Source: https://www.bilibili.com/en/video/BV146NGzGEcq/?spm_id_from=333.788.recommend_more_video.3&trackid=web_related_0.router-related-2479604-9kkcc.1792611736768.299

A genus of pterosaurs, soared the skies over North America around 90-100 million years ago. with wingspans 23 feet or more, these flying reptiles had long, toothless beaks. Their closest living relatives are birds, and fossils found in Kansas reveal much about their flight mechanics and lifestyle.

You think Anomalocaris was bad? Well Omnidens outsized by 10 times!The true apex predator of the cambrian!

1st image: https://www.deviantart.com/hodarinundu/art/Diving-with-Omnidens-804451974

2nd image: https://www.deviantart.com/acrosaurotaurus/art/Omnidens-amplus-851831109

3rd image: https://x.com/Prehistorica_CM/status/1250091009121366016

Found in the Museu Arqueològic in Banyoles.

First image is by Gabriel Ugueto, check him out on Facebook, he makes some great stuff! The second image I found on google, hope you guys enjoy!

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Inspired by a recent paper on the Loltun cave findings. Mind you, the paper says the megafauna remains were misplaced so this is just a nocturnal flight of fancy.

A study from the 80s apparently found actual megafauna bones including sabercat at a level dated only 2000 years. But the new paper suggests they may have been disturbed by human activity.

"The Longest Neck on Earth"

In late jurassic China, a lone Sinraptor was out alone in the open field when it was suddenly awestruck. Standing before him, were a huge flock of Sericipterus, circling and hovering, over a truly enormous and gargantuan marvel.

*Based on the fragmentary uncatalogued, probable Mamenchisaurid indet. specimen known as "Beechbone" (Estimated to be 35m Long, 65 tonnes)

https://nitter.cf/TredwayJack93/status/2063305227827024205

I’m thrilled to share my latest illustration for the community art project of the “Herd of Horns” TTRPG Kickstarter campaign.

I was blessed to be tasked with illustrating a face-off between Gorgosaurus and the massive Deinosuchus — two predators who will appear in the RPG as adversaries you’ll have to overcome as a Ceratopsian dinosaur.

This piece will be included in the core book, and it exists thanks directly to the feedback and participation of the amazing Herd of Horns backers. 🙌

A huge thank-you to everyone for the incredible support, as always. And a special shoutout to the brilliant Weaponized Ink crew for giving me yet another incredible opportunity to contribute to this one-of-a-kind project.

https://en.wikipedia.org/wiki/Amplectobelua

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Shortly after the Permian-Triassic extinction, possessed a rather peculiar set of teeth, which it is believed to have used to crush cephalopods.

Dating to about 47-42 mya (Middle Eocene), the fauna of the Irdin Manha Formation of Mongolia represents one of the last hurrahs of the old school Paleogene fauna, housing some of the last dinoceratans, like the bizarre-looking Gobiatherium (which looks like a cartoon character) and some of the last-surviving pantodonts like Eudinoceras (obviously misidentified originally), along with various forms of brontotheres (including some of the first giant forms like Gnathotitan) and small, dog-sized basal paraceratheres like Forstercooperia. The largest meat-eater from this biome is the famous stem-entelodont Andrewsarchus, with a skull almost 3 feet long, and living alongside were other killer ungulates, some of the last mesoynchids, including one of the largest (Mongolonyx, who had a skull similar in size to large hyaenodonts), and the oldest known big-bodied pan-carnivoran, the tiger-sized oxyaenid Sarkastodon (who is also the last of its kind).

Life reconstruction of Compsognathus that I created as part of a commission project.

This bipedal theropod lived during the Late Jurassic (approximately 150 million years ago) in what is now Europe.

For decades after its discovery, it was considered the smallest dinosaur known, until fossils of smaller species were described. Nevertheless, it was still small, with estimated lengths ranging from 70 cm to 1.4 m and body masses ranging from 0.5 to 3.5 kg.

Like other compsognathids, it was a slender, agile carnivore that fed on small animals. In addition to its cranial and body morphology, the remains of small lizards preserved in the abdominal region support this dietary interpretation.

