westex11 Posted March 4, 2011 Share Posted March 4, 2011 I found it in a river bed in west Texas around Tilden. Link to comment Share on other sites More sharing options...
Uncle Siphuncle Posted March 4, 2011 Share Posted March 4, 2011 Looks like Edwards formation...you are far from its current outcrop, but it was probably redeposited eons ago as various rivers wandered around the Hill Country - maybe the Nueces in your case. The Edwards is very hard stuff which holds up well when transported considerable distances. It is a major component of the Uvalde and Leona gravels which date Pliocene as the age of their deposit as gravels. Grüße, Daniel A. Wöhr aus Südtexas "To the motivated go the spoils." Link to comment Share on other sites More sharing options...
westex11 Posted March 4, 2011 Author Share Posted March 4, 2011 What do you think it is? Link to comment Share on other sites More sharing options...
John Southard Posted March 5, 2011 Share Posted March 5, 2011 (edited) What do you think it is? How about some sort of Cypraea? Imagine a cowry shell looked at from the perspective of an apical cross-section. Perhaps an end was worn away or somehow naturally malformed. Just a thought. Can we get another picture capturing an angle from the ventral opening? Edited March 5, 2011 by John Southard Link to comment Share on other sites More sharing options...
westex11 Posted March 5, 2011 Author Share Posted March 5, 2011 John, Looks like that could be what it is look at it from a cross section. I was thinking it was some type of Megaladon (bivalve)? Link to comment Share on other sites More sharing options...
tracer Posted March 5, 2011 Share Posted March 5, 2011 well, i mean if we run with the concept of it being upper albian, then a cross-section through a rudist comes to mind. rudists take unusual and diverse forms. Link to comment Share on other sites More sharing options...
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