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Dinictis felina was an extinct carnivore that roamed the North American plains during the Late Eocene to Early Oligocene, approximately 40 to 35 million years ago. It belonged to the genus Dinictis, one of the earliest and most basal members of the Nimravidae family—commonly referred to as “false saber-toothed cats.” Although it resembled modern felines in some aspects, Dinictis was part of a separate evolutionary lineage within Carnivora and lacked many of the advanced adaptations seen in later saber-toothed predators.
Cougar-sized and built for stealth, it had a flat-footed (plantigrade) stance, relatively short and powerful limbs, and a long tail for balance. Its saber-like canines were elongated but modest compared to those of later nimravids or true machairodontine cats, indicating an early stage in the evolution of saber-toothed predation.
Scientific classification:
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Carnivora
Suborder: Feliformia
Family: †Nimravidae
Subfamily: †Nimravinae
Genus: †Dinictis
Species: †Dinictis felina (Leidy, 1854)
Taxonomic notes:
Although various species were once attributed to the genus Dinictis, a 2016 taxonomic revision determined that the genus is monotypic, containing only the species †Dinictis felina. It was originally named by Joseph Leidy and later placed in Nimravidae by Cope (1880), and in the subfamily Nimravinae by Flynn and Galiano (1982), Bryant (1991), and Martin (1998).
The skull of Dinictis felina displays transitional features: slightly elongated upper canines, a moderately shortened snout, and pronounced zygomatic arches—suggesting strong jaw musculature. Unlike true cats (which are digitigrade), Dinictis was plantigrade, walking on the soles of its feet, a trait it shared with early carnivores. This posture, along with its muscular build, implies a lifestyle based more on stalking and ambush than on long pursuits.
This cast comes from a rare fossil specimen unearthed in South Dakota’s Brule Formation, a rich Oligocene-aged deposit. The replica faithfully captures the defining traits of Dinictis: its moderately sabered canines, deep-set eye orbits, and powerful jawline—offering a window into the early evolutionary stages of saber-toothed predation in North America.
April 11, 1997.
Comet Hale-Bopp Above a T-Rex like tree formation.
Film: Fuji Provia 1600 ASA
Camera: PENTAX-LX mounted on Celestron 8 inch.Telescope,
Lens: smc Pentax-M 200 mm
Exposure: Around 15 min. f/11, using the telescope's planetary tracking mode.
Both the double Blue Ion tail & the White dust tail can be seen !
Hoplophoneus primaevus was an extinct carnivore that lived in North America during the Early Oligocene, approximately 34 to 30.5 million years ago. It belonged to the genus Hoplophoneus, which ranged more broadly from the Late Eocene to Early Oligocene (~37 to 30 million years ago), and was part of the Nimravidae family—often referred to as “false saber-toothed cats.” Despite their feline-like appearance, nimravids formed a separate evolutionary branch within Carnivora. The name Hoplophoneus comes from the Greek words for "weapon" (hoplo) and "murder" (phonos)—a fitting name for an apex predator equipped with elongated saber-like canines.
Scientific classification:
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Carnivora
Suborder: Feliformia
Family: †Nimravidae
Subfamily: †Nimravinae
Genus: †Hoplophoneus
Key species within the genus Hoplophoneus:
Type species:
†Hoplophoneus primaevus (described by Cope in 1874).
Other species:
†Hoplophoneus occidentalis – larger size, with more robust canines.
†Hoplophoneus mentalis – more ancient form, present in the Late Eocene.
†Hoplophoneus dakotensis – characterized by a more elongated skull.
†Hoplophoneus oreodontis – likely specialized in preying on oreodonts.
The skull of H. primaevus presents many of the hallmarks of the genus: prominent upper canines, flanged lower jaws to protect those teeth when the mouth was closed, deep zygomatic arches for strong bite musculature, and a shortened snout. Its limb proportions—short and sturdy—suggest it was an ambush predator, capable of short bursts of speed but not extended chases. Like other nimravids, it likely hunted from cover, quickly overpowering prey with a powerful, slashing bite.
This cast was produced from a remarkably complete original specimen, with only 15% restoration and a unique, naturally occurring coloration. The replica faithfully preserves the most iconic features of Hoplophoneus—its extended saber canines, recessed eye sockets, and muscular jaw contours—capturing the lethal elegance of one of the most specialized predators of its time.
When going for the first time to the volcano, I found myself with a wide fringe of land and pasture, accompanied by cliffs that go directly into the sea. The panorama may not be attractive at first sight, but there are many interesting places and loads of history that are worth knowing.
La cresta del Poike:
On the north side of the volcano there are three mounds created by the accumulation of lava that formed a very curious and showy landscape.
These three small mountains Ma'unga Parehe (broken mountain), Ma'unga Tea Tea (white hill) and Ma'unga Go to Heva (magic water hill), are an important source of Trachyte, a volcanic stone with which it built some moons (only some of which is found in Toba Tapilli, a volcanic rock much more moldable and which was used as the main material to build the giant rocks).
