View allAll Photos Tagged extinct
_0329, 2007-11-07, 09:09 , 8C, 4040x5368 (1368+1403), 100%, 412E BetterLig, 1/80 s, R57.4, G44.8, B55.6
Superdomain: Neomura
Domain: Eukaryota
(unranked): Opisthokonta
(unranked) Holozoa
(unranked) Filozoa
Kingdom: Animalia
Subkingdom: Eumetazoa
(unranked): Bilateria
(unranked): Protostomia
Superphylum: Lophotrochozoa
Phylum: Mollusca
Subphylum: Conchifera
Class: Cephalopoda
Subclass: †Orthoceratoidea
Order: †Orthocerida
Family: †Proteoceratidae
Genus: †Treptoceras
Species: †T. cincinnatiensis
New Zealand Quail, or koreke, bzw neuseeländische Schwarzbrustwachtel.
Until 1860 was this Quail species, endemic to New Zealand, quite common on both islands. 1869 it could only be recorded from 2 localities, around 1875 this species was extinct. Probably the introduction of predators, or an avian disease trasmitted by introduced pheasants contributed to the eradication of this bird species. Stuffed specimen photgraphed at the MNHN in Paris
'Endangered and Extinct' by creative recycling artist Val Hunt, an exhibition at Gloucester Cathedral, Saturday 26 September-Sunday 1 November 2020 in the Cloisters
From the Cathedral's website:
"This exhibition presents a subtle message about recycling and preservation, raising awareness of why the creatures on show are endangered or extinct...
Having worked for the past 29 years as a professional maker, Val Hunt continues to be amazed at the versatility of creative recycling. There is an enormous variety of discarded material just waiting to be reconstructed and given a new identity, especially Val's favourite material of drinks can metal. Intricate constructions and interesting textures are key elements found in her work, humour is also an added ingredient whenever possible.
Through experimentation, ingenuity and skill her work is always changing as she discovers new techniques and ways of constructing recycled materials to signal a new meaning. Her works recycles a diverse selection of throwaway material, from these she creates a fascinating selection of large and small sculptural pieces which are both appealing and informative.
Despite her use of manufactured materials, her main inspiration comes from the natural world. Val has a special interest in endangered and extinct species and most of her work reflects this. She makes animals, exotic birds, dinosaurs, insects and species of flora all on the edge or now extinct.
The increasing awareness of the effects of pollution, climate change, plastic in the Ocean and environment destruction on the habitat have influenced Val's work. She now dedicates her making to highlighting the plight of species that are on the edge or gone forever in her touring educational exhibition 'Endangered and Extinct'...
Val's work has been shown in exhibitions around the UK, Denmark, Japan, United Emirates, USA and toured overseas with the British Council. She has work in many permanent collections."
Extinct fungus-growing ant, related to modern leafcutting ants, fossilized in Dominican Amber.
20,000,000 years old
Public Domain image by Christopher Johnson
Part of the “Insects Unlocked” Project
University of Texas at Austin
The ... Ngorongoro Crater ... extinct volcanic caldera in the Eastern (Great) Rift Valley, northern Tanzania. It lies 75 miles (120 km) west of the town of Arusha. The caldera measures between 10 and 12 miles (16 and 19 km) across and has an area of 102 square miles (264 square km). Its heavily forested rim rises 2,000 feet (610 metres) above the caldera’s floor to an elevation of 7,500 feet (2,286 metres). Ngorongoro is thought to have formed about 2.5 million years ago from a large active volcano whose cone collapsed inward after a major eruption, leaving the present vast, unbroken caldera as its chief remnant.
source: Encyclopaedia Britannica
Aside from herds of zebra, gazelle, and wildebeest, the crater is home to the "big five" of rhinoceros, lion, leopard, elephant, and buffalo. The crater plays host to almost every individual species of wildlife in East Africa, with an estimated 25,000 animals within the crater.
source: Wikipedia, which includes a great panoramic photograph of the crater
if you have time, watch the slideshow of our safari
Placenticeras sp. - fragment of a fossil ammonite with ammolite from the Cretaceous of Canada. (5.5 centimeters across at its widest)
Ammolite is biogenic gem material from Alberta, Canada. It has stunningly intense, iridescent rainbow colors. Ammolite is fossil shell material from Placenticeras ammonites. Ammonites are an extinct group of swimming squid-like organisms with planispirally coiled shells (the chambered nautilus in modern oceans is a distant relative of ammonites, but has a similar body plan). Ammonite shells were originally nacreous aragonite (“mother of pearl”) (CaCO3). Geologic studies have shown that ammolite gem material formed from slight diagenetic alteration of the original ammonite's nacreous aragonite shell. Diagenesis has significantly intensified and brightened the play of colors.
