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Showing results for tags 'ischyodus'.
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From the album: Texas Cenomanian (Cretaceous)
Chimaera (Ratfish) tooth - perhaps Ischyodus sp. Cenomanian Texas -
From the album: Ozan Formation
Ischyodus sp., NSR Campanian, Cretaceous Mar, 2023 Not a common find for the NSR. -
Von Mayer originally described this chimaera under the name Ischyodus avitus. Elasmodectes avitus, a cartilaginous fish, is conspicuous for its sparsely ossified skeleton. There is a nuchal spine behind the head; the dorsal fin begins just behind the nuchal spine and extends to the tail. Elasmodectes seems to have possessed a skin or only very thin scales, which seems to be almost impossible to preserve. The Skull is presenting its dosal view. Reverence: WOODWARD, A.S. (1891) Catalogue of the fossil fishes in the British Museum (Natural History). Part II. containing the Elasmobranchii (Acanthodii). Holocephali, Ichthyodorulites, Ostracodermi, Dipnoi, and Teleostomi (Crossopterygii and chondrostean Actinopterygii). XLIV + 567 pp. (Taylor & Francis), London. SCHWEIZER, R. (1964) Die Elasmobranchier und Holocephalen aus den Nusplinger Plattenkalken. Palaeontographica, Abt. A, 123 (123): 58–110, 15 fig., pl. 7–12. POPOV, E.V. & DUFFIN, C. & TISCHLINGER, H. & ATUCHIN, A. (2013) Reconstructions of the German Plattenkalk (Late Jurassic) chimaeroid fishes (Holocephali, Chimaeroidei). Abstract. In: SCHWARZ, C. & KRIWET, J. (editors): 6th International Meeting on Mesozoic Fishes – Diversification and Diversity Patterns, Vienna, Austria August 4th–10th, 2013: 56 E. Popov (2014): A revision of the Late Mesozoic chimaeroid genus Elasmodectes (Holocephali, Chimaeroidei) [Poster] Conference: 74th Annual Meeting, Society of Vertebrate Paleontology, November 5-8, 2014, Berlin, Germany At: Estrel Berlin, Germany
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Me and my brother, shajzer64, both ended up having a day off on the 26th so we ended up heading down to the Cretaceous steams of Monmouth County. It was cold - really cold, but the steams treated us well. I found a large Mosasaur tooth (1.4 inch) with really nice coloration; it is red, yellow, orange and black, a nice ghost shrimp burrow, and my best Ischyodus (ratfish) specimen to date. Shane came up with a nice Xiphactinus tooth, a few nice gastropods, and a very large piece of fossil bone we are going to take to the museum in a few weeks. Overall, it was a tough trip but I'm glad we went for it! Cheers, Frank
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