Patuxent River, near: Serravallian, Maryland
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Chondrichthyes
- Myliobatiformes
- Myliobatidae
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Aetobatis arcuatus
Agassiz 1843
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Shattuck 1904 | |||||||||
synonym of Aetobatus irregularis | ||||||||||
Myliobatis frangens n. sp.
Eastman 1904
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Eastman 1904 | |||||||||
Myliobatis gigas
Cope 1868
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Eastman 1904 | |||||||||
Myliobatis pachyodon
Cope 1868
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Eastman 1904 | |||||||||
Chondrichthyes
- Myliobatiformes
- Dasyatidae
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Raja dux
Cope 1867
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Eastman 1904 | |||||||||
recombined as Trygon dux | ||||||||||
Chondrichthyes
- Lamniformes
- Odontaspididae
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Odontaspis cuspidata
(Agassiz 1843)
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Shattuck 1904 | |||||||||
recombined as Araloselachus cuspidatus | ||||||||||
Chondrichthyes
- Lamniformes
- Otodontidae
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Carcharodon megalodon
(Agassiz 1835)
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Shattuck 1904 | |||||||||
recombined as Otodus megalodon | ||||||||||
Otodus obliquus
Agassiz 1838
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Shattuck 1904 | |||||||||
Chondrichthyes
- Lamniformes
- Carchariidae
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Carcharias collata
Eastman 1904
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Shattuck 1904 | |||||||||
Chondrichthyes
- Lamniformes
- Lamnidae
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Oxyrhina desorii
Agassiz 1843
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Shattuck 1904 | |||||||||
synonym of Isurus oxyrinchus | ||||||||||
Oxyrhina hastalis
Agassiz 1838
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Shattuck 1904 | |||||||||
recombined as Carcharodon hastalis | ||||||||||
Chondrichthyes
- Carcharhiniformes
- Hemigaleidae
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Hemipristis serra
Agassiz 1835
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Shattuck 1904 | |||||||||
Chondrichthyes
- Carcharhiniformes
- Galeocerdidae
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Galeocerdo aduncus
(Agassiz 1835)
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Shattuck 1904 | |||||||||
Galeocerdo latidens
(Agassiz 1835)
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Shattuck 1904 | |||||||||
Galeocerdo contortus
Gibbes 1847
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Shattuck 1904 | |||||||||
recombined as Physogaleus contortus | ||||||||||
Chondrichthyes
- Carcharhiniformes
- Carcharhinidae
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Carcharias (Prionodon) egertoni
(Agassiz 1843)
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Shattuck 1904 | |||||||||
recombined as Prionodon egertoni | ||||||||||
Galeocerdo triqueter
Eastman 1904
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Shattuck 1904 | |||||||||
recombined as Physodon triqueter | ||||||||||
Chondrichthyes
- Carcharhiniformes
- Sphyrnidae
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Carcharias magna
(Cope 1868)
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Shattuck 1904 | |||||||||
original and current combination Sphyrna magna | ||||||||||
Sphyrna magna
Cope 1868
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Leriche 1942 | |||||||||
Carcharias laevissimus
(Cope 1867)
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Shattuck 1904 | |||||||||
recombined as Sphyrna laevissima | ||||||||||
Chondrichthyes
- Heterodontiformes
- Heterodontidae
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Sphyrna prisca
Agassiz 1843
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Shattuck 1904 | |||||||||
recombined as Cestracion prisca | ||||||||||
Chondrichthyes
- Squalomorphii
- Hexanchidae
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Notidanus primigenius
Agassiz 1835
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Eastman 1904 | |||||||||
recombined as Notorhynchus primigenius | ||||||||||
Actinopteri
- Scombriformes
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Sphyraena speciosa
Leidy 1856
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Shattuck 1904 | |||||||||
recombined as Sphyraenodus speciosus | ||||||||||
Reptilia
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Thecachampsa sicaria n. sp.
Cope 1869
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Weems 2018 | |||||||||
synonym of Thecachampsa sericodon | ||||||||||
AMNH FARB 1321 - type | ||||||||||
Reptilia
- Testudines
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Trionyx cellulosus
Cope 1868
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Case 1904 | |||||||||
nomen dubium belonging to Pantrionychidae | ||||||||||
Reptilia
- Testudines
- Trionychidae
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Trionyx sp.
Geoffroy Saint-Hilaire 1809
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Case 1904 | |||||||||
= Trionychidae indet.
