Show simple item record

dc.contributor.author Harper, E. M.
dc.contributor.author Palmer, T. J.
dc.contributor.author Hudson, J. D.
dc.date.accessioned 2011-09-12T10:07:14Z
dc.date.available 2011-09-12T10:07:14Z
dc.date.issued 2011-09-12
dc.identifier.citation Harper , E M , Palmer , T J & Hudson , J D 2011 , ' The Middle Jurassic bivalve 'Cuspidaria' ibbetsoni: A corbulid not a septibranch ' Palaeontology , pp. 759-769 . en
dc.identifier.issn 1475-4983
dc.identifier.other PURE: 170669
dc.identifier.other dspace: 2160/7570
dc.identifier.uri http://hdl.handle.net/2160/7570
dc.description Harper, E. M., Palmer, T. J., Hudson, J. D. (2002). The Middle Jurassic bivalve 'Cuspidaria' ibbetsoni: A corbulid not a septibranch. Palaeontology, 45, 759-769 en
dc.description.abstract A distinctive shallow-burrowing bivalve with an elongate rostrum, common in the British Middle Jurassic, is frequently referred to as Cuspidaria ibbetsoni (Morris, 1853) and as such is recognised as one of the earliest members of the anomalodesmatan family Cuspidariidae. Since modern cuspidariids are highly specialised bivalves and are voracious carnivores in the deep sea, whereas C. ibbetsoni is prevalent in brackish-water facies, questions have been raised over its true affinities. We have investigated new and pre-existing material of C ibbetsoni, and have concentrated on shell microstructure, morphology, and musculature. Our findings suggest that the inequivalve shell is composed of crossed-lamellar aragonite rather than either homogeneous or prismato-nacreous structures. It also lacks the complex musculature associated with the raptorial siphon of the predatory septibranchs. These characters suggest that C. ibbetsoni should more properly be placed within the myoid family Corbulidae and a new genus, Rostrocorbula, has been erected to accommodate it. It has also been necessary to establish a neotype. The significance of this familial redesignation to our understanding of the evolution of carnivory within the Bivalvia is discussed. en
dc.format.extent 11 en
dc.language.iso eng
dc.relation.ispartof Palaeontology en
dc.title The Middle Jurassic bivalve 'Cuspidaria' ibbetsoni: A corbulid not a septibranch en
dc.type Text en
dc.type.publicationtype Article (Journal) en
dc.contributor.institution Institute of Geography & Earth Sciences en
dc.contributor.institution Aberystwyth University en
dc.description.status Peer reviewed en


Files in this item

Files Size Format View

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record

Search Cadair


Advanced Search

Browse

Statistics