Intermountain Paleo Posted July 24, 2010 Share Posted July 24, 2010 Has anyone seen an astragalus (talus) and calcaneum from a Uintan age primate that resembles these in size and/or the length of the heel portion of the calcaneum? The fossils were found along with many other postcranial and cranial bones high in the Uinta B of the Uinta Formation of Utah. The right astragalus (talus) and calcaneum were found articulated. The complete right calcaneum (length 34mm) and talus (talar neck length 11mm, trochlear length 13mm) are bigger than any primate that I have been able to find documented from the Uintan. Thanks! Dorsal side of calcaneum Ventral side of calcaneum Posterior end of calcaneum Anterior end of calcaneum Side view of talus Dorasal view of talus Ventral view of talus Link to comment Share on other sites More sharing options...
Auspex Posted July 25, 2010 Share Posted July 25, 2010 Well, I can't shed any light on your (amazing) specimen (rather too rarefied a knowledge base for me), but I cannot let your inquiry go unacknowledged. I tried to google up something useful, but all the info that appeared to have substance was in papers requiring expensive subscriptions. Our member Fruitbat has assembled and posted quite a collection of PDFs; here is a link to the primate collection: Part 18: Fossil Primates. Maybe this will help... "There has been an alarming increase in the number of things I know nothing about." - Ashleigh Ellwood Brilliant “Try to learn something about everything and everything about something.” - Thomas Henry Huxley >Paleontology is an evolving science. >May your wonders never cease! Link to comment Share on other sites More sharing options...
Intermountain Paleo Posted July 25, 2010 Author Share Posted July 25, 2010 Thanks for the link to the primate pdfs. I did find a few that might be relevant that I didn't already have. Link to comment Share on other sites More sharing options...
Fruitbat Posted July 25, 2010 Share Posted July 25, 2010 I updated that section considerably today. You might want to give it one more look. -Joe Illigitimati non carborundum Fruitbat's PDF Library Link to comment Share on other sites More sharing options...
siteseer Posted July 25, 2010 Share Posted July 25, 2010 That's interesting. I've only seen photos of teeth of Uintan primates. I know primates really drop off in diversity in North America after the Uintan - already less varied than earlier in the Eocene. Has anyone seen an astragalus (talus) and calcaneum from a Uintan age primate that resembles these in size and/or the length of the heel portion of the calcaneum? The fossils were found along with many other postcranial and cranial bones high in the Uinta B of the Uinta Formation of Utah. The right astragalus (talus) and calcaneum were found articulated. The complete right calcaneum (length 34mm) and talus (talar neck length 11mm, trochlear length 13mm) are bigger than any primate that I have been able to find documented from the Uintan. Thanks! Dorsal side of calcaneum Ventral side of calcaneum Posterior end of calcaneum Anterior end of calcaneum Side view of talus Dorasal view of talus Ventral view of talus Link to comment Share on other sites More sharing options...
jpc Posted July 26, 2010 Share Posted July 26, 2010 Being a fan of Eocene of WY, all I can say is that this is cool stuff. I cannot help with ID. I am struggling with some of my own. Is there any chance there is more of this critter?... finding and astr and calc together suggests maybe more bones. Link to comment Share on other sites More sharing options...
Intermountain Paleo Posted July 26, 2010 Author Share Posted July 26, 2010 Yes there was more of the primate. We have quite a few more post cranial bones as well as some jaw material with weathered teeth, canines, and an M1. The primate ID was based off a right distal humerus and the M1. Link to comment Share on other sites More sharing options...
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