On top of these three mountains I also found some remains of Ahu (ceremonial platforms), from where some hubo moais.
I will climb it later.
I need to get into the sea first.
Beaches, food and beer, first!
Nikon F5, Nikkor 24mm f2.8, Kodak Tmax 100.
I imagine some cute old lady going into town in the 1930's proudly riding in the vehicle these wheels once graced. I imagine both are extinct now.
Skin - cStar Limited - Lilith Skin - Ivory
Shape - cStar Limited Mamba (Modified)
Eyes - cStar Limited - Unique Eyes - Blind Spectrum
Vertebrae - *SoliDea FoliEs* Extinct
Jewelry - :: PM :: Mariah Earring (The Runway Perfect Hunt)
Hands bones bracelet with claws - Vika Design
Pose by Clem Velinov
Scientists are baffled to explain how the remains of an Automosaurus Toyotus (although the exact species is difficult to determine because of deterioration due to sea water) long thought to be extinct washed up on a beach along the Oregon coast. A typical Automosaurus is thought to have weighted from 4.000 lbs (about 1800 kg) to 9,000 pounds (about 3600kg), voraciously consumed more than 50 gallons (190 liters) of petroleum in seven days, and emitted on average about 4.6 metric tons of CO 2 per year.
This writer shudders to think how close we came to the end of not just humankind, but all life on Earth had it not been for sudden growth of feral bicycles, which hunted and drove the automosaurus to extinction. Or so we thought.
Scientists now wonder if the creatures have gathered beneath the seas where they have evolved into something perhaps even more deadly.
More about these interesting animals here:
www.sciencedirect.com/science/article/pii/S09666923240002...
This animal is extinct in the wild but not at the Bronx Zoo! Just 1 of the many great things about zoos in general and the Bronx Zoo in particular.
First identified from dinosaur-age fossils and was thought to be extinct. The dawn redwood, Metasequoia glyptostroboides.
Then, in 1941, a living specimen was discovered during a survey of Sichuan and Hubei provinces, China. Seeds were later collected and raised in arboreta worldwide. Young trees are now readily available. It exists in the wild as only a few scattered stands in China where it is has protected status.
This old and tall tree at Sandringham may well have grown from one of the original seeds brought from China.
The dawn redwood is one of the few deciduous conifers.
Face Tattoo: "Perception" - Nefekalum Tattoos from last month's round of WLRP, now available at the Mainstore
Body: "Assimilate" - Nefekalum Tattoos Coming soon to Mainframe 07.20.20 - 08.13.20 for $199.(Comes with Face applier not featured here.)
Hair: "Yasmin" - Exile Mainstore
(Pictured wearing V-Tech's Boi Chest Mod for Maitreya.)
An almost extinct California wildflower. Here at the UC Botanical Garden. The Garden is working w/ others to plant test plots, monitor, preserve.
Corvo Island, Azores, Portugal
On the small island of Corvo, the extinct volcanic mountain is crowned with a large subsidence crater, named locally as “Caldeirão” (The Cauldron). With a perimeter of 3,7 km and 300 meters deep the cauldron lodges inside a lake of irregular shapes where the imagination and the will of the locals, after dispelled the mists, recognizes a replica of seven of the nine islands of the Azorean archipelago in the shapes of the cones of the peatlands. The “Caldeirão” is so immensely beautiful that looks bigger than the island itself and, in fact, it almost like that because, behind the northern ridge, a monumental cliff plunges abruptly to the Atlantic ocean.
Ilha do Corvo, Açores, Portugal
Na pequena ilha do Corvo, a montanha vulcânica extinta é coroada com uma ampla cratera de abatimento, denominada localmente por Caldeirão. Com 3,7 km de perímetro e 300 metros de profundidade o Caldeirão aloja no seu interior uma lagoa de formas irregulares onde a imaginação e a vontade dos locais, depois de dissipadas as neblinas, permite reconhecer uma réplica de sete das nove ilhas dos Açores nas formas dos cones das turfeiras. O Caldeirão é tão imensamente belo que parece não caber na ilha e na verdade quase assim acontece já que, por trás da cumeeira norte, uma monumental falésia precipita-se abruptamente para o Oceano Atlântico.
At one time we got no less than three local newspapers delivered free to our door. Now there are none. This was one of the last issues of the Lichfield Mercury which ceased printing paper copies last year after 205 years of publication. I don't think I've read an actual paper newspaper since.
We're Here: Reading the paper
80/365
In a tribute to the Tasmanian Tiger (Thylacine), now sadly an extinct species, this sculpture presents them in a playful mood. The Thylacine was the largest marsupial wolf and the last one in captivity died 1936.
There are people who claim to have made sightings in wilderness areas, but these claims are very rare and it is highly unlikely the species has survived. news.mongabay.com/2021/02/study-suggests-tasmanian-tiger-...
