JohnJ Posted January 25, 2009 Share Posted January 25, 2009 I did get out in the cold wind yesterday. It was worth it. I found some Phymosoma spines, a crab claw, and this little Salenia echinoid (my first one for this location). However, I appeal again to those more studied in the spherical inverts...is this S. mexicana, S. leanderensis, or S. phillipsae? Thanks for any help. The human mind has the ability to believe anything is true. - JJ Link to comment Share on other sites More sharing options...
Mike Murphy Posted January 25, 2009 Share Posted January 25, 2009 John: The large number of ambulacral tubercles (at least 11 per row) in the ambulacra eliminates Salenia phillipsae (which has 5 to 6 tubercles per row) from further consideration. The lack of radial ornamentation on the plates, the round apical system and the apparent number of ambulacral tubercles makes me believe that the echinoid may be Salenia leanderensis. Salenia mexicana has 18 to 20 ambulacral tubercles per row. Without examining the echinoid more closely, I cannot state with certainty that it is not a juvenile Salenia mexicana, however. Count the number of ambulacral tubercles in a row. If there are 11 to 12, then it likely it is Salenia leanderensis. If there are 18 to 20, then it is likely that it is Salenia mexicana. Was the echinoid found in the Walnut? Regards, Mike Link to comment Share on other sites More sharing options...
JohnJ Posted January 26, 2009 Author Share Posted January 26, 2009 Mike, I suspected S. leanderensis because it has 24 total tubercles combined in two rows. (I didn't want to prejudice anyone and lead with leanderensis) The formation would be very low in the Walnut, or edging into the Glen Rose. Thanks for the insight. The human mind has the ability to believe anything is true. - JJ Link to comment Share on other sites More sharing options...
MB Posted January 26, 2009 Share Posted January 26, 2009 Nice echinoid JohnJ BTW, Mike. is it possible to have a little key of the different TX Salenias? http://www.mbfossilcrabs.com/ Link to comment Share on other sites More sharing options...
mommabetts Posted January 26, 2009 Share Posted January 26, 2009 Nice find, love the ech. Link to comment Share on other sites More sharing options...
emmytee Posted January 26, 2009 Share Posted January 26, 2009 cutie pies! I arise in the morning torn between a desire to improve the world and a desire to enjoy the world. This makes it hard to plan the day. ~ E. B. White Link to comment Share on other sites More sharing options...
Guest bmorefossil Posted January 26, 2009 Share Posted January 26, 2009 very nice Salenia leanderensis!!! Link to comment Share on other sites More sharing options...
Roz Posted January 27, 2009 Share Posted January 27, 2009 Nice echinoid JohnJ BTW, Mike. is it possible to have a little key of the different TX Salenias? These are not all the salenias in Texas but some of the most common ones. That is from the pdf, Comanche Echinoids... Welcome to the forum! Link to comment Share on other sites More sharing options...
JohnJ Posted January 28, 2009 Author Share Posted January 28, 2009 These are not all the salenias in Texas but someof the most common ones... Roz, I like MB's idea. Do you have any "scaled" pics of Salenia echs you've found in Texas? Lance, Dan, Mike, and anyone else? It would be neat if we could get photos (with different views and scale reference) of all the known Salenia species found in Texas. It would be even better if all the pics were of personal finds or acquisitions...kind of a mini forum project (the Texas Salenia Project ). Multiple photos of the same species could reveal variations in size and other characteristics. So if someone posts a S. texana, it would still be great to see others. Besides, the little "planetoids" just look cool! Thanks. The human mind has the ability to believe anything is true. - JJ Link to comment Share on other sites More sharing options...
LanceH Posted February 5, 2009 Share Posted February 5, 2009 JohnJ, Here's a fantastic Salenia texana gifted to me by Mr. Woehr. You can use these pics, they are copyright free. Link to comment Share on other sites More sharing options...
CreekCrawler Posted February 6, 2009 Share Posted February 6, 2009 Man that ech would display awesome with a black background. Nice gift! Link to comment Share on other sites More sharing options...
JohnJ Posted February 6, 2009 Author Share Posted February 6, 2009 JohnJ,Here's a fantastic Salenia texana gifted to me by Mr. Woehr. You can use these pics, they are copyright free. Thanks, Lance. I've decided to shift this project idea to a new post - Texas Salenia Project. I hope you and others will help this idea gain momentum. I think it would be cool if we built an ad hoc ID guide. Thanks for the basis of the idea, MB! The human mind has the ability to believe anything is true. - JJ Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now