Ammolite is mined, polished, and treated by resin- or epoxy-impregnation to stabilize it. Very rarely, complete specimens of Placenticeras ammonite shells preserved in ammolite are recovered - such specimens are exceedingly valuable (for example, see figure 2 of Mychaluk et al., 2001).
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Ammonite info. from the Wyoming Geological Museum in Laramie, Wyoming:
Ammonites
Ammonites are extinct molluscs of the Class Cephalopoda, a group represented today by the octopus, squid, and shell-bearing Nautilus. Ammonites appeared midway through the Paleozoic Era (400 million years ago). They diversified many times over their 300 million year history, and persited through three mass-extinction events. During the Mesozoic Era (from 250 to 65 million years ago), ammonites reached their greatest diversity, achieving many different shell forms and ways of life. At the end of the Mesozoic Era, ammonites became extinct, together with the dinosaurs, pterosaurs, and marine reptiles.
Ammonite Anatomy
Ammonites, like the modern Nautilus, possessed an external shell divided into a series of chambers by thin walls called septa. These chambers were connected by a flesh-bearing tube known as the siphuncle. By analogy with the living Nautilus, it served to regulate fluid and gas levels in each chamber, enabling ammonites to control their buoyancy. Although ammonites are common fossils, little is known about their soft parts. However, it is thought that their soft anatomy was similar to that of modern squid and octopi. They probably possessed eight to ten arms surrounding a beak-like mouth. Locomotion probably involved bringing water into a cavity, formed by the fleshy mantle, then expelling it by muscular contraction through a funnel-like opening called the hyponome, therby implementing a form of jet-propulsion.
Ammonite Ecology
Ammonites were common constituents of Cretaceous marine ecosystems and were represented in many habitats in the shallow seas that covered North America during the Mesozoic Era. Ammonites lived in both nearhsore and offshore settings in both benthic (seafloor) and pelagic (open ocean) habitats. Some species could probably even migrate between both types of habitats.
Feeding Habits
Most ammonites, like their modern cephalopod relatives, were probably carnivores, although some may have been passive planktivores. The carnivorous ammonites possesssed powerful jaws adapted for crushing prey, which included crustaceans, fish, clams, snails, and even other ammonites.
Reproduction and Growth
Ammonites, like their modern relatives the octopi and squids, hatched as tiny larvae in huge numbers and probably grew to maturity within a short span of time. Most adults were small, while those of some species were huge, reaching sizes greater than 6 feet (2 meters) in diameter. Aberrant ammonites that changed their shape during growth are thought to have changed their habitat as well.
Ammonite Sexes
Like modern cephalopods, ammonites showed distinct differences between sexes. Shells of female ammonites, known as macroconchs, are larger and possess little or no ornamentation. Males, known as microconchs, are smaller than females and commonly possess distinct ornamentation.
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Name & classification: Placenticeras meeki or Placenticeras intercalare (Animalia, Mollusca, Cephalopoda, Ammonoidea, Ammonitina)
Stratigraphy: Bearpaw Formation, Campanian Stage, upper Upper Cretaceous, ~70-75 Ma
Locality: mine in the St. Mary River Valley west or northwest of Welling and south-southwest of Lethbridge, southern Alberta, southwestern Canada
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Reference cited:
Mychaluk, K.A., A.A. Levinson & R.L. Hall. 2001. Ammolite: iridescent fossilized ammonite from southern Alberta, Canada. Gems & Gemology 37(1): 4-25.
