Dani Barrera Guevara

Howdy Hey! 🦖 💛🤍💜🖤 🇲🇽 Mexican Paleoartist and Research Associate at Badlands Dinosaur Museum, ND, USA and BENC, Coah, MX. Student at UAF, AK, USA.

[Dani Barrera Guevara @Barrerasaurus]

@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.

[Dani Barrera Guevara @Barrerasaurus]

@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?

[Dani Barrera Guevara @Barrerasaurus]

@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…

[Ventura Salas (Commissions open) @venturadejesus2]

Hi, please, correct me if I'm wrong!

[Dani Barrera Guevara @Barrerasaurus]

@MbvBaryonix Velafrons first! Magnapaulia doesn’t even have a crest!

[Dani Barrera Guevara @Barrerasaurus]

@Xx_Sl0p_Gun_xX @LiterallyMiguel That is not what a hadrosaur looks like! Looks like a fish to me. Big fishie.

[Dani Barrera Guevara @Barrerasaurus]

@Paleoartologist Congrats!

[Dani Barrera Guevara @Barrerasaurus]

@ZBoomer4 @skeletaldrawing An embayed parietal? 🥸

[Dani Barrera Guevara @Barrerasaurus]

@PRECISETHF The Triceratops Museum of Triceratops Natural Triceratops Tricera-History

[Dani Barrera Guevara @Barrerasaurus]

@AndrejSpiridon4 Turtle feet!

[Dani Barrera Guevara @Barrerasaurus]

@Dansdoodles2000 Hahahaha toddler-ceratops.
Hoping to add to the collection of juvi ceratopsids soon.

[Dani Barrera Guevara @Barrerasaurus]

@Evoincarnate Yeah I’m not believing the primitive war closing-minecraft-chest sound. 😅

[Dani Barrera Guevara @Barrerasaurus]

@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.?

[Dani Barrera Guevara @Barrerasaurus]

@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

[Dani Barrera Guevara @Barrerasaurus]

@NatSciChannel @TheRedRaptor65 @JoschuaKnuppe You are on your A-game sharing new papers!

[Dani Barrera Guevara @Barrerasaurus]

@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)!

[Dani Barrera Guevara @Barrerasaurus]

@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.