Darwin and Wallace Posted July 21, 2016 Share Posted July 21, 2016 Hey all, So I've got some Sirenian fossils (skull cap and mandible) here and I was curious if anyone can inform me whether they are dugong or manatee? I haven't found a lot of visual reference that's usable to ID these things. Link to comment Share on other sites More sharing options...
Darwin and Wallace Posted July 24, 2016 Author Share Posted July 24, 2016 Anyone? Link to comment Share on other sites More sharing options...
CraigHyatt Posted July 24, 2016 Share Posted July 24, 2016 What's the story on these? What gave you the tentative ID? How were they acquired? Info: Craig Hyatt, retired software/electrical engineer Experience: Beginner, fossil hunting less than a year Location: Eagle Pass, TX USA on the border with Mexico, hot dry desert Formation: Escondido, Marine, Upper Cretaceous Materials: Sandstone, Mudstone, Shale, Chert, Chalk Typical: Thalassinoides, Sphenodiscus, Exogyra, Inoceramus Reference: http://txfossils.com/Txfossils.html Link to comment Share on other sites More sharing options...
Boesse Posted July 25, 2016 Share Posted July 25, 2016 Sorry I forgot to actually comment on this - the mandible is indeed Trichechus, and it may be a match for the Pleistocene species Trichechus manatus bakerorum named from the late Pleistocene of Florida. 1 Link to comment Share on other sites More sharing options...
doushantuo Posted July 25, 2016 Share Posted July 25, 2016 (edited) http://onlinelibrary.wiley.com/doi/10.1002/ar.22525/epdf https://www.researchgate.net/profile/Giovanni_Bianucci/publication/248554333_The_southernmost_sirenian_record_in_the_eastern_Pacific_Ocean_from_the_late_Miocene_of_Chile_Comptes_Rendus_Palevol_5945-952/links/5591497308aed6ec4bf7d297.pdf Edited July 25, 2016 by doushantuo Link to comment Share on other sites More sharing options...
doushantuo Posted July 25, 2016 Share Posted July 25, 2016 (edited) http://www.stri.si.edu/sites/publications/PDFs/STRI-W_Jaramillo_Uhen_2010_Marine_Mammals_Panama.pdf https://www.researchgate.net/profile/Diana_Sarko/publication/227957486_Estimating_body_size_of_fossil_sirenians/links/0912f508ac13eb961b000000.pdf Edited July 25, 2016 by doushantuo Link to comment Share on other sites More sharing options...
doushantuo Posted July 25, 2016 Share Posted July 25, 2016 http://onlinelibrary.wiley.com/doi/10.1002/ar.20540/epdf Link to comment Share on other sites More sharing options...
Darwin and Wallace Posted July 25, 2016 Author Share Posted July 25, 2016 Thanks again Boesse and doushantuo! Any idea on the skull cap? Link to comment Share on other sites More sharing options...
Harry Pristis Posted July 25, 2016 Share Posted July 25, 2016 For comparison: http://pristis.wix.com/the-demijohn-page What seest thou else In the dark backward and abysm of time? ---Shakespeare, The Tempest Link to comment Share on other sites More sharing options...
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