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Showing results for tags 'cidarid'.
From the album: Texas Echinoids, ERoseUpdate: Since I originally posted this image I now have fairly positive identifications for three of these and a good guess on the fourth. From top to bottom: The knurled large spine is Paracidaris? texanus (Whitney & Kellum) one of two known cidarids in the formation; The second is Pseudodiadema aguileria (Maldonado) and is recognized by its triangular cross section; The third is the unknown. It looks like spines on some Goniopygus but there are no large Goniopygus in this strata. It is more likely a scrobicular spine (https://www.nhm.ac.uk/our-science/data/echinoid-directory/taxa/glos
So I had a few hours off the other day and decided to hit a favorite spot in the Glen Rose Formation. The Glen Rose is Lower Cretaceous (Albian) and can be very fossiliferous. For those familiar with this formation the particular layer I was hunting is near the top of the Lower Member in what is known as the "Salenia texana" zone. As the name implies it is abundant with the echinoid Leptosalenia texana. But it also produces another handful of echinoids, some common and some rare. I was hunting(hoping) for the rare ones... Now let me tell you it has been a long hard summer and this week was
A recent acquisition that I bought just because it's beautiful. Impressions of cidarids crop up quite often in Cretaceous flint but I've never been lucky enough to find one (and I live in the wrong area). Probably Temnocidaris sp., Upper Cretaceous, Santonian, Kent coast, southern England. Test fragment 13mm across
I found this little jewel a while back, but never found out what species it is. Can anyone tell me what genus species it is? This is a close up of an ambulacral and pore area. I don’t think I can get much better on the close up picture quality. I do have a number of pics from other angles if needed. Thanks in advance for your input.