Belonostomus

Belonostomus is an extinct genus of prehistoric ray-finned fish in the order Aspidorhynchiformes. Fossils have been found in marine areas, although some species are known from freshwater habitats.

Belonostomus kochii

Usually, it fed on plankton or other tiny fish, but one fossil was found devouring a Homoeosaurus as stomach contents.

Description

Belonostomus, like all aspidorhyncheans, has a pointy rostrum. However, it is thinner compared to other genera like the almost identical Aspidorhynchus. It possesses a long body.

Gallery

Belonostomus muensteri

Belonostomus tenuirostris

References

1. Bryant, Laurie J. (1987). "Belonostomus (Teleostei: Aspidorhynchidae) from the Late Paleocene of North Dakota" (PDF). PaleoBios. Museum of Paleontology, University of California Berkeley.