Reassessment of vertebrate ichnotaxa from the Upper Carboniferous ‘Fern Ledges’, Lancaster Formation, Saint John, New Brunswick, Canada

Atlantic Geology

Spencer G. Lucas¹  Matthew R. Stimson²  Randall F. Miller² 

[1] New Mexico Museum of Natural History and Science;Geology and Palaeontology Section, Natural Science Department, New Brunswick Museum

关键词: Paleontology;    ichnofossil;    tetrapod;    Limnopus;   

DOI  :  

学科分类：地质学

来源: Atlantic Geoscience Society

【 摘 要 】

Vertebrate ichnotaxa described by George Frederic Matthew in 1910 from the Upper Carboniferous (Lower Pennsylvanian) ‘Fern Ledges’ of Saint John, New Brunswick, were dismissed as dubious trackways by previous authors. Thus, three new ichnospecies Matthew described appeared in the 1975Treatise on Invertebrate Paleontologyas “unrecognized or unrecognizable” and were mostly forgotten by vertebrate ichnologists. These traces includeHylopus(?)variabilis, Nanopus(?)vetustusandBipezia bilobata . One ichnospecies,Hylopus(?)variabilis , here is retained as a valid tetrapod footprint ichnotaxon and reassigned to the ichnogenusLimnopusas a new combination, together with other poorly preserved specimens Matthew labeled, but never described.Nanopus(?)vetustusandBipezia bilobatanamed by Matthew in the same paper, have been reexamined and remain as nomina dubia. 

【 授权许可】

Unknown