Meganeura Posted November 19, 2022 Share Posted November 19, 2022 Found these 3 spike osteoderms today, and I was wondering if anyone knew if they are Glyptodont or Holmesina - and how to tell the difference! @Harry Pristis @Shellseeker Thanks in advance! Fossils? I dig it. Link to comment Share on other sites More sharing options...
Brandy Cole Posted November 19, 2022 Share Posted November 19, 2022 Some glyptodont examples for comparison. https://www.researchgate.net/figure/Glyptodon-sp-juvenil-MCNCPV-246-Osteodermos-de-diferentes-morfotipos-observados-1-8_fig2_257366297 1 Link to comment Share on other sites More sharing options...
Shellseeker Posted November 19, 2022 Share Posted November 19, 2022 A closeup of edge and tail osteoderms from Wikipedia 3 The White Queen ".... in her youth she could believe "six impossible things before breakfast" Link to comment Share on other sites More sharing options...
Brandy Cole Posted November 24, 2022 Share Posted November 24, 2022 @Shellseeker Several of the replica photos of holmesina I've seen online make it seem like their tail osteoderms don't really project out in the same spikey way that glyptodont osteoderms do. So I'd be inclined to think Daniel's are glyptodont. Do you know if that's a correct distinction or am I jumping to conclusions based on poor photo samples? Also, thanks for continuing to post and share your knowledge with everyone here at a time when I'm sure you have a lot on your plate. I wish you the best in your repairs. 1 Link to comment Share on other sites More sharing options...
Meganeura Posted November 24, 2022 Author Share Posted November 24, 2022 1 minute ago, Brandy Cole said: @Shellseeker Several of the replica photos of holmesina I've seen online make it seem like their tail osteoderms don't really project out in the same spikey way that glyptodont osteoderms do. So I'd be inclined to think Daniel's are glyptodont. Do you know if that's a correct distinction or am I jumping to conclusions based on poor photo samples? Also, thanks for continuing to post and share your knowledge with everyone here at a time when I'm sure you have a lot on your plate. I wish you the best in your repairs. That’s my question ultimately - I can’t find any images for Holmesina with spiky osteoderms at all - only Glyptodont. 1 Fossils? I dig it. Link to comment Share on other sites More sharing options...
Harry Pristis Posted November 24, 2022 Share Posted November 24, 2022 Spikey . . . 2 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...
Meganeura Posted November 24, 2022 Author Share Posted November 24, 2022 1 hour ago, Harry Pristis said: Spikey . . . So easy to say mine are Glyptodont then, right? 1 Fossils? I dig it. Link to comment Share on other sites More sharing options...
Harry Pristis Posted November 24, 2022 Share Posted November 24, 2022 Tortoises have shallow roots on their spikes, while glyptodonts have deeper roots. 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...
Brandy Cole Posted November 24, 2022 Share Posted November 24, 2022 Thanks @Harry Pristis Link to comment Share on other sites More sharing options...
Shellseeker Posted November 24, 2022 Share Posted November 24, 2022 25 minutes ago, Harry Pristis said: Tortoises have shallow roots on their spikes, while glyptodonts have deeper roots. In a post a long time ago, I had the feeling that we were comparing Tortoise Osteoderms to Glyptodont tail or edge Osteoderms. I do not think that Holmesina osteoderms are similar. If they are, I have not yet found them. Sometimes these are very close and not all that easy to differentiate. 1 The White Queen ".... in her youth she could believe "six impossible things before breakfast" Link to comment Share on other sites More sharing options...
Shellseeker Posted November 24, 2022 Share Posted November 24, 2022 4 hours ago, Brandy Cole said: Also, thanks for continuing to post and share your knowledge with everyone here at a time when I'm sure you have a lot on your plate. I wish you the best in your repairs. Appreciate it. Fossil discussions are actually therapeutic.... It is noce to have power/internet back... I enjoy fossil hunting , and made it out yesterday... Found a Meg and a larger Hemi.... Also, I can still re_hunt in my own carport and around the edges of my house...It is almost like finding them for the first time. Here are some from today.. Hmmmm.. somehow I can not load photos... curious EDIT: Rebooted, and added photos 2 The White Queen ".... in her youth she could believe "six impossible things before breakfast" Link to comment Share on other sites More sharing options...
Meganeura Posted November 24, 2022 Author Share Posted November 24, 2022 7 hours ago, Shellseeker said: Appreciate it. Fossil discussions are actually therapeutic.... It is noce to have power/internet back... I enjoy fossil hunting , and made it out yesterday... Found a Meg and a larger Hemi.... Also, I can still re_hunt in my own carport and around the edges of my house...It is almost like finding them for the first time. Here are some from today.. Hmmmm.. somehow I can not load photos... curious EDIT: Rebooted, and added photos Jack, you gotta do another “trip” report that’s for your new-old finds. I know some of us newbies (Mainly me) would love to see some of the stuff you’ve found years ago! 1 Fossils? I dig it. Link to comment Share on other sites More sharing options...
Meganeura Posted November 24, 2022 Author Share Posted November 24, 2022 8 hours ago, Harry Pristis said: Tortoises have shallow roots on their spikes, while glyptodonts have deeper roots. Right - that’s why I knew the bigger 2 were armadillo/Glyptodont. The smaller one Is shaped the same and has the same… cross section as Glyptodont does: Or I would’ve also said it was tortoise. Fossils? I dig it. Link to comment Share on other sites More sharing options...
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