Superdomain: Neomura
Domain: Eukaryota
(unranked): Unikonta
(unranked): Obazoa
(unranked): Opisthokonta
(unranked) Holozoa
(unranked) Filozoa
Kingdom: Animalia
Subkingdom: Eumetazoa
Clade: ParaHoxozoa
Clade: Bilateria
Clade: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Clade: Olfactores
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Clade: Eugnathostomata
Class: Chondrichthyes
Subclass: Elasmobranchii
Infraclass: Euselachii
Superorder: Galeomorphii
Order: Lamniformes
Family: Cetorhinidae
Genus: †Keasius
Species: †K. septemtrionalis
Giraffe. Mkhaya Game Reserve. Swaziland/Eswatini. Sep/2019
The giraffe (Giraffa) is a genus of African even-toed ungulate mammals, the tallest living terrestrial animals and the largest ruminants. The genus currently consists of one species, Giraffa camelopardalis, the type species. Seven other species are extinct, prehistoric species known from fossils. Taxonomic classifications of one to eight extant giraffe species have been described, based upon research into the mitochondrial and nuclear DNA, as well as morphological measurements of Giraffa, but the IUCN currently recognises only one species with nine subspecies.
The giraffe's chief distinguishing characteristics are its extremely long neck and legs, its horn-like ossicones, and its distinctive coat patterns. It is classified under the family Giraffidae, along with its closest extant relative, the okapi. Its scattered range extends from Chad in the north to South Africa in the south, and from Niger in the west to Somalia in the east. Giraffes usually inhabit savannahs and woodlands. Their food source is leaves, fruits and flowers of woody plants, primarily acacia species, which they browse at heights most other herbivores cannot reach. They may be preyed on by lions, leopards, spotted hyenas and African wild dogs.
Source: Wikipedia
Mkhaya Game Reserve is a protected area in Swaziland/Eswatini. It is located along the MR8 road.
It is situated in lowveld wilderness in the southeast of Swaziland/Eswatini and is made up of acacia-dominated thornveld in the south and broadleaf sandveld in the north. The reserve has many dry riverbeds, is dotted with waterholes and has a network of game-viewing roads.
Mkhaya Game Reserve is named after the knobthorn tree which is known as mkhaya in siSwati.
Mkhaya is staffed and patrolled entirely by local Swazi people. All travel within the reserve is guided and requires pre-booking. The reserve is self-financed solely through visitor revenues.
It was established in 1979 to save Nguni cattle, which were close to extinction, and has gone on to include other endangered species such as the black and white rhinos, hippopotamus pods, roan antelope, sable antelope, tsessebe, elephant and Cape buffalo herds.
Source: Wikipedia
The Stone Camp is situated in the heart of the reserve in a riverine forest alongside a dry river bed. The 12 semi-open thatched, stone cottages have half walls - no windows, no doors! In the family units all beds are in 1 open-plan room.
Source: Mkhya Game Reserve website
A girafa é um gênero de mamíferos ungulados africanos, sendo os animais terrestres mais altos e os maiores ruminantes. O gênero atualmente consiste de uma espécie, Giraffa camelopardalis, a espécie-tipo. Sete outras espécies são espécies pré-históricas conhecidas de fósseis. Classificações taxonômicas de uma a oito espécies existentes de girafas foram descritas, baseadas em pesquisas com DNA nuclear e mitocondrial, bem como em medidas morfológicas de Giraffa, mas atualmente a IUCN reconhece apenas uma espécie com nove subespécies.
As principais características distintivas da girafa são seu pescoço e pernas extremamente longos, seus ossólones semelhantes a chifres e seus distintos padrões de pelagem. É classificada sob a família Giraffidae, junto com seu parente mais próximo, o okapi. Seu alcance disperso estende-se do Chade, no norte, até a África do Sul, no sul, e do Níger, no oeste, até a Somália, no leste. Girafas geralmente habitam savanas e bosques. Sua fonte de alimento são folhas, frutos e flores de plantas lenhosas, principalmente espécies de acácia. Eles podem ser predados por leões, leopardos, hienas dentre outros.