Popularized by Steven Spielberg's Jurassic Park, there is no conclusive evidence that it lived or hunted in groups, as depicted in the films and related media.

The main reference for this reconstruction's proportions and size was Dr. Scott Hartman's skeletal reconstruction, shown in the last image

🔴Check out the full illustration process on my YouTube channel! Link below:

https://youtu.be/Z96xRMQnVYY

Left to right: A. giganteus hunting Chilotherium, A. horrbilis hunting giraffid, A. kabir having caught a Sahelanthropus, and A. coloradensis hunting Teleoceras.

By the Late Miocene, around 11 million years ago, cats first rose to the position of apex predators across much of the globe (sans Australia and South America). These weren’t the familiar felines and panthers of today but the extinct machairodontines, the saber-toothed cats. The group that saw by far the most success were the scimitar cats (homotherins) and long before the emergence of the long-limbed, cursorial Homotherium (Pliocene-Pleistocene), more generalized but significantly larger forms ran rampant across much of the world around 9.5 to 5 mya. The taxonomy of early scimitar cats is notoriously messy, with the genera Machairodus, Amphimachairodus and the exclusively North American Nimravides having joint custody of various species respectively, but many of the largest species have been assigned to Amphimachairodus in recent years, with the generally accepted species dating to between 9.5 to 5 mya, while Machairodus has been cut down to a few Old World species dating to 12.6 to 8.7 mya.

What's notable about the many species of Amphimachairodus is their penchant for gigantic sizes, comparable to Smilodon populator, which include A. giganteus from Eurasia, A. horribilis from China and A. kabir from Chad, and even smaller forms like the North American A. coloradensis were still around the size of modern tigers or lions. The skull of A. horribilis is 16 inches long, only rivaled in size by the largest S. populator, while A. giganteus shows marked sexual dimorphism akin to modern big cats, which could perhaps indicate lion-like social structures (though solitary big cats are just as dimorphic). Currently, it seems that the genus originated in Asia with A. hezhengensis, before quickly spreading into Europe and Africa, and even reaching North America by around 7.5 mya, with the southernmost occurence there being in Guanajuato, Mexico with A. alvarezi. They replaced the dwindling bear-dogs and hyainailourids as the apex predators across the Holarctic and Africa. At their size, species of Amphimachairodus could likely have taken on even the biggest herbivores of their time like giraffids, chalicotheres, rhinos and even proboscideans.

Competition included the agriotheriin bears, which were similarly widely distributed across the Holarctic, while other machairodonts (like metailurins and basal smilodontins) likely steered clear of these giants, other than Nimravides, which also reached immense sizes around the time Amphimachairodus entered North America (with Nimravides lahayishupup). Albanosmilus and Barbourofelis, the last nimravids, were also potential competitors, though still smaller and they vanished by 7 mya. Upon entering North America, A. coloradensis would have also encountered the borophagine dogs, including the giant Epicyon haydeni (if only for a short while, like with Barbourofelis), which is also around the time the modern canine dogs first radiated into the Old World. A common competitor for the Eurasian Amphimachairodus would have been Dinocrocuta, a lion-sized hyena and the biggest of its family, though Amphimachairodus would ultimately outlast it as well. At Chad, the gigantic A. kabir coexisted with fellow scimitar cat Lokotunjailurus and potentially early versions of Dinofelis (a metailurin) and Megantereon (a smilodontin), dwarfing all of them, and it also could have preyed on the hominine ape Sahelanthropus, often touted as the oldest representative of the lineage leading to humans. Its fossil record ends around the Miocene-Pliocene boundary, but the lineage didn't go extinct, but rather gave rise to Homotherium, which reached similar global success during the Pliocene-Early Pleistocene.

Credited to the Owner: https://youtu.be/4pcMdNKh_8A?si=RpGXLR818PwkDcd3

It lived in the Americas 11,000 years ago. Weighing from 1,500 to 3,500 pounds and standing 10 to 12 feet tall when upright, it was the largest mammalian land predator in North America and the second largest bear of its time, second only to the South American Giant Short-Faced Bear.

Credited to the Owner: https://youtu.be/kJ2b8ebzO7s?si=wkr4xxUwuF9pL069