First occurrence of Distobatus Werner, 1989 (Elasmobranchii: Hybodontiformes) in the middle Cretaceous (Albian–Cenomanian) of Brazil: Taxonomic and biogeographical implications

IF 1.9 3区地球科学 Q1 GEOLOGY

Cretaceous Research Pub Date : 2025-03-04 DOI:10.1016/j.cretres.2025.106119

Paulo M. Brito , Ingrid M. Veiga , Didier B. Dutheil , Lilian P. Bergqvist

引用次数: 0

Abstract

Fossil teeth from the middle Cretaceous (Albian–Cenomanian) Açu Formation of the Potiguar Basin, Northeastern Brazil, previously described as Tribodus sp., are redescribed as a new species of the hybodontiform shark genus Distobatus Werner, 1989. The new taxon, Distobatus potiguarense sp. nov., is based on crown ornamentation, formed by delicate parallel ridges in the form of waves that follow each other, in occlusal view. The presence of Distobatus in the Açu Formation represents the westernmost distribution of this taxon and confirms the taxonomic and environmental similarity between the faunas found in North Africa and Northeastern Brazil. The new species confirms the existence of Distobatidae in South America immediately after the separation of the northern part of Gondwana.

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来源期刊

Cretaceous Research 地学-地质学

CiteScore

4.10

自引率

19.00%

发文量

235

审稿时长

12 weeks

期刊介绍： Cretaceous Research provides a forum for the rapid publication of research on all aspects of the Cretaceous Period, including its boundaries with the Jurassic and Palaeogene. Authoritative papers reporting detailed investigations of Cretaceous stratigraphy and palaeontology, studies of regional geology, and reviews of recently published books are complemented by short communications of significant new findings. Papers submitted to Cretaceous Research should place the research in a broad context, with emphasis placed towards our better understanding of the Cretaceous, that are therefore of interest to the diverse, international readership of the journal. Full length papers that focus solely on a local theme or area will not be accepted for publication; authors of short communications are encouraged to discuss how their findings are of relevance to the Cretaceous on a broad scale. Research Areas include: • Regional geology • Stratigraphy and palaeontology • Palaeobiology • Palaeobiogeography • Palaeoceanography • Palaeoclimatology • Evolutionary Palaeoecology • Geochronology • Global events.