#Ornithischians

[stavrosskundromichalis]

Some hungry Abrictosaurus consors checking out a dried out river bed in Early Jurassic South Africa

[jurassicjoowan]

Gwanji as a pachycephalosaur, random idea that sprung to me since I thought about how big vintage Pachycephalosaurus depictions were.

Would honestly explain his massive level of aggression in the film, haha

[makairodonx]

Portrait of the famous duck-billed dinosaur Corythosaurus casuarius

[he-who-needs-to-be-silenced]

Results from today flocking paleostream

First we did isotelus rex, I drew a baby mid metamorphosis

I wasn’t there for Coahuilasaurus so we did Fona next, it’s still a wip

And last we did goyocephale

Good to be back

Also, I got older by a year since last time ._.

(Summer birthday)

YAY FLOCKING

[fishsfailureson]

A Fona, surveying her surroundings from on top of a tree stump, crouches down to greet one of her relatives.

This piece took ages good lord (started it on the 10th).

[ppaleoartistgallery]

#Maysozoic Day 10 - "Dracorex" (=Pachycephalosaurus spinifer?)

i genuinely dont know why i tortured myself by drawing two animals

here's the prompt list:

[knarme-art]

A cute Leaellynasaura character I drew for Art Fight!

Character author: Librarycat

[saritawolff]

A Patreon request for rome.and.stuff (Instagram) - Pachyrhinosaurus perotorum… that I went a bit overboard with lol. I’ve been waiting for an excuse to draw my favorite ceratopsian, and to digitally adapt my old Pachy marker drawing design.

So! Pachyrhinosaurus! As seen above, there were three known species of Pachyrhinosaurus, living in different locations and eras in Late Cretaceous North America.

The oldest, P. lakustai, was native to the Wapiti Formation of Alberta and British Columbia, Canada. It’s known for the extra spikes it has at the center of its frill.

The slightly younger P. canadensis was native to the lower Horseshoe Canyon Formation and the St. Mary River Formation of Alberta and northwestern Montana. It was the largest of the three.

The youngest, P. perotorum, was native to the Prince Creek Formation of Alaska. As this ceratopsid seemingly stayed put during the long, dark, cold Alaskan Winters, it likely had adaptations for keeping warm.

The depiction of a “woolly” Pachyrhinosaurus was first popularized by Mark Witton as a speculative work, but the trope has prevailed. While many paleontologists find a heavy feather covering on a centrosaurine to be highly unlikely, and maintain that the animal’s size and homeothermy would have kept it warm enough, we still have no skin impressions to suggest that P. perotorum was fully scaly. So a feather coating is not completely out of the question (though it is unlikely). Still, I love the look of a woolly Pachyrhinosaurus and how it challenges our previous conceptions of non-avian dinosaurs. Stranger things exist in nature. I had to include a “woolly” option, especially since I already use the guy as my avatar on my paleo Instagram account, SaritaPaleo.

Pachyrhinosaurus was particularly unique in that it seemingly traded off something that had previously worked for other ceratopsians, horns, for a large nasal boss instead. For Pachyrhinosaurus, a battering ram worked better than a sword.

It was herbivorous, using its strong cheek teeth to chew tough, fibrous plants. Perhaps during the dark and cold Winters, P. perotorum would have also dug for roots or even scavenged carcasses. At any rate, from observations of their unusually conspicuous growth banding, it appears growth for P. perotorum would have been stunted during the harsh Winter, but was extremely rapid in the warmer months, an adaptation for the Alaskan climate.

The tundra of the Prince Creek Formation housed a surprising amount of diversity. Pachyrhinosaurus perotorum would have lived alongside smaller ceratopsians like Leptoceratopsids, as well as other ornithischians like the pachycephalosaurine Alaskacephale and the hadrosaurid Edmontosaurus. Theropods such as Dromaeosaurus and Saurornitholestes, as well as a yet unidentified giant Troodontid, lived here as well. P. perotorum’s main predator would have been the tyrannosaur Nanuqsaurus. Small mammals were also somewhat common here, such as Cimolodon, Gypsonictops, Sikuomys, Unnuakomys, and an indeterminate marsupial.

(Btw, the request tier for Patreon starts at only $5 a month. 😉 Link is pinned at the top of my blog.)

[hhhhhhhhhhh934]

A baby Triceratops based on specimen UCMP 154452, there's definitely a few things wrong with it, especially considering I used a grainy photo of the skull for reference, but it was still fun to draw

[proflambeovt]

Paleovember 2023, Maiasaura!

Living in Canada and Montana around 76 mya, Maiasaura is particularly famous for being the species that proved that dinosaurs (or at least hadrosaurs) looked after their young, hence the name 'mother lizard'. This is thanks to particularly rich bonebeds preserving nesting grounds with specimens of just about every age, giving us a strong look at the nesting habits and life cycle of the average Maiasaura.

[stavrosskundromichalis]

Nobody messes with Heterodontosaurus tucki and her kids in Early Jurassic South Africa

[patchhampter]

happy pride!! have solider tf2 pachycephalosaurus ! YIPPIE! !

[makairodonx]

Maiasaura peebelsorum for Mother’s Day 2024

[alex-fictus]

Pachycephalosaurus.

Cretaceous. 100-66MYA.

These ornithischians are kinda nebulously placed within the phylogenetic tree? It may be possible though that they evolved from Ceratopsians like Psitaccosaurus and Yinlong but this is a tentative placement for the moment.

[fishsfailureson]

Olorotitan headshot

Last paleoart piece before artfight

[he-who-needs-to-be-silenced]

Triple whammy today:

Maysozoic day 10:

A pachycephalosaurus mother babysitting her kids (Dracorex)

[First Mother’s Day piece]

Maysozoic day 11:

Quick irritator piece

Maysozoic day 12:

Argentinosaurus and son walking at night during an aurora australis

[second Mother’s Day piece]