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Dennonyx — Pachyrhinosaurini
Published: 2014-01-12 17:01:37 +0000 UTC; Views: 4577; Favourites: 105; Downloads: 24
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Description
The most inclusive clade including Pachyrhinosaurus but not Centrosaurus (maybe including also Sinoceratops and Xenoceratops).1. Einiosaurus procurvicornis
2. Achelousaurus horneri
3. Pachyrhinosaurus canadensis
4. Pachyrhinosaurus lakustai
Not to scale.
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Comments: 20
I wonder what the bosses were used for if they weren't part of a horn? Perhaps they could still be used as a weapon?
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Maybe they could be a passive defense as well as the frill, to protect the pre-orbital area from attack by predators or other blunt bodies
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Look at the bottom of the comments
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Two reasons:
1. Its holotype is represented by a immature specimen
2. a maximum of four big-heads entered in the sheet x3
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