Early Miocene Mollusca from McMurdo Sound, Antarctica (ANDRILL 2A drill core), with a review of Antarctic Oligocene and Neogene Pectinidae (Bivalvia). (10th September 2013)

• Record Type: Journal Article
• Authors: Beu, Alan; Taviani, Marco; Sigwart, Julia
• Is Part Of: Palaeontology. Volume 57:Part 2(2014:Mar.)
• Page Start: 299
• Page End: 342
• Publication Date: 2013-09-10
• Subjects: Paleontology -- Periodicals; 560
• DOI: 10.1111/pala.12067
• Languages: English
• ISSNs: 0031-0239

Abstract

<abstract abstract-type="main" id="pala12067-abs-0001"> <title>Abstract</title> <p> <italic>Retrotapes andrillorum</italic> sp. nov., <italic>Hiatella</italic> cf. <italic>arctica</italic> (Linnaeus, 1767), ?<italic>Yoldia</italic> sp. (internal mould) and six taxa of Pectinidae are reported from the Burdigalian section of the ANDRILL 2A core, drilled in McMurdo Sound, Ross Sea. The pectinids are <italic>Adamussium</italic> cf. <italic>jonkersi </italic>Quaglio <italic>et al</italic>., 2010, <italic>Antarctipecten</italic> gen. nov. <italic>alanbeui</italic> (Jonkers, 2003), <italic>Austrochlamys forticosta</italic> sp. nov., <italic>Austrochlamys</italic> cf. <italic>marisrossensis </italic>Jonkers, 2003, <italic>Ruthipecten</italic> gen. nov., sp. nov. (not named) and a fragmentary specimen representing an unnamed genus and species. In a revision of Antarctic Pectinidae, <italic>Austrochlamys </italic>Jonkers, 2003, <italic>Ruthipecten</italic> gen. nov. (proposed for <italic>Chlamys</italic> (<italic>Zygochlamys</italic>) <italic>tuftsensis </italic>Turner, 1967, reported only from Wright Valley and the Vestfold Hills, not present in ANDRILL 2A), <italic>Leoclunipecten</italic> gen. nov. (proposed for <italic>Austrochlamys gazdzickii </italic>Jonkers, 2003, reported only from Oligocene rocks of King George Island, not present in ANDRILL 2A) and the unnamed genus in ANDRILL 2A are assigned to subfamily Chlamydinae, tribe Chlamydini, whereas <italic>Adamussium </italic>Thiele, 1934 and <italic>Antarctipecten</italic> gen. nov. are assigned to subfamily Palliolinae, tribe Adamussiini. The diverse Pectinidae in ANDRILL 2A suggest sea temperatures roughly 5°C warmer than at present in the Ross Sea during Early Miocene time.</p> </abstract>