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Provannid and provannid-like gastropods from the Late Cretaceous cold seeps of Hokkaido (Japan) and the fossil record of the Provannidae (Gastropoda: Abyssochrysoidea)
Kaim, A.; Jenkins, R.G.; Warén, A. (2008). Provannid and provannid-like gastropods from the Late Cretaceous cold seeps of Hokkaido (Japan) and the fossil record of the Provannidae (Gastropoda: Abyssochrysoidea). Zool. J. Linn. Soc. 154(3): 421-436. https://dx.doi.org/10.1111/j.1096-3642.2008.00431.x
In: Zoological Journal of the Linnean Society. Academic Press: London. ISSN 0024-4082; e-ISSN 1096-3642, more
Peer reviewed article  

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Keywords
    Abyssochrysoidea Tomlin, 1927 [WoRMS]; Hokkaidoconchidae
    INW, Japan, Hokkaido [Marine Regions]
    Marine/Coastal

Authors  Top 
  • Kaim, A.
  • Jenkins, R.G.
  • Warén, A.

Abstract
    A fauna of provannid and provannid-like shells is described from Upper Cretaceous seep carbonates in Hokkaido, Japan. We describe two new provannid species, Provanna tappuensis sp. nov. and Desbruyeresia kanajirisawensis sp. nov., with preserved protoconchs of unquestionable provannid type with decollate apex. This material confirms the occurrence of Provannidae as early as the Middle Cenomanian. We also describe H. hikidai sp. nov. and H. tanabei sp. nov.. Hokkaidoconchidae are possibly related to the Provannidae, judging from a similar, but not decollate larval shell, although the juvenile teleoconch whorls differ in being of a general cerithimorph appearance and the details of the aperture are unknown. Furthermore, we review the published fossil record of Provannidae and Abyssochrysidae, and we consider that in those older than the Eocene, there is no evidence preserved that unequivocally supports a position there. The Jurassic Acanthostrophia acanthica from Italy seems to be the oldest known record of Abyssochrysidae, and the most reliable occurrence of the family, older than from the Miocene. Other fossil, pre-Miocene species that have been classified in the Abyssochryssidae are provisionally referred to Hokkaidoconchidae.

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