Where: Charles County, Maryland (38.5° N, 76.7° W: paleocoordinates 38.7° N, 73.8° W)
• coordinate estimated from map
• local area-level geographic resolution
When: Calvert Beach Member (Calvert Formation), Serravallian (13.8 - 11.6 Ma)
• early late Barstovian; 14.9-14.8 Ma AEO date
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•Zones 14-16A are regarded as Serravallian in age.
Environment/lithology: coastal; lithology not reported
Size class: macrofossils
Preservation: original phosphate
Primary reference: S. L. Mitchill. 1818. Observations on the geology of North America. In G. Cuvier (ed.), Essay on the Theory of the Earth 319-424 [M. Uhen/M. Uhen/J. Alroy]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 57782: authorized by Mark Uhen, entered by Mark Uhen on 02.01.2006, edited by John Alroy
Creative Commons license: CC BY (attribution)
Taxonomic list
Gastropoda | |
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Bivalvia | |
"Pecten (Pseudamusium) cerinus" = Eburneopecten cerinus6
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Chondrichthyes | |
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"Aetobatis arcuatus" = Aetobatus irregularis6
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"Raja dux" = Trygon dux3
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"Sphyrna prisca" = Cestracion prisca6
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"Notidanus primigenius" = Notorhynchus primigenius3
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"Galeocerdo triqueter" = Physodon triqueter6, "Galeocerdo contortus" = Physogaleus contortus6, "Carcharias (Prionodon) egertoni" = Prionodon egertoni6
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"Carcharias magna" = Sphyrna magna6, "Sphyrna magna" = Sphyrna magna4, "Carcharias laevissimus" = Sphyrna laevissima6
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"Odontaspis cuspidata" = Araloselachus cuspidatus6
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Mammalia | |
"Squalodon protervus" = Cynorca proterva6
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Cetophis heteroclitus6, Rhabdosteus latiradix5, Ixacanthus coelospondylus6, "Priscodelphinus lacertosus" = Tretosphys lacertosus6, "Priscodelphinus gabbii" = Tretosphys gabbii6, "Priscodelphinus ruschenbergeri" = Tretosphys ruschenbergeri6, "Ixacanthus conradi" = Priscodelphinus conradi6, "Ixacanthus stenus" = Priscodelphinus stenus6, "Ixacanthus atropius" = Priscodelphinus atropius6
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Reptilia | |
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"Thecachampsa sicaria n. sp." = Thecachampsa sericodon7
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Actinopteri | |
"Sphyraena speciosa" = Sphyraenodus speciosus6
"Sphyraena speciosa" = Sphyraenodus speciosus6 Leidy 1856 |