surfergirlatx Posted October 28, 2011 Share Posted October 28, 2011 (edited) I am in the process of cataloging my fossils. Here are my Echinoids – Salenia Texana from the Cretaceous aged Lower Glen Rose Formation Kgr(l), Trinity Group, Travis County, Texas. The Glen Rose formation is 108 million years old which places it in the Albian stage. All these were found at the same location. #1 Top #1 Bottom #1 Top scope view #1 Bottom scope view #1 Side scope view Edited October 29, 2011 by surfergirlatx "The road to success is always under construction." Author Unknown. Link to comment Share on other sites More sharing options...
surfergirlatx Posted October 28, 2011 Author Share Posted October 28, 2011 #2 Top View #2 Bottom View #2 Top Scope View #2 Bottom Scope View "The road to success is always under construction." Author Unknown. Link to comment Share on other sites More sharing options...
surfergirlatx Posted October 28, 2011 Author Share Posted October 28, 2011 #3 Top View #3 Bottom View #3 Side Scope View #3 Top Scope View #3 Side Scope View #3 Bottom Scope View "The road to success is always under construction." Author Unknown. Link to comment Share on other sites More sharing options...
surfergirlatx Posted October 28, 2011 Author Share Posted October 28, 2011 #4 Top View #4 Bottom View #4 Side Scope View #4 Bottom Scope View #4 Side Scope View with Worm Tube #4 Side Scope View "The road to success is always under construction." Author Unknown. Link to comment Share on other sites More sharing options...
surfergirlatx Posted October 28, 2011 Author Share Posted October 28, 2011 #5 Top View #5 Bottom View #5 Top Scope View #5 Bottom Scope View "The road to success is always under construction." Author Unknown. Link to comment Share on other sites More sharing options...
surfergirlatx Posted October 29, 2011 Author Share Posted October 29, 2011 #6 Top View #6 Bottom View #6 Side Scope View Top Scope View #6 Bottom Scope View #6 Side Scope View "The road to success is always under construction." Author Unknown. Link to comment Share on other sites More sharing options...
surfergirlatx Posted October 29, 2011 Author Share Posted October 29, 2011 #7 Top View #7 Bottom View #7 Top Scope View #7 Side Scope View #7 Bottom Scope View "The road to success is always under construction." Author Unknown. Link to comment Share on other sites More sharing options...
surfergirlatx Posted October 29, 2011 Author Share Posted October 29, 2011 #8 Top View #8 Bottom View #8 Side Scope View #8 Top Scope View #8 Alternate Side Scope View "The road to success is always under construction." Author Unknown. Link to comment Share on other sites More sharing options...
surfergirlatx Posted October 29, 2011 Author Share Posted October 29, 2011 #9 Top View #9 Bottom View #9 Top Scope View #9 Bottom Scope View "The road to success is always under construction." Author Unknown. Link to comment Share on other sites More sharing options...
surfergirlatx Posted October 29, 2011 Author Share Posted October 29, 2011 (edited) #10 Top View #10 Bottom View #10 Side Scope View #10 Side Scope View Edited October 29, 2011 by surfergirlatx "The road to success is always under construction." Author Unknown. Link to comment Share on other sites More sharing options...
surfergirlatx Posted October 29, 2011 Author Share Posted October 29, 2011 (edited) Some other type of Echinoid.....not sure what type??? I have only found 2 of these ever at my location. #11 Top View #11 Scope View #12 Top View #12 Scope View #12 Scope View #12 Scope View #12 Scope View #12 Scope View Edited October 29, 2011 by surfergirlatx "The road to success is always under construction." Author Unknown. Link to comment Share on other sites More sharing options...
JohnJ Posted October 29, 2011 Share Posted October 29, 2011 Some other type of Echinoid.....not sure what type??? I have only found 2 of these ever at my location. Kim, there is not enough of #11 to know what it is, but #12 is some type of Phymosomatid echinoid. It is hard to tell from the photos if the tubercles are perforated or worn. Perforated ones could suggest one of the Loriolia sp. more common in the upper Glen Rose Formation. Echinoid ID can be tricky due to the subtle differences unique to various species. Tubercle counts, apical systems, perforation, etc. are just part of distinguishing characteristics that go into discerning one species from similar ones. I hope you find a whole one. The human mind has the ability to believe anything is true. - JJ Link to comment Share on other sites More sharing options...
