Where: Charles County, Maryland (38.5° N, 76.7° W: paleocoordinates 38.7° N, 73.9° W)
• coordinate estimated from map
When: Calvert Beach Member (Calvert Formation), Serravallian (13.8 - 11.6 Ma)
• Cope refers to the beds as "Yorktown" but they are much more likely to be Calvert Formation since the Yorktown is not thought to crop out in Maryland, DN5. Zones 14-16A are regarded as Serravallian in age.
•
•Age and Member after Weems and Edwards (2007).
• bed-level stratigraphic resolution
Environment/lithology: offshore shelf; lithology not reported
Size classes: macrofossils, mesofossils
Preservation: original phosphate
Primary reference: E. D. Cope. 1867. An addition to the vertebrate fauna of the Miocene period, with a synopsis of the extinct Cetacea of the United States. Proceedings of the Academy of Natural Sciences of Philadelphia 19(4):138-157 [M. Uhen/M. Uhen/M. Carrano]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 55396: authorized by Mark Uhen, entered by Mark Uhen on 14.10.2005, edited by Austin Hendy
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
Anthozoa | |
"Madrepora palmata" = Acropora palmata
"Madrepora palmata" = Acropora palmata Lamarck 1816 stony coral | |
Thecostraca | |
Balanus vulcanellus n. sp., "Balanus proteus" = Chesaconcavus proteus
Balanus vulcanellus n. sp. barnacle
"Balanus proteus" = Chesaconcavus proteus Conrad 1834 barnacle | |
Bivalvia | |
"Lucina contracta" = Lucinoma contracta, "Lucina americana" = Divalinga quadrisulcata, "Lucina foremani" = Stewartia foremani
"Lucina contracta" = Lucinoma contracta Say 1824 clam
"Lucina americana" = Divalinga quadrisulcata d'Orbigny 1846 clam
"Lucina foremani" = Stewartia foremani Conrad 1841 clam | |
Corbula pectorosa n. sp., "Corbula idonea" = Bicorbula idonea
Corbula pectorosa n. sp. clam
"Corbula idonea" = Bicorbula idonea Conrad 1833 clam | |
Dosinia acetabulum, Mercenaria staminea, Mercenaria cuneata n. sp., "Dione staminaea" = Hysteroconcha, "Dione marylandica" = Hysteroconcha
Dosinia acetabulum Conrad 1832 venus clam
Mercenaria staminea quahog
Mercenaria cuneata n. sp. Conrad 1869 quahog
"Dione staminaea" = Hysteroconcha venus clam
"Dione marylandica" = Hysteroconcha venus clam | |
Chama corticosa jewel box | |
Isocardia markoii, "Isocardia fraterna" = Glossus fraterna
Isocardia markoii clam
"Isocardia fraterna" = Glossus fraterna Say 1824 clam | |
"Metis biplicata" = Florimetis biplicata
"Metis biplicata" = Florimetis biplicata Conrad 1834 tellin clam | |
"Cardium laqueatum" = Chesacardium laqueatum
"Cardium laqueatum" = Chesacardium laqueatum Conrad 1830 cockle | |
Cyclocardia granulata, "Carditamera protracta" = Cardita protracta
Cyclocardia granulata Say 1824 clam
"Carditamera protracta" = Cardita protracta Conrad 1843 clam | |
"Crassatella marylandica" = Marvacrassatella marylandica, "Crassatella melina" = Marvacrassatella melina
"Crassatella marylandica" = Marvacrassatella marylandica Conrad 1832 clam
"Crassatella melina" = Marvacrassatella melina Conrad 1832 clam | |
Noetia carolinensis clam | |
Arca callipleura ark
Arca improcera ark | |
"Axinaea lentiformis" = Glycymeris clam | |
Isognomon tortum oyster | |
Pinna sp. Linnaeus 1758 oyster | |
Ostrea trachydiscus n. sp. oyster | |
Anomia multilineata jingle | |
"Pecten marylandicus" = Placopecten marylandica, "Pecten clintonius" = Placopecten clintonius, "Pecten virginianus" = Placopecten virginiana, "Pecten cerinus n. sp." = Eburneopecten cerinus, Pecten humphreysii, "Pecten jeffersonius" = Chesapecten jeffersonius, "Pecten madisonius" = Chesapecten madisonius
"Pecten marylandicus" = Placopecten marylandica Wagner 1839 scallop
"Pecten clintonius" = Placopecten clintonius Say 1824 scallop
"Pecten virginianus" = Placopecten virginiana Conrad 1840 scallop
"Pecten cerinus n. sp." = Eburneopecten cerinus Conrad 1869 scallop
Pecten humphreysii Conrad 1842 scallop
"Pecten jeffersonius" = Chesapecten jeffersonius Say 1824 scallop
"Pecten madisonius" = Chesapecten madisonius Say 1824 scallop | |
Gastropoda | |
"Fissurella redimicula" = Diodora redimicula
"Fissurella redimicula" = Diodora redimicula Say 1824 snail | |
Lunatia catenoides moon snail | |
"Bursa centrosa n. sp." = Tritonium centrosum
"Bursa centrosa n. sp." = Tritonium centrosum Cope 1867 triton | |
Ecphora quadricostata Conrad 1830 murex snail | |
"Turritella alticostata" = Turritella (Turritella) alticostata, Turritella indenta
"Turritella alticostata" = Turritella (Turritella) alticostata Conrad 1834 turret shell
Turritella indenta Conrad 1841 turret shell | |
Scala pachypleura Conrad 1841 wentletrap | |
Craniata | |
"Orbicula lububris" = Neocrania
"Orbicula lububris" = Neocrania | |
Chondrichthyes | |
