Show simple item record C. en_US Ian en_US D. en_US A. en_US Robin C. en_US 2011-07-18T09:25:29Z 2011-07-18T09:25:29Z 2011-07-18 en_US
dc.identifier en_US
dc.identifier.citation Loriga , C , Boomer , I , Bassi , D , Fugagnoli , A & Whatley , R C 2011 , ' An Early Jurassic oligohaline ostracod assemblage within the marine carbonate platform sequence of the Venetian Prealps, NE Italy ' Palaeogeography, Palaeoclimatology, Palaeoecology , vol 166 , no. 3-4 , pp. 3-4 . , 10.1016/S0031-0182(00)00216-9 en_US
dc.identifier.other PURE: 169329 en_US
dc.identifier.other dspace: 2160/7149 en_US
dc.description.abstract Micropalaeontological investigation of one of a number of black shale horizons within the carbonate platform sediments of the Calcari Grigi Formation (Trento Platform, NE Italy) has yielded the first recorded oligohaline, early Jurassic, ostracod assemblage. The shale is dated as late Sinemurian on the basis of large benthic foraminiferal biostratigraphy in the sediments above and below. The shale is devoid of foraminifera and ammonites, which supports a non-marine context. Three previously unknown ostracod species are identified, however, the assemblage is dominated (>95%) by a single taxon which is erected as a new genus and species (Phraterfabanella tridentinensis Whatley and Boomer gen. et sp. nov.) which further supports the interpretation of a 'stressed' environment. The two remaining ostracod taxa are assigned to Klieana and Limnocythere both considered to represent non-marine or very low salinity conditions. This new genus includes probable members from the Rhaetian of Hungary and France as well as from the Liassic of France. The new genus is shown to be one of the earliest representatives of the Cytherideidae, a family which survives to the present and includes the modern pandemic, euryhaline species Cyprideis torosa. The discovery of such an assemblage within an otherwise marine sequence indicates temporary, physical isolation from marine influence. Sedimentological, faunal and geochemical evidence suggests that the organic rich shale may indicate high organic carbon supply via continental runoff in this tropical palaeogeographical setting. Resulting dysaerobia within the sediment would have created a particularly stressed environment. (C) 2001 Elsevier Science B.V. All rights reserved. en_US
dc.format.extent 2 en_US
dc.relation.ispartof Palaeogeography, Palaeoclimatology, Palaeoecology en_US
dc.subject Early Jurassic en_US
dc.subject Ostracoda en_US
dc.subject Oligohaline en_US
dc.subject Italy en_US
dc.title An Early Jurassic oligohaline ostracod assemblage within the marine carbonate platform sequence of the Venetian Prealps, NE Italy en_US
dc.contributor.pbl Centre for Glaciology en_US

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