austinswamp Posted January 6, 2017 Share Posted January 6, 2017 I don't mean to overkill with ID questions ha. Haven't quite been adjusted yet to a forum group that is actually rich with knowledge. I have so much to learn, really stoked this exists. Anyways I found the left item from Walnut Creek in Austin. The rock to the right came from the Pedernales river from a gravel pit. Link to comment Share on other sites More sharing options...
austinswamp Posted January 6, 2017 Author Share Posted January 6, 2017 Link to comment Share on other sites More sharing options...
JohnJ Posted January 6, 2017 Share Posted January 6, 2017 The partial fossil on the left is most likely the rudist, Sauvagesia texana. I think the other item is a geologic formation. 6 The human mind has the ability to believe anything is true. - JJ Link to comment Share on other sites More sharing options...
ynot Posted January 6, 2017 Share Posted January 6, 2017 44 minutes ago, austinswamp said: I don't mean to overkill with ID questions Not a problem, We like to help others understand what is going on here. Just for future posts, the more angles You show the better We can tell what You have. A scale (ruler prefered) in the picture also helps. Tony PS I agree with JohnJ on this one. 2 Darwin said: " Man sprang from monkeys." Will Rogers said: " Some of them didn't spring far enough." My Fossil collection - My Mineral collection My favorite thread on TFF. Link to comment Share on other sites More sharing options...
austinswamp Posted January 6, 2017 Author Share Posted January 6, 2017 Right on Link to comment Share on other sites More sharing options...
caldigger Posted January 6, 2017 Share Posted January 6, 2017 The one on the left is giving me more of an oyster vibe. But you (John) are obviously more in tune with Texas thangs. 1 Link to comment Share on other sites More sharing options...
austinswamp Posted January 6, 2017 Author Share Posted January 6, 2017 Doesn't resemble a clam 1 Link to comment Share on other sites More sharing options...
JohnJ Posted January 6, 2017 Share Posted January 6, 2017 At first glance, one of the Lophas might look similar; but, this is only a partial 'half cylinder/cone' of Sauvagesia sp. The texture of the broken top surface, zig-zag growth lines and smooth interior are all distinguishing characteristics. Checking things out a bit more, it looks like some of the Sauvagesia species have been combined with Radiolites. This specimen is a better match for Radiolites acutocostata (page 132). 4 The human mind has the ability to believe anything is true. - JJ Link to comment Share on other sites More sharing options...
austinswamp Posted January 6, 2017 Author Share Posted January 6, 2017 Wow! Great link..That's it Link to comment Share on other sites More sharing options...
abyssunder Posted January 6, 2017 Share Posted January 6, 2017 I agree with JohnJ, it has a good resemblance with Radiolites acutocostata. The original description is in Adkins, W. S. 1930. New rudistids from the Texas and Mexican Cretaceous. The University of Texas Bulletin 3001:77–100, 122–133 . (excerpt made by me for a better convenience and further reference) " Sauvagesia acutocostata n.sp. Plate VII, Figures 3-4 Lower valve only; species aparently solitary; holotype practically straight, conical, medium sized, ribbed, cross-section a short oval. The wall is of medium thickness, thin at E and S, thickest dorsally. Inner shale layer thin, smooth, superficially marked by a rectangular network of circular and longitudinal faint striae. The thick middle layer of the shell has a cellular texture and is composed of the usual conical laminae. The cortical layer is thin and smooth, except for faint growth lines and faint longitudinal striae. (...) Upper Austin Chalk (probably basal Santonian) : Travis County, Texas, on Little Walnut Creek, about one-fourth mile downstreem from bridge of Austin-Cameron road; collected by Mr. R. W. Cumley, 1929. " Plate VII Figs. 1-2. Durania aguilae n. sp. holotype Figs. 3-4. Sauvagesia acutocostata n. sp. holotype Fig. 5. Eoradiolites quadratus n. sp. paratype 4 " We are not separate and independent entities, but like links in a chain, and we could not by any means be what we are without those who went before us and showed us the way. " Thomas Mann My Library Link to comment Share on other sites More sharing options...
austinswamp Posted January 6, 2017 Author Share Posted January 6, 2017 Same area I found it! Link to comment Share on other sites More sharing options...
fifbrindacier Posted January 7, 2017 Share Posted January 7, 2017 If you want to know what kind of shells you can find in Texas, you can also follow this link : http://fossilshells.nl 1 "On ne voit bien que par le coeur, l'essentiel est invisible pour les yeux." (Antoine de Saint-Exupéry) "We only well see with the heart, the essential is invisible for the eyes." In memory of Doren Link to comment Share on other sites More sharing options...
abyssunder Posted August 19, 2017 Share Posted August 19, 2017 The specimen on the right side looks like speleothem, possibly boxwork . " We are not separate and independent entities, but like links in a chain, and we could not by any means be what we are without those who went before us and showed us the way. " Thomas Mann My Library 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