@PRECISETHF@CrestedThunder Skin impressions? From the frill?
But you can check my thoughts on the thread with @CrestedThunder , and thoughts on keratin faces.
It’d be interesting to see these published if true! And hopefully not folded up skin from when the animal died.
@CrestedThunder Some of the rugose and vascularized textures on their faces remind me of the surface textures of those of its horncores and epioccipitals… I’m not saying I’m married to the idea of keratin faces. But it’s an idea I’ve entertained. Highly vascularized skull… has horns… perhaps?
@CrestedThunder I am unaware of published skin impressions from the frill… I have seen people explain these rugosities as anchors for large scales, though I am not particularly convinced by those…
@ceratopsyuta So here we run into a problem.
Cryptarcus is more closely related to Penta than Chasmo. And the only Chasmo currently is C. belli.
Which is different from the OLDER heart-shaped Chasmo, which was previously referred to C. russelli.
So how does one refer to it now?
Chasmo sp.?
@ceratopsyuta That specimen most closely resembles A. Heart shaped frill Chasmo, previously C. russelli.
Chasmo belli is known from a good skull, with a straight posterior bar (G). Stratigraphically higher.
Cryptarcus (previously Chasmo russelli) is from high in strat.
Campbell et al., 2016
@Collinson_C@NatSciChannel To be fair, that discussion was a Twitter post with ~30 views.😅
But what I did notice is that they say the Penta clade/lineage is restricted to the south of North America, with Cryptarcus being anomalous.
However, Pentaceratops is known from Alberta (Longrich, 2014)!
@NatSciChannel Chasmosaurus sp.? Or refer to it as “the lower Dinosaur Park Fm Chasmosaurus”?
It appears that the older heart-shaped-frill Chasmosaurus is nameless.
Figure 3 and Figure 4F of Campbell et al., 2016.