Geodiversitas | |
A diverse Eocene fish scale assemblage from Seymour Island, Antarctica | |
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
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RO201912090770105ZK.pdf | 10401KB | download |