Leptorrhamphus

Leptorrhamphus Temporal range: Mid-Late Miocene ~11.6–7.2 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Clade:	Archosauromorpha
Clade:	Archosauriformes
Order:	Crocodilia
Superfamily:	Gavialoidea
Genus:	†Leptorrhamphus Ambrosetti, 1890
Species
Leptorrhamphus entrerrianus Ambrosetti, 1890 (type)

Leptorrhamphus is an extinct monospecific genus of gavialoid crocodilian that lived during the Middle to Late Miocene in what is now Argentina. Fossils have been found in the formation then named Entrerriana Formation, in modern literature referred to as the Ituzaingó Formation.^[1] The type species is L. entrerrianus, named after the formation in 1890.^[2] It is now thought to be a nomen dubium.

References

1. Barrancas del Rio Parana at Fossilworks.org
2. Camp, C. L., Taylor, D. N. and Welles, S. P., eds. (1942) Bibliography of Fossil Vertebrates 1934-1938. Geological Society of America Special Papers, Number 42.