#ceratopsids

[beaubees]

Diabloceratops Eatoni 🌱 4/4

[beaubees]

Pachyrhinosaurus Lakustai 🌿 1/4

[real-dinosaur-facts]

All baby triceratopses are born with the name “6 7” until they are old enough to choose one for themselves. Unfortunately, most of them decide to keep the name, resulting in 78% of all adult triceratopses being names “6 7” and 20% having the name “7 6” to be divisive. Only 2% of all triceratops have a unique name, which can be exponentially confusing for everyone who is not a triceratops. Interestingly enough, it seems like it does not stand as an issue for them.

[secularsasquatch]

[secularsasquatch]

[secularsasquatch]

[noddytheornithopod]

i still find it surreal that tyrannosaurs are the most iconic and recognisable large theropod dinosaurs but they were only apex predators on like two continents, even laurasian europe's largest theropods were different

and then ceratopsids are even more nuts, only being diverse large herbivores on a third of a continent and only having any other recognisable presence in one more

[saritapaleo]

Archovember 2024 Day 9 - Spiclypeus shipporum

Spiclypeus shipporum was a large chasmosaurine ceratopsian from Late Cretaceous Montana, USA. It is only known from one specimen (a partial skull, vertebrae, ribs, a left humerus, a left ilium and the left hindlimb) nicknamed “Judith” after the Judith River Formation. But this specimen is very unique, with brow horns that swept out to the side and two epiparietals (frill horns) fused and curling down over its frill. Judith appeared to also have sustained an infection in their frill, hypothesised to have come from an injury inflicted by a rival Spiclypeus, where the rival’s brow horns pierced into the bone of Judith’s frill. They also had a more serious infection in their humerus, with a large abscess, as well as evidence of arthritis. Judith was an adult, at least 10 years old, and it’s suspected that they had reach an advanced age before dying, despite their injuries. They were a testament to the rough life of combat and survival ceratopsians faced, and their resilience in spite of it all.

Spiclypeus lived in the Judith River Formation during the Late Campanian. It would have lived on a coastal floodplain criss-crossed by rivers and oxbow lakes. It may have lived alongside other ceratopsians, but there is a hypothesis that Spiclypeus, Ceratops montanus, and Pentaceratops aquilonius may all be the same species, however, so far their remains are too fragmentary to form a conclusion. It would have also shared space with the hadrosaur Corythosaurus, the ankylosaurs Edmontonia and Zuul, and the pachycephalosaur Hanssuesia. Theropods included the dromaeosaurs Dromaeosaurus and Saurornitholestes, the avialan Hesperornis altus, and the tyrannosaurid apex predators Daspletosaurus and Gorgosaurus. Other reptiles included lizards, turtles, the choristodere Champsosaurus, and the alligatoroids Leidyosuchus and Deinosuchus.

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