surfergirlatx Posted October 29, 2011 Author Share Posted October 29, 2011 Kim, there is not enough of #11 to know what it is, but #12 is some type of Phymosomatid echinoid. It is hard to tell from the photos if the tubercles are perforated or worn. Perforated ones could suggest one of the Loriolia sp. more common in the upper Glen Rose Formation. Echinoid ID can be tricky due to the subtle differences unique to various species. Tubercle counts, apical systems, perforation, etc. are just part of distinguishing characteristics that go into discerning one species from similar ones. I hope you find a whole one. Thanks John for your explination, that helps a lot! I agree, some of my finds are too worn and weathered to tell what they are. None the less, I really enjoy looking at them Kim "The road to success is always under construction." Author Unknown. Link to comment Share on other sites More sharing options...
Uncle Siphuncle Posted October 29, 2011 Share Posted October 29, 2011 Did the half echie show up in the same horizon as the S. texana? I've taken several over the years including a nice one about 30 mm a few weeks back from the S. texana zone. I looked at it under a microscope and saw perforated tubercles, thus confirming genus, but I don't profess to be an expert off the top of my head, so I can't assign it a species with certainty just yet, but will mention that I've seen T. texanum listed from that bed, and have also seen T. tenerum and Tetragramma sp. listed in the formation. Phymosoma is listed in the formation as well, but that genus as a whole seems much more prevalent in the Walnut, slightly younger. Neither Phymosoma nor Tetragramma is common in the Kgr. The specimen mentioned will show up in my Oct report, whenever I can get to it. Grüße, Daniel A. Wöhr aus Südtexas "To the motivated go the spoils." Link to comment Share on other sites More sharing options...
surfergirlatx Posted October 29, 2011 Author Share Posted October 29, 2011 Did the half echie show up in the same horizon as the S. texana? I've taken several over the years including a nice one about 30 mm a few weeks back from the S. texana zone. I looked at it under a microscope and saw perforated tubercles, thus confirming genus, but I don't profess to be an expert off the top of my head, so I can't assign it a species with certainty just yet, but will mention that I've seen T. texanum listed from that bed, and have also seen T. tenerum and Tetragramma sp. listed in the formation. Phymosoma is listed in the formation as well, but that genus as a whole seems much more prevalent in the Walnut, slightly younger. Neither Phymosoma nor Tetragramma is common in the Kgr. The specimen mentioned will show up in my Oct report, whenever I can get to it. Yes, I did find the piece of Echinoid in the same layer as the S. Texanas. Thank you so much for your additional information and areas that I can research. I found these very interesting as I always hunt in the same location and have a huge collection thus far and I have only come across these 2 partial Echinoids. I am greatly interested in your October report!!! I will be watching for it!!! :geek: Kim "The road to success is always under construction." Author Unknown. Link to comment Share on other sites More sharing options...
fossil man Posted October 29, 2011 Share Posted October 29, 2011 love the salenias Link to comment Share on other sites More sharing options...
surfergirlatx Posted October 30, 2011 Author Share Posted October 30, 2011 (edited) I came across 2 more S. Texana yesterday. One is in good condition and the other is badly crushed. #13 Top View #13 Bottom View #13 Top Scope View #13 Bottom Scope View #13 laying next to S. Texana #13 laying next to S. Texana Edited October 30, 2011 by surfergirlatx "The road to success is always under construction." Author Unknown. Link to comment Share on other sites More sharing options...
surfergirlatx Posted October 30, 2011 Author Share Posted October 30, 2011 Badly crushed one #14 Not sure if top or bottom #14 Other side #14 Scope View side 1 #14 Scope view side 2 "The road to success is always under construction." Author Unknown. Link to comment Share on other sites More sharing options...
astron Posted October 30, 2011 Share Posted October 30, 2011 Nice finds and excellent pics and presentation, Kim Congratulations Astrinos P. Damianakis Link to comment Share on other sites More sharing options...
surfergirlatx Posted October 30, 2011 Author Share Posted October 30, 2011 Nice finds and excellent pics and presentation, Kim Congratulations Thanks so much Astron!!!! I tried to show each one the best I could !!! They are so fun to find and look at!!! I just LOVE them!!!! Kim "The road to success is always under construction." Author Unknown. Link to comment Share on other sites More sharing options...
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