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Showing results for tags 'spinosus'.
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Spinosaurus caudal vertebra from Kem Kem Beds
Izan posted a topic in Is It Real? How to Recognize Fossil Fabrications
A year ago I bought this spinosaurus vertebra from the Kem Kem Beds at a good price. I don't have doubt that the vertebra is real, I am concerned that there are some composite parts. If the vertebra were 100% original, would it be possible to know if it is from an adult or a juvenile? The size of the vertebra is 10cm long x 13cm tall.- 1 reply
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- spinosaurus vertebra
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Taxonomy from Fossilworks.org. Bannikov 2008 notes on p. 66 that "examination of the lectotype of Apogon spinosus resulted in the conclusion that the species name spinosus is a synonym of Acropoma lepidotum (syn. nov.)." For grammatical reasons, the species name is Acropoma lepidotum and not Acropoma lepidotus, as in Sorbini 1975. Corrected diagnosis for Acropoma lepidotum from Sorbini 1975, p. 178 (translated from Italian by oilshale): "Body moderately elongate, two separate dorsal fins, ventral margin arcuate. Teeth with slightly pointed apex on jaws and vomer, numerous pharyngeal teeth with rounded apex and caniniform. Posterior margin of preoperculum serrated, including angle. Operculum with two flat spines, subperculum serrated at upper margin. Branchiostegal rays long and thin. Spiniform rays of dorsalis thin, third and fourth rays longest, first and second spiniform rays of anal short, third long. Tail slightly forked. Scales large, weakly ctenoid. Line drawing from Sorbini 1975, p. 179: Identified by oilshale using Sorbini 1975. References: L. Agassiz (1836) Recherches Sur Les Poissons Fossiles. Tome IV (livr. 6). Imprimerie de Petitpierre, Neuchatel 53-108. L. SORBINI 1975 (1974). Studio paleontologico di Acropoma lepidotus (Agassiz). Pisces, Acropomidae. Miscellanea Paleontologica. Studi e Ricerche sui Giacimenti Terziari di Bolca, 2: 177-203. Bannikov A.F. (2005) New cardinalfishes (Perciformes, Apogonidae) from the Eocene of Bolca, northern Italy // Studi ric. giacim. terz. Bolca. Verona. V. XI. p. 119-140. Giuseppe Marramà, Alexandre F. Bannikov, James C. Tyler, Roberto Zorzin, Giorgio Carnevale (2016) Controlled excavations in the Pesciara and Monte Postale sites provide new insights about the palaeoecology and taphonomy of the fish assemblages of the Eocene Bolca Konservat-Lagerstätte, Italy. Palaeogeography, Palaeoclimatology, Palaeoecology 454 (2016) 228–245.