Redescription of Santanichthys diasii (Otophysi, Characiformes) from the Albian of the Santana Formation and Comments on Its Implications for Otophysan Relationships

This dataset contains the digitized treatments in Plazi based on the original journal article FILLEUL, ARNAUD, MAISEY, JOHN G. (2004): Redescription of Santanichthys diasii (Otophysi, Characiformes) from the Albian of the Santana Formation and Comments on Its Implications for Otophysan Relationships. American Museum Novitates 3455 (1): 1-22, DOI: 10.1206/0003-0082(2004)455<0001:ROSDOC>2.0.CO;2, URL: bioone.org/perlserv/?request=get-abstract&doi=10.1206%2F0003-0082(2004)455%3C0001%3AROSDOC%3E2.0.CO%3B2 ABSTRACT A detailed redescription of Santanichthys diasii is presented, based on several new acidprepared and very well­preserved specimens.

S. diasii has a complete Weberian apparatus and is at present the earliest otophysan fish known (early Cretaceous, Albian). In addition, this fish displays at least one synapomorphy of modern characiforms (large and globular lagenar capsules that extend well lateral to the cranium) and we consequently suggest that it is a stem characiform. If this is correct, it represents a significant temporal extension for characiforms.