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Showing results for tags 'dermal denticles'.
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Not sure where to post this request, so change as appropriate. The Maryland Natural History Society will be holding its annual Shark Fest in August. I volunteer there. As part of our educational displays, a skate skeleton would be useful for folks to see, feel the cartilage and to see the protective dermal denticles. I have looked on the internet but have not come up with with any. I looked on taxidermy sites and online. I wondered if any TFF members may have or can refer me to a person or site where such a skeleton or partial piece like a tail section would be available. Thanks for any help a
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Mysterious event nearly wiped out sharks 19 million years ago By Yasemin Saplakoglu, Live Science, June 3, 2021 "It's unknown whether the ancient sharks died off in a single day, weeks, years or even thousands of years." The paper is: Elizabeth C. Sibert and Leah D. Rubin, 2021 An early Miocene extinction in pelagic sharks Science 04 Jun 2021: Vol. 372, Issue 6546, pp. 1105-1107 DOI: 10.1126/science.aaz3549 Yours, Paul H.
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- extinction
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Shark skin with placoid scales/Ray skin with dermal denticles
MarcoSr posted a topic in General Fossil Discussion
I just received recently from @Coco six pieces of shark and ray skin (smallest 3.5 inches by 2.5 inches, largest 14 inches by 3 inches) shown in the below picture. There are four pieces of skin from the sharks Mustelus asterias (Starry Smoothhound), Centrophorus squamosus (Leafscale Gulper Shark), Galeorhinus galeus (School shark) and Mustelus mustelus (Smoothhound Shark) and two pieces of skin from the rays (skates) Dipturus oxyrinchus (Sharpnose Skate) and Leucoraja naevus (Cuckoo Skate). If you search fine matrix, you can find fossil shark placoid sca- 26 replies
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- extant shark and ray skin
- dermal denticles
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Name: Petrodus patelliformis (dermal denticles)Age: CarboniferousLocation: Steeplehouse quarry, Wirksworth, Derbyshire, United Kingdom I haven’t got around to separating or giving it my best shot to an i.d. on the associated crinoids as yet, but I thought you would like to see my work in progress. If you would like to view the PDF below it makes for a very interesting read. Steeplehouse quarry p.s. the scale bar is in mm