Fonte: Wikipedia
Mkhaya Game Reserve é uma área protegida na Suazilândia / Eswatini. Está localizado ao longo da estrada MR8. Ele está situado no deserto de planície no sudeste da Suazilândia / Eswatini e é composto por espinhos dominados pela acácia no sul e por areia ao norte. A reserva tem muitos leitos secos, é pontilhada de poços de água e possui uma rede de estradas para observação de animais. Mkhaya Game Reserve é nomeado por conta da árvore de knobthorn, que é conhecida como mkhaya em siSwati. Mkhaya é composta por pessoal e patrulhada inteiramente pelo povo suazi local. Todas as viagens dentro da reserva são guiadas e requerem pré-reserva. A reserva é autofinanciada somente através da receita de visitantes. Foi criada em 1979 para salvar o gado Nguni, que estava próximo da extinção, e passou a incluir outras espécies ameaçadas, como rinocerontes, hipopótamo, antílopes, elefantes e búfalos.
Fonte: Wikipedia (tradução livre)
O Stone Camp está situado no coração da reserva, em uma floresta ribeirinha ao lado de um leito de rio seco. Os 12 chalés de pedra semi-abertos têm meias paredes - sem janelas, sem portas! Nas unidades familiares, todas as camas estão em um quarto em plano aberto.
Fonte: Mkhya Game Reserve website (Tradução livre)
This Moa (bird) once roamed our country but became extinct about 500 years ago.
#16 strange 52in2018challenge
CABALLO FÓSIL SUDAMERICANO ~~~~~~~~~~~~~
Cavalo fóssil sulamericano - - - - - - - - - - - - - - - - - - -
Skull of Southamerican extinct Horse ............................
Equus († Amerhippus) neogeus Lund, 1840
Orden: Perissodactyla (Perisodáctilos) ... Familia: Equidae (Équidos = Equinos)
Ejemplar que vivió en la formación Pampeana del pleistoceno de la
provincia de Buenos Aires, ARGENTINA.
Esta especie evolucionó en el sur de sudamérica, de equinos que formaron parte del último grupo de mamíferos invasores que ingresaron a la América del Sur, como consecuencia del levantamiento del istmo de Panamá, que generó la conexión entre ambas Américas a través de este "puente panameño", acontecimiento ocurrido aproximadamente unos 3 millones de años antes del presente, y que unió definitivamente las faunas de América del Norte con las del Sur.
La especie de la que esta evolucionó ingresa al subcontinente en una etapa posterior a la primera oleada de equinos, de la cual se originó el género Hippidion.
Otra rama migra desde Norteamérica rumbo a Eurasia, de la cual más tarde descenderá el Caballo doméstico.
A diferencia de Hippidion, Equus migra al neotrópico y al viejo mundo, ya diferenciado como género aparte, hecho acaecido en América del Norte, en el Plioceno.
A las distintas especies fósiles del género Equus halladas en América se las ha agrupado en el subgénero Amerhippus.
Este subgénero se caracteriza por contar con una mandíbula robusta, miembros monodáctilos relativamente cortos y macizos, cráneo con cresta supraoccipital ancha, y una flexión craneal acusada.
Los dientes superiores muestran protocono triangular y más largo en el extremo distal que en el sector mesial, y con plegamiento interno en algunos casos.
Las fosetas anteriores y posteriores no están muy desarrolladas.
A diferencia de Hippidium, eran caballos bastante grandes.
Un gran número de sus restos se hallaron en sitios arqueológicos, y se corroboró su utilización como fuente de alimento, aunque este caballo primitivo no llegó a ser domesticado por los aborígenes.
Los aborígenes amerindios convivieron con los équidos durante más 4.000 años, cazándolos tan intensamente que las especies no soportaron semejante presión de captura y terminaron por extinguirse.
Fueron abundantes, especialmente en las pampas y otros lugares abiertos.
Este subgénero fue colectado en sudamérica desde el norte de Colombia hasta el sur de la provincia de Buenos Aires y el norte de la patagonia.
La primera aparición del género en el registro fósil corresponde probablemente a la edad Mamífero Ensenadense de Tarija Bolivia (Pleistoceno temprano), y se extiende hasta el Lujanense tardío de Buenos Aires.
