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Eosemionotus
Extinct genus of fishes From Wikipedia, the free encyclopedia
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Eosemionotus ("dawn Semionotus") is an extinct genus of prehistoric marine macrosemiid ray-finned fish from the Middle Triassic (Anisian to Ladinian). It was a speciose genus known from throughout Europe, including formations of the Muschelkalk.[1][2]
The following species are known:[2][3]
- E. ceresiensis Bürgin, 2004 - early Ladinian of Italy (Besano Formation)
- E. diskosomus López-Arbarello et al., 2019 - early Ladinian of Italy (Meride Formation) and Switzerland (Cassina Formation)
- E. minutus López-Arbarello et al., 2019 - early Ladinian of Italy (Meride Formation)
- E. ratumensis Diependaal et al. 2024 - mid-late Anisian of the Netherlands (Vossenveld Formation)[4]
- E. sceltrichensis López-Arbarello et al., 2019 - Ladinian of Switzerland (Meride Formation)
- E. vogeli (von Fritsch, 1906) - late Anisian of Germany (Heilbronn Formation) (=Allolepidotus vogeli von Fritsch, 1906)
In addition, indeterminate remains of Eosemionotus are known from Spain, Slovenia, and China.[2][5]
The Tethys Ocean appears to have been the center of diversification for the genus. The species E. vogeli appears to descend from a population that dispersed from the Tethys into the Germanic Basin prior to the late Anisian.[2]
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