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Showing results for tags 'crinoid'.
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From the album: Texas Pennsylvanian: Echinoderms (Crinoids and Echinoids)
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From the album: Texas Pennsylvanian: Echinoderms (Crinoids and Echinoids)
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Traumatocrinus from Guanling Biota of China: Aboral and Oral Calyx Surfaces
Biotalker posted a topic in General Fossil Discussion
There are a lot of crinoid fossils coming out of China these days, particularly this good sized and photogenic species. I believe it is called Traumatocrinus, perhaps named after a famed paleontologist who was killed during WWII. By far, most available fossils are a side view of the calyx and arms. I was interested in acquiring specimens that clearly show the echinoderm geometry on the aboral surface of the calyx. I was also interested in some view of the oral surface, which is usually hidden behind a blizzard of arms and branching pinnules. The crinoid has a pentaradial symmetry with two arms on each for a total of 10 arms. The green outline shows one of the five structures that make a five pointed "star". The oral surface is less visible. One can see plate-like structures in the center but I can't detect a mouth, hydropore or anus. -
Crinoid Calyx Paramphicrinus Texas Pennsylvanian
JamieLynn posted a gallery image in Member Collections
From the album: Texas Pennsylvanian: Echinoderms (Crinoids and Echinoids)
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From the album: Texas Pennsylvanian: Echinoderms (Crinoids and Echinoids)
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Crinoid Ethelocrinus tuberculatus Texas Pennsylvanian
JamieLynn posted a gallery image in Member Collections
From the album: Texas Pennsylvanian: Echinoderms (Crinoids and Echinoids)
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- ethelocrinus tuberculatus
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Crinoid Primibrachial axillary Texas Pennsylvanian
JamieLynn posted a gallery image in Member Collections
From the album: Texas Pennsylvanian: Echinoderms (Crinoids and Echinoids)
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Crinoid Primibrachial axillary Texas Pennsylvanian
JamieLynn posted a gallery image in Member Collections
From the album: Texas Pennsylvanian: Echinoderms (Crinoids and Echinoids)
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Crinoid Primibrachial axillary Texas Pennsylvanian
JamieLynn posted a gallery image in Member Collections
From the album: Texas Pennsylvanian: Echinoderms (Crinoids and Echinoids)
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From the album: Texas Pennsylvanian: Echinoderms (Crinoids and Echinoids)
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- cromyocrinoid
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From the album: Texas Pennsylvanian: Echinoderms (Crinoids and Echinoids)
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From the album: Texas Pennsylvanian: Echinoderms (Crinoids and Echinoids)
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From the album: Texas Pennsylvanian: Echinoderms (Crinoids and Echinoids)
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From the album: Texas Pennsylvanian: Echinoderms (Crinoids and Echinoids)
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From the album: Texas Pennsylvanian: Echinoderms (Crinoids and Echinoids)
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From the album: Texas Pennsylvanian: Echinoderms (Crinoids and Echinoids)
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From the album: Texas Pennsylvanian: Echinoderms (Crinoids and Echinoids)
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From the album: Texas Pennsylvanian: Echinoderms (Crinoids and Echinoids)
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From the album: Texas Pennsylvanian: Echinoderms (Crinoids and Echinoids)
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From the album: Texas Pennsylvanian: Echinoderms (Crinoids and Echinoids)
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From the album: Texas Pennsylvanian: Echinoderms (Crinoids and Echinoids)
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From the album: Texas Pennsylvanian: Echinoderms (Crinoids and Echinoids)
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Animal, vegetable, or mineral? Help with finds from Charmouth, Dorset, UK
citronkitten posted a topic in Fossil ID
Greetings, I have 4 pieces from Charmouth on the Jurassic Coast in Dorset that I am having trouble identifying. They were found during a fossil hunt led by the Charmouth Heritage Coast Center when they brought us to a stretch of beach between the Centre and Black Ven to the west. We would have been looking through the Black Ven Mudstone 'Shales with Beef' portion on the foreshore, which is from the Jurassic (no surprise, given the name of the area) period. Here are my best guesses: A = rolled bone, B = crinoid stem or coral, C = multiple bivalves and ammonite impression in matrix, D (the unlabelled one) = wood As always, corrections/confirmations/clarifications are much appreciated, as is your time for reading my post! -
Hello to all. Found this sample few years ago. Place of discovery: Ukraine, Donetsk region, Dobropolsky district. The age of it is the Kasimovian stage of the Carboniferous period (307 Ma). Have a nice day
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From the album: Texas Pennsylvanian: Echinoderms (Crinoids and Echinoids)
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