Dentro de él se han descripto varias especies bien definidas, con clara diferenciación geográfica y adaptativa.
En América del Sur: el género Equus estubo representado por cinco especies:
--- Equus (Amerhippus) andium Branco, 1883, ex A. Wagner, 1860
Era más pequeño, y estaba restringido al corredor interandino en los Andes ecuatorianos durante el Pleistoceno tardío, formación Cancagua; y posiblemente también en la sabana colombiana.
--- Equus (Amerhippus) santaelenae (Spillman, 1938)
Era mayor que el anterior, y se lo encontraba en las llanuras costeras de la península de Santa Elena, Ecuador, durante el Pleistoceno tardío, formación Pichilingue.
--- Equus (Amerhippus) insulatus C. Ameghino, 1904
Esta especie mediana vivió en la actual zona boliviana de Tarija durante el Pleistoceno Medio; posiblemente también en el Río Chiche del altiplano ecuatoriano (según restos encontrados); y en el extremo norte argentino.
--- Equus (Amerhippus) lasallei,
restringido a la sabana de Bogotá, Colombia, durante el Pleistoceno Tardío.
--- Equus (Amerhippus) neogeus Lund, 1840
El cual fue reportado en varias localidades paleontológicas de la región pampeana argentina, en Buenos Aires (Sierras Bayas, Río Luján, Paso Otero, Río Quequén Salado, Arroyo Camet, Arroyo Seco, Tapalqué, Lobería, Bahía Blanca, etc.), Córdoba; en el Uruguay, y en el sudeste del Brasil, durante el Pleistoceno Tardío.
En las proximidades de las Sierras Bayas de Olavarría, se hallaron fósiles de esta especie con una antigüedad de los estratos portadores de una edad de 120 mil años (Formación Esperanza).
Esta última especie es la que ha logrado sobrevivir por más tiempo durante la invasión paleoindia al subcontinente.
En Argentina, sólo ha sido hallado Equus (Amerhippus) neogeus, que es la especie de mayor tamaño y gracilidad del género y la más parecida al caballo criollo local, aunque con teórica progenie europea...
Su cráneo es grande, y presenta la región preorbital y nasal ensanchadas.
Su distribución estratigráfica está restringida al Lujanense.
Las edades geológicas Ensenadense y Lujanense, junto a la Bonaerense, corresponden a las 3 etapas de la época del Pleistoceno, de la siguiente manera:
1.Pleistoceno Inferior (Ensenadense): 1.8 millones de años a 500 mil años A.P
2.Pleistoceno Medio (Bonaerense): 500 mil años - 130 mil años A.P.
3.Pleistoceno Superior (Lujanense): 130 mil años - 10 mil años A.P.
A.P.: Antes del Presente
Fósiles recientemente encontrados en la zona del Bajo del Tala, cercana a la ciudad bonaerense de San Pedro tienen 500 mil años, lo cual indicaría que no sería la única especie de Equus que habitó en la Argentina, sino que habría existido una especie predecesora que llegó antes de lo que se pensaba, y que podría corresponder con alguna de las otras que habitaron Sudamérica, o una especie aún no descripta todavía.
SINONIMIA:
Amerhippus neogaeus , Equus (Amerhippus) neogaeus , Equus neogaeus , Equus neogeus , Amerhippus neogeus , Hippidion neogaeus , Hippidion neogeus , Equus rectidens , Equus curvidens ,
( 1 de febrero de 2010 )
Museo de Ciencias Naturales Bernardino Rivadavia,
ciudad de Buenos Aires, ARGENTINA.
