marginocephalian

A lone Pachyrhinosaurus, wandering away from the migrating herd, stops grazing to witness the first rays of sunlight after months of darkness, announcing the arrival of spring. The day will last only for a moment, but it means change for all alaskan creatures.

The mammals know it’s time to leave their burrows. The hadrosaurs are coming back with their honking calls. While the little trodoontids and dromeosaurids are starting to build their nests, and the arctic tyrannosaurs are shedding their white coats to match the melting snow, the ankylosaurs are waking up from their hybernation.

For the Pachyrhinosaurs, it’s time for some head butting.

eomao  asked:

Hello dracontes! I've come to you before with questions about dinosaur biology, and I'm hoping you'd be willing to point me in the right direction again. In my webcomic I'm coming to a point where pachycephalosaurus play a significant part, and I'm not sure how accurate the "traditional" depiction is. I've heard ceratopsians may have had quills, is it possible pachys would have had a similar feature? Are there any other outstanding theories making the rounds? Thank you for your consideration!

First my profound apologies for not answering any sooner, if it is indeed the case that your question was asked a while ago (I see no date on the messages).  All I can say is that on my connection, Tumblr is irritatingly slow on the reblogging, and I’ve recently been fairly preoccupied otherwise.

On to your questions…

Considering both Tianyulong and Kulindadromeus along with Psittacosaurus you’re pretty much free to devise whatever intermediate filamentous integument distribution pattern you like. The implied method, should you be unaware, is phylogenetic bracketing. True enough, it is rather unlikely that the dome and associated spines had any covering other than keratinous plates.

I do hope this isn’t too concise to be intelligible. Do follow up if you have more questions. I’ll be sure to catch up with your comic in the meanwhile. Keep up the great work :-)