Biology:Concavotectum
Concavotectum is an extinct genus of freshwater plethodid ray-finned fish that lived during the Cenomanian in Morocco and possibly Egypt.[1][2] It was discovered and named in 2008 and is known from a single well preserved hand-sized skull and a few isolated vertebrae discovered in the Kem Kem Group (Gara Sbaa Formation).[1][3][4] The type species, C. moroccensis, was named in 2008[3] and described in 2010.[1]
A possible second and third specimen, found in the Baharija Formation, consists of a 2 skulls and several vertebra, which were discovered in 1916 and were all destroyed on the night of 24-25 April 1944, during the Bombing of Munich in World War II. They are currently the holotype of the possible synonym Paranogmius.[5] Some differences are evident between the surviving illustrations of Paranogmius and the skull of Concavotectum, so they are tentatively considered distinct genera, and a new genus is still necessary given the destruction of the former type specimens.[3]

References
- ↑ 1.0 1.1 1.2 Cavin L, Tong H, Boudad L, Meister C, Piuz A, Tabouelle J, et al. (2010) Vertebrate assemblages from the early Late Cretaceous of southeastern Morocco: An overview. Journal of African Earth Sciences Geological Society of Africa Presidential Review No 16 57: 391–412.
- ↑ "Crossognathiformes". Paleobiology Database. https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=35416.
- ↑ 3.0 3.1 3.2 Mesozoic Fishes 4 (2008) - Homology and Phylogeny, Chapter: A new tselfatiiform teleost from the Upper Cretaceous (Cenomanian) of the Kem Kem beds, Southern Morocco, Publisher: Verlag Dr. F. Pfeil, Editors: Gloria Arratia, Hasn-Peter Schiultze, Mark V. H. Wilson, pp.199-216
- ↑ Ibrahim, N.; Sereno, P.C.; Varricchio, D.J.; Martill, D.M.; Dutheil, D.B.; Unwin, D.M.; Baidder, L.; Larsson, H.C.E. et al. (2020). "Geology and paleontology of the Upper Cretaceous Kem Kem Group of eastern Morocco". ZooKeys (928): 1–216. doi:10.3897/zookeys.928.47517. PMID 32362741.
- ↑ Weiler, W. (1935). Ergebnisse der Forschungsreisen Prof. Stromers in den Wusten Aegyptens. II. Wirbeltierreste der Baharije-Stufe (unterstes Cenoman). 16. Neue Untersuchungen an den Fischresten. Abhandlungen der Bayerischen Akademie der Wissenschaften, Mathematisch-Naturwissenschaftliche Abteilung, 32, pls-1.
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