Megalodon (Otodus megalodon), meaning "big tooth", is an extinct species of mackerel shark that lived approximately 23 to 3.6 million years ago (Mya), from the Early Miocene to the Pliocene epochs. It was formerly thought to be a member of the family Lamnidae and a close relative of the great white shark (Carcharodon carcharias). However, it is now classified into the extinct family Otodontidae, which diverged from the great white shark during the Early Cretaceous. While regarded as one of the largest and most powerful predators to have ever lived, the megalodon is only known from fragmentary remains, and its appearance and maximum size are uncertain. Scientists differ on whether it would have more closely resembled a stockier version of the great white shark, the whale shark (Rhincodon typus), the basking shark (Cetorhinus maximus) or the sand tiger shark (Carcharias taurus).
Scientific classification:
Domain:Eukaryota
Kingdom:Animalia
Phylum:Chordata
Class:Chondrichthyes
Subclass:Elasmobranchii
Subdivision:Selachimorpha
Order:Lamniformes
Family:Otodontidae
Genus:Otodus
Species:O. megalodon
The most recent estimate with the least error range suggests a maximum length estimate up to 20 m, although the modal lengths are estimated at 10.5 m. Estimates suggest that a megalodon about 16 m long weighs up to 48 MT, 17 m long weighs up to 59 MT, and 20.3 m long (the maximum length) weighs up to 103 MT. Their teeth were thick and robust, built for grabbing prey and breaking bone, and their large jaws could exert a bite force of up to 108,500 to. Megalodon probably had a major impact on the structure of marine communities. The fossil record indicates that it had a cosmopolitan distribution. It probably targeted large prey, such as whales, seals and sea turtles. Juveniles inhabited warm coastal waters and fed on fish and small whales. Unlike the great white, which attacks prey from the soft underside, megalodon probably used its strong jaws to break through the chest cavity and puncture the heart and lungs of its prey. The animal faced competition from whale-eating cetaceans, such as Livyatan and other macroraptorial sperm whales and possibly smaller ancestral killer whales. As the shark preferred warmer waters, it is thought that oceanic cooling associated with the onset of the ice ages, coupled with the lowering of sea levels and resulting loss of suitable nursery areas, may have also contributed to its decline. A reduction in the diversity of baleen whales and a shift in their distribution toward polar regions may have reduced megalodon's primary food source. The shark's extinction coincides with a gigantism trend in baleen whales.
Megalodon teeth are similar in shape but larger and broader than the teeth of the modern great white shark. Teeth are triangular, broad at the base, and thin toward the peak, like a chisel or wedge, although sometimes they curve toward the cusp. Teeth have a root, which has a V-shaped notch at its base, and an enamel-covered crown. The root has a rough, porous, bone-like texture, whereas the enamel is smooth and polished, but sometimes broken by vertical cracks. The outward-facing (lingual) side of the tooth bulges outward. The inward-facing (labial) side of the tooth is generally flat to slightly curved. The border between the crown and root on the lingual side of the tooth is marked by a chevron-shaped feature called the bourlette or dental band. The edges of the teeth are serrated like steak knives.
Size: 71 x 62mm
Specimen bought in Japan
Curral das Freiras, the "Nuns Valley" is a small village situated in the crater of an extinct volcano, which has kept its 16th-century Santa Clara Convent where the nuns used to hide from pirates who were attacking Funchal.
Forest spring –composed from some larger and a number of smaller springs - broke out at Fényes-springs marshland and carries nearly 3000 m3 karstic water daily. By the intensively flowing water alder trees are becoming extinct on an ever extending area.
Commerce bereft,
Laved in vernal set,
The Condor extinct.
A former automotive repair shop, at sunset, in...
Decatur (Oakhurst), Georgia, USA.
14 June 2021.
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This is the last exemplary of Hvítserkur :) It is a 15 m. high sea stack just off shore the north Icelandic coast. Erosion has carved holes through its foundations and sculptured it in the shape you can see here.
The white marks on the stack are natural fertilizer, courtesy of the birds.
Exif:
ISO 200 ; f/4.5 ; 8 sec ; @18mm
Very late in the evening - almost dark.
Fuji X-E3 plus Helios 44M-7 wide-open. You would be forgiven to think that the care for the preservation of the diversity of life forms must be a demand coming from those most affected. Well, it also and most definitely comes from big business and the speculative investment interests of the super rich. The reason is simple: there is a lot of money to be made from conservation biology. Using genetic engineering to de-extinct the extinct woolly mammoth for example and reintroducing them to the Arctic tundra and thus "re-balancing" the original habitat surely is a publicity winner. Why worrying about climate crisis, urbanisation and countless animals and plants going extinct when there is a multi-billion $ company promising to recreate sound habitats including their diversity of animal life? Am I a bit satirical here? I'm afraid not.
Common Indian Babbler was the most common bird of Indian cities.Along with rapid urbanization & increase of air pollution this bird getting fewer day by day.
A scene long extinct from the Great Western Main Line as 37250 hauls a 'Speedlink' service consist of much varied stock on the approach to Cogload Junction at Charlton on June 4th 1987.
This is a 2008 Flickr picture of mine, that I completely forgot about until someone commented on it. It is slightly updated with a blurry background, but is basically the same. This bird is now extinct which is why no one else posted it on this website.