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Davidharwoodia megaspina gen. et sp. nov. (Corethrales), a new fossil marine diatom genus from Mors, Jutland (early Eocene)

Abe, Kenta ; Jordan, Richard W.

Diatom research, 2023-01, Vol.38 (1), p.13-20 [Periódico revisado por pares]

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Título:
Davidharwoodia megaspina gen. et sp. nov. (Corethrales), a new fossil marine diatom genus from Mors, Jutland (early Eocene)
Autor: Abe, Kenta ; Jordan, Richard W.
Assuntos: articulated spines ; Corethrales ; Corethron ; diatomite ; Diatomites ; Diatoms ; Eocene ; evolution ; Fossils ; Fur Formation ; heterovalvy ; New species ; Protective equipment ; Sockets ; Spine ; Spines
É parte de: Diatom research, 2023-01, Vol.38 (1), p.13-20
Descrição: A taxonomic survey of the early Eocene diatomites of Mors has revealed a new member of the Corethrales, Davidharwoodia megaspina gen. et sp. nov., which is the first fossil Corethron-like diatom to possess backward-pointing spines. The new species is presumably heterovalvate, with a rounded pyramidal Type 1 valve bearing a single huge leaf-shaped spine (and corresponding large socket) in addition to the narrower spines, and a more elongate helmet-shaped Type 2 valve possessing spines of a different design and twice as many sockets of equal size. The genus can be distinguished from Micrampulla by lacking the large inflated structures emanating from the dome, from Praecorethron by a narrower marginal area and vertically placed sockets, and from Corethron by lacking hooked spines.
Editor: Nottingham: Taylor & Francis
Idioma: Inglês;Francês;Alemão;Espanhol

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