Serenoichthys
| Serenoichthys Temporal range:
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|---|---|
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| Fossil specimen (scale bar 1 cm) | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Polypteriformes |
| Family: | Polypteridae |
| Genus: | †Serenoichthys D. B. Dutheil, 1999[1] |
| Species: | †S. kemkemensis
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| Binomial name | |
| †Serenoichthys kemkemensis D. B. Dutheil, 1999[1]
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Serenoichthys is an extinct genus of small bichir from the Late Cretaceous (Cenomanian) of southeastern Morocco.[1] The genus is monotypic, the type and only species being Serenoichthys kemkemensis.[2] Only known at first from postcranial skeletons, complete specimens were later discovered.[3]
Etymology
[edit]The generic name Serenoichthys (Sereno's fish) was given after the leader of the team responsible for the discovery, Paul C. Sereno. The species name, kemkemensis, refers to the Kem Kem locality in Morocco where the fossils were discovered.[1]
Description
[edit]Serenoichthys was comparatively small, with the fossils discovered reaching at most 5 cm (2.0 in) in length — in comparaison, the contemporary polypterid Bawitius could reach up to 300 cm (9.8 ft).[3] Its body was relatively short and tall compared to modern polypterids, closer to the original actinopterygian body plan.[1]
Like modern-day polypterids, Serenoichthys possessed a dorsal fin divided into a series of independent finlets each supported by a spine, a defining synapomorphy of the Cladistia.[1]
References
[edit]- ^ a b c d e f Dutheil, Didier (June 1999). "The first articulated fossil cladistian: Serenoichthys Kemkemensis, gen. et sp. nov., from the Cretaceous of Morocco". Journal of Vertebrate Paleontology. 19 (2): 243–246. Bibcode:1999JVPal..19..243D. doi:10.1080/02724634.1999.10011138. Retrieved 18 September 2022.
- ^ "Fossilworks: Serenoichthys". Archived from the original on 2021-12-12. Retrieved 2022-09-18.
- ^ a b Ibrahim, Nizar; Paul C., Sereno (21 April 2020). "Geology and paleontology of the Upper Cretaceous Kem Kem Group of eastern Morocco". ZooKeys (928): 73–75. doi:10.3897/zookeys.928.47517. PMC 7188693. PMID 32362741. Retrieved 18 September 2022.
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