Acrogaster is a genus of fossil marine fish in the order Trachichthyiformes, known from the Late Cretaceous period. Species are known from Germany and Lebanon.
Species The following species are known: A. brevicostatus von der Marck, 1863 - Late Campanian of Germany A. daviesi Davis, 1887 - Late Santonian of Lebanon A. heckeli Pictet, 1850 - Late Santonian of Lebanon A. minutus von der Marck, 1863 - Late Campanian of Germany A. parvus Agassiz, 1839 - Late Campanian of Germany The former species A. anceps and A. dayi are now placed in Lissoberyx.
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