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fotografía fotografías foto fotos photo photos imaje imajes imágenes imagen imajenes imajen picture pictures , Fauna de Argentina , Fauna de la Argentina , Fauna argentina , Mamíferos de Argentina , Mamíferos de la Argentina , Mamíferos argentinos , Animales argentinos , Animales de Argentina , Animales de la Argentina , Mammals of Argentina , Argentina's mammals , Argentine mammals , Argentinian mammals , Argentine mammalians , Argentina´s animals , Argentine animals , Argentinian animals , Animals of Argentina , Pleistocene megafauna , Mammals of Pleistocene , Pleistocene mammals , Pleistocene mammalians , Pleistocene extinctions , Mamíferos del Pleistoceno , Mamíferos do Pleistoceno , Prehistoric mammals of South America , Animais pré-históricos , Extinct mammals , Extinct animals , Mammifère préhistorique , pampas sud-américaines , Prehistoric mammals of South America , Prehistoric mammals of Argentina , Argentina´s Prehistoric mammals , Argentinian , Argentine Prehistoric mammals , Animales extinguidos de Argentina , Animales extinguidos de la Argentina , Mamíferos extintos de Argentina , Especies extintas en la prehistoria , Quaternary Extinctions , Prehistoric sloths , Zahnarme , Ausgestorbenes Säugetier , Pelosi , Fósseis do Brasil , Fósseis brasileiros , Mammiferi fossili , Mammifère préhistorique , Luiaarden en miereneters , Uitgestorven zoogdier , Pleistoceen , Megafauna estinta , Cavalo Cavalos , Equini , Equidi , konji , lihoprsti kopitarji , 奇蹄目 , 马科 , കുടുംബം ,നിര, 奇蹄目 , ウマ科, Onevenhoevigen , Paardachtigen , Uddatåiga hovdjur , Hästdjur , Tek toynaklılar , Uparrettåede hovdyr , hestefamilien , Atgiller , Unpaarhufer , Perissodactylaren , Pferde , Koňovité , Nepárnokopytníky , Neporakanopiai , Arkliniai , Heste , équidé , équidés , Caballos de Argentina , Argentina´s horses , horses of Argentina , Argentinian Horses , Argentine Horses , Razas de Equinos , argentinischer , Animales argentinos , Animales de Argentina , Animales de la Argentina , Argentina´s animals , Argentine animals , Argentinian animals , Animals of Argentina , Horse breed , List of horse breeds , Horse breeding , Razas equinas , Razas de caballos , Raças de cavalo , Pferderasse , Razze equine , Race chevaline , Arklių veislių sąrašas , över hästraser , paardenrassen , hynsterassen , lófajták , Породи коне , Luettelo hevosroduista , Seznam plemen koní , 馬の品種の一覧 , 馬品種 , Subgenus Equus , Equus andium , Equus insulatus , Equus santaeelenae , Equus neogeus , Equus lasallei , subg. Amerhippus , , Prehistoric horses , Prehistoric mammals of South America , Argentine Pleistocene mammals , Pleistocene extinctions" "Megafauna of South America , Pampas Pleistocene Horses ,
Teeth and skull fragment of a tiny eomyid, about 25 million years old. The dawn mouse family, Eomyidae, is an extinct group that was once very diverse in North America. Apeomys is well known from Eurasia, this is the first record of this animal from North America. This suggests that this tiny mouse crossed the Bering Land Bridge sometime in the Oligocene.
Photo credit: John Day Fossil Bed National Monument
Ten New Prehistoric Rodent Species Discovered in Oregon’s John Day Basin
Kimberly, Ore. – Paleontologists are pleased to announce the discovery of 10 new prehistoric rodent species found at the National Park Service (NPS) John Day Fossil Beds National Monument and nearby public land administered by the Bureau of Land Management (BLM).
As reported in the current issue of the Annals of Carnegie Museum, Dr. Joshua Samuels (John Day Fossil Beds National Monument) and Dr. William Korth (Carnegie Museum of Natural History, Rochester
Institute of Vertebrate Paleontology) examined newly discovered and previously undocumented fossil specimens from the John Day Formation. Their study describes 21 species of rodents in all. The new species include: an early beaver, Microtheriomys brevirhinus, which may be the distant ancestor of living beavers; a dwarf tree squirrel, Miosciurus covensis, smaller than any living in North America today; a primitive pocket mouse, Bursagnathus aterosseus, a possible ancestor of these abundant desert rodents; and a birch mouse, Plesiosminthus fremdi, named for retired John Day Fossil Beds paleontologist Ted Fremd.
