A diverse Eocene fish scale assemblage from Seymour Island, Antarctica

Geodiversitas

Radek Vodrážka¹  Tomáš Přikryl¹ 

关键词: Teleostei;    scales;    lepidology;    Eocene;    La Meseta Formation;    Antarctica;    Teleostei;    écailles;    lépidologie;    Éocene;    Formation de La Meseta;    Antarctique;   

DOI  :  10.5252/g2012n4a11

学科分类：生物科学（综合）

来源: Museum National d Histoire Naturelle

【 摘 要 】

AcollectionoffishscalesfromtheLaMesetaFormation(Paleogene,Eocene;SeymourIsland,Antarctica)hasbeenstudied,permittingthecharacterisationoffiveclearlydistinguishablemorphotypes.Threemorphotypesarecomparabletoscalesofrecenttrachichthyids,clupeids,andgadids.Theothertwomorphotypesarerepresentedonlybytwopoorlypreservedspecimens;however,theyprobablypertaintoperciformandpleuronectiformfishes.ThelatterisanewrecordfortheLaMesetaFormation.Themixedcompositionofthefishscaleassemblagereflectssubstantialredistributionoffishremainswithinahigh-energy,shallowmarineenvironment.Scaleswererecoveredfromcalcareoussandstoneconcretions,whichaccountsfortheiroverallgoodpreservation.ThisisthemostdiversifiedassemblageoffishscalesyetreportedfromthefossilrecordofAntarctica.

【 授权许可】

Unknown