"Lamna elegans" = Striatolamia macrota, "Lamna ? subulata" = Scapanorhynchus subulatus
"Lamna elegans" = Striatolamia macrota Agassiz 1838 goblin shark
"Lamna ? subulata" = Scapanorhynchus subulatus Agassiz 1843 goblin shark | |
"Carcharodon ? angustidens" = Otodus (Carcharocles) angustidens, "Otodus appendiculatus" = Cretalamna appendiculata, Otodus obliquus, "Carcharodon megalodon" = Otodus megalodon
"Carcharodon ? angustidens" = Otodus (Carcharocles) angustidens Agassiz 1835 mackerel shark
"Otodus appendiculatus" = Cretalamna appendiculata Agassiz 1835 mackerel shark
Otodus obliquus Agassiz 1838 mackerel shark
"Carcharodon megalodon" = Otodus megalodon Agassiz 1835 megalodon | |
"Lamna cuspidata" = Araloselachus cuspidatus, "Lamna denticulata" = Araloselachus cuspidatus
"Lamna cuspidata" = Araloselachus cuspidatus Agassiz 1843 sand tiger shark
"Lamna denticulata" = Araloselachus cuspidatus Agassiz 1843 sand tiger shark | |
"Lamna hopei" = Carcharias hopei
"Lamna hopei" = Carcharias hopei Agassiz 1843 sand shark | |
"Galeocerdo contortus" = Physogaleus contortus, Galeocerdo appendiculatus, Galeocerdo sp., Galeocerdo latidens, Galeocerdo egertoni, Galeocerdo aduncus
"Galeocerdo contortus" = Physogaleus contortus Gibbes 1847 ground shark
Galeocerdo appendiculatus tiger shark
Galeocerdo sp. Müller and Henle 1837 tiger shark
Galeocerdo latidens Agassiz 1835 tiger shark
Galeocerdo egertoni Agassiz 1843 tiger shark
Galeocerdo aduncus Agassiz 1835 tiger shark | |
Hemipristis serra Agassiz 1835 ground shark | |
Sphyrna sp. Rafinesque 1810 hammerhead shark
Sphyrna magna Cope 1868 hammerhead shark
"Galeocerdo laevissimus n. sp." = Sphyrna laevissima Cope 1867 hammerhead shark | |
"Sphyrna prisca" = Cestracion prisca
"Sphyrna prisca" = Cestracion prisca Agassiz 1843 bullhead shark | |
Notidanus primigeneus, "Notidanus plectrodon n. sp." = Notorynchus cepedianus
Notidanus primigeneus cow shark
"Notidanus plectrodon n. sp." = Notorynchus cepedianus Peron 1807 cow shark | |
Myliobatis gigas, Myliobatis pachyodon, Myliobatis vicomicanus, Aetobatis profundus n. sp., "Aetobatis arcuatus" = Aetobatus irregularis6, Aetobatus arcuatus
Myliobatis gigas Cope 1868 eagle ray
Myliobatis pachyodon Cope 1868 eagle ray
Myliobatis vicomicanus Cope 1868 eagle ray
Aetobatis profundus n. sp. Cope 1867 eagle ray | |
"Raja dux" = Trygon dux
"Raja dux" = Trygon dux Cope 1867 whiptail stingray | |
Actinopteri | |
"Sphyraena speciosa" = Sphyraenodus speciosus
"Sphyraena speciosa" = Sphyraenodus speciosus Leidy 1856 | |
Aves | |
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Reptilia | |
Thecachampsa sericodon n. sp., "Thecachampsa contusor n. sp." = Thecachampsa antiquus
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Trionyx cellulosus Cope 1868 turtle | |
Chelone sp. Linnaeus 1758 sea turtle | |
Mammalia | |
"Megaptera expansa n. sp." = Eschrichtius expansus3, "Balaenoptera pusilla n. sp." = Eschrichtius pusillus4
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"Delphinapterus tyrannus n. sp." = Cetotherium parvum3
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Rhabdosteus latiradix n. gen. n. sp.2
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Zarhachis flagellator n. gen. n. sp.3
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Squalodon wymanii n. sp., "Delphinapterus lacertosus n. sp." = Tretosphys lacertosus3, "Delphinapterus hawkinsii n. sp." = Tretosphys lacertosus3, "Delphinapterus gabbii n. sp." = Tretosphys gabbii3, "Delphinapterus ruschenbergeri n. sp." = Tretosphys ruschenbergeri3, Ixacanthus coelospondylus n. gen. n. sp.3
Squalodon wymanii n. sp. Cope 1867 toothed whale it is not clear which locality Squalodon wymanii is from. Only described as Miocene of Charles County, MD.
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Orycterocetus crocodilinus Cope 1867 sperm whale | |
Priscodelphinus stenus n. sp.3, Priscodelphinus atropius n. sp.3, Priscodelphinus acutidens n. sp., Priscodelphinus spinosus n. sp.3, Cetophis heteroclitus n. gen. n. sp.3, "Squalodon mento n. sp." = Delphinodon mento2
Priscodelphinus acutidens n. sp. Cope 1867 toothed whale
"Squalodon mento n. sp." = Delphinodon mento2 Cope 1867 toothed whale It is not clear which locality Squalodon mento is actually from.
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Dinophyceae | |
Spiniferites sp.8 Mantell 1850
Spiniferites mirabilis8 Sarjeant 1970 | |
Palaeocystodinium golzowense8 Alberti 1961 | |
Tuberculodinium vancampoae8 Wall 1967 | |
Reticulatosphaera actinocoronata8 Bujak and Matsuoka 1986 | |
Crassatella undulata | |
"Crassatella undulata" = Kalolophus antillarum
"Crassatella undulata" = Kalolophus antillarum Reeve 1842 |