“This study fills some substantial gaps in our knowledge of past faunas, specifically smaller mammals. Some of the new species are really interesting in their own right, and will ultimately help improve our understanding of the evolution of beavers and pocket mice,” said Dr. Joshua Samuels. “These finds show that despite this area being studied for well over 100 years, new discoveries continue to be made. Each new discovery helps to give us a fuller picture of Oregon's past.”
This study allows better reconstruction of Oregon’s past ecosystems and improves understanding of how faunas in the region have changed through time. Some of the new rodents are closely related to species from the fossil record of Asia, and help document the dispersal of species across the Bering Land Bridge in the Oligocene. Several of the new species, like the beaver Microtheriomys and pocket mouse Bursagnathus, will help inform studies of how living rodents have evolved.
Oregon’s John Day Basin contains one of the most complete and well-known fossil records on Earth, with nearly 50 million years of time preserved. These fossil beds record the history of ancient ecosystems,
changing climate, and plant and animal evolution during the ‘Age of Mammals.’ For 150 years,
paleontologists have been visiting the area to collect fossils and study geology. As a result of this research, the John Day Formation boasts an incredibly diverse fauna with over 100 recognized species of mammals, including sabertoothed nimravids, early dogs, three-toed horses, and giant ‘hell pigs.’ These new rodents were collected through decades of collaborative work throughout the John Day Basin
by paleontologists from John Day Fossil Beds National Monument, the BLM in Oregon, the University of California - Berkeley, and the University of Washington. While the John Day Fossil Beds National Monument includes many of the important and best studied sites, the majority of fossil localities in the region were found on BLM-managed public lands.
"The National Park Service and BLM have worked together to manage fossil resources in Oregon under an agreement for nearly 30 years," said Shelley Hall, John Day Fossil Beds National Monument Superintendent. "The collaboration between federal agencies has allowed each agency to fulfill their mission of preserving resources for future generations while facilitating important scientific research."
The new study can be found in the current issue of the Annals of Carnegie Museum: www.carnegiemnh.org/science/default.aspx?id=9998
A PDF version of the article can be downloaded from John Day Fossil Beds National Monument at: www.nps.gov/joda/learn/news
Additional information about John Day Fossil Beds National Monument is available online at: www.nps.gov/joda
Additional information about the BLM’s paleontology program is available online at www.blm.gov/or/resources/heritage
yes, a BRONTOSAUR! and he's extincting. yes.
if you are interested, and you should be, trin did an excellent job documenting the process of drawing this beeste.
For Bokeh Thursday: Transition - well, extinction is a pretty big transition!
ODC2: Apotheosis. All hail the wondrous and mighty dodo!
blog post here: n-e-r-v-o-u-s.com/blog/?p=2242
at the American Museum of Natural History Wing of Mammals and their Extinct Relatives
Extinct since 1933. I remember writing a small project about these at school when I was about ten and their story has fascinated me ever since. If you're interested, there's more information here: users.aristotle.net/~swarmack/index.html and here www.naturalworlds.org/thylacine/. There's also currently one other Flickr photo at: www.flickr.com/photos/mlhs/538156/
T. xanion
The moa-nalo were a group of aberrant, goose-like ducks that lived on the larger Hawaiian Islands, except for the island of Hawai'i itself, in the north-eastern Central Pacific. They were the major herbivores on most of these oceanic land masses for the last 3 million years or so, until they became extinct after human settlement - about 1000 AD.
Unknown to science until the early 1980s, when their subfossil remains were discovered in sand dunes on the islands of Moloka'i and Kaua'i. Subsequently bones were found on Maui, O'ahu, and Lana'i, in lava tubes, lake beds and sinkholes.
They represent four species in three genera so far: Chelychelynechen quassus from Kaua'i, | Ptaiochen pau from Maui, | Thambetochen xanion from O'ahu, | Thambetochen chauliodous from Maui, Lana'i and Moloka'i (Maui Nui).
Chelychelynechen, meaning turtle-jawed goose, had a large heavy bill like that of a tortoise, while the other two genera, Thambetochen and Ptaiochen all had serrations in their bills known as pseudoteeth, similar to those of mergansers. Ferns (possibly Asplenium nidus and / or Dryopteris wallichiana) and likely various Hawaiian lobelioids being a primary diet.
- All species were flightless.
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