Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5788008 | Cretaceous Research | 2017 | 21 Pages |
Abstract
Amiid remains from the Upper Cretaceous (Turonian-Santonian) Adamantina Formation, Bauru Basin, Southeastern Brazil are described. The material is known only from fragmented isolated jaw bones (maxilla and dentary), a vertebral centrum, and isolated teeth and represents the first halecomorph described from this stratigraphical unit. Characters of the maxilla and the shape of the teeth, permit referral to the subfamily Vidalaminae. The Adamantina material differs from material described from the slightly younger MarÃlia Formation (Maastrichthian) of the same Bauru Basin, by the presence of longitudinal ridges on the surface of the maxilla as well as by tooth sockets of equal size. These two records are the unique indisputable occurrences of freshwater vidalamins and confirm the presence of this clade within the incipient Neotropical ichthyofauna.
Keywords
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Palaeontology
Authors
Paulo M. Brito, William R. Nava, Agustin G. Martinelli,