Gray 1825
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Alroy 2006 | |||||||||
Reptilia
- Testudines
- Cheloniidae
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Chelone sp.
Linnaeus 1758
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Case 1904 | |||||||||
Mammalia
- Cetacea
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Cetacea indet.
Brisson 1762
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1 specimen | |||||||||
whale vertebra | ||||||||||
Ixacanthus stenus
(Cope 1868)
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Shattuck 1904 | |||||||||
nomen dubium belonging to Odontoceti | ||||||||||
Ixacanthus atropius
(Cope 1868)
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Shattuck 1904 | |||||||||
nomen dubium belonging to Odontoceti | ||||||||||
Ixacanthus conradi
(Leidy 1852)
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Shattuck 1904 | |||||||||
nomen dubium belonging to Odontoceti | ||||||||||
Delphinodon leidyi
Hay 1902
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Shattuck 1904 | |||||||||
invalid subgroup of Odontoceti | ||||||||||
Rhabdosteus latiradix
Cope 1867
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Myrick 1979 | |||||||||
nomen dubium belonging to Odontoceti | ||||||||||
Cetophis heteroclitus
Cope 1868
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Shattuck 1904 | |||||||||
nomen dubium belonging to Odontoceti | ||||||||||
Ixacanthus spinosus
(Cope 1868)
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Shattuck 1904 | |||||||||
nomen dubium belonging to Odontoceti | ||||||||||
Priscodelphinus ruschenbergeri
(Cope 1868)
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Shattuck 1904 | |||||||||
nomen dubium belonging to Odontoceti | ||||||||||
Priscodelphinus gabbii
(Cope 1868)
|
Shattuck 1904 | |||||||||
nomen dubium belonging to Odontoceti | ||||||||||
Priscodelphinus lacertosus
(Cope 1868)
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Shattuck 1904 | |||||||||
nomen dubium belonging to Odontoceti | ||||||||||
Ixacanthus coelospondylus
Cope 1868
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Shattuck 1904 | |||||||||
nomen dubium belonging to Odontoceti | ||||||||||
Mammalia
- Cetacea
- Squalodontidae
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Squalodon atlanticus
(Leidy 1856)
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Shattuck 1904 | |||||||||
invalid subgroup of Squalodontidae | ||||||||||
Mammalia
- Cetacea
- Platanistidae
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Zarhachis flagellator
Cope 1868
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Shattuck 1904 | |||||||||
Mammalia
- Tayassuidae
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Squalodon protervus
(Cope 1867)
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Shattuck 1904 | |||||||||
nomen dubium belonging to Tayassuidae | ||||||||||
Bivalvia
- Pectinida
- Pectinidae
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Pecten (Pseudamusium) cerinus
(Conrad 1869)
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Shattuck 1904 | |||||||||
recombined as Eburneopecten cerinus | ||||||||||
Gastropoda
- Ranellidae
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Tritonium centrosum
(Cope 1867)
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Shattuck 1904 | |||||||||
see common names |
Geography
Country: | United States | State/province: | Maryland | County: | Charles |
Coordinates: | 38.5° North, 76.7° West (view map) | ||||
Paleocoordinates: | 38.7° North, 73.8° West | ||||
Basis of coordinate: | estimated from map | ||||
Geographic resolution: | local area |
Time
Period: | Neogene | Epoch: | Miocene |
Stage: | Serravallian | 10 m.y. bin: | Cenozoic 5 |
Key time interval: | Serravallian | ||
Age range of interval: | 13.82000 - 11.63000 m.y. ago |
Stratigraphy
Geological group: | Chesapeake | Formation: | Calvert | Member: | Calvert Beach |
Regional section: | Shattuck | Regional bed: | 12 | ||
Regional order: | bottom to top | ||||
Stratigraphy comments: early late Barstovian; 14.9-14.8 Ma AEO date
Zones 14-16A are regarded as Serravallian in age. |
Lithology and environment
Primary lithology: | not reported |
Environment: | coastal indet. |
Taphonomy
Modes of preservation: | body,original phosphate |
Size of fossils: | macrofossils |
Collection methods and comments
Reason for describing collection: | general faunal/floral analysis |
Metadata
Database number: | 57782 | ||
Authorizer: | M. Uhen, J. Alroy | Enterer: | M. Uhen, J. Alroy |
Modifier: | G. Varnham | Research group: | vertebrate |
Created: | 2006-01-02 11:57:28 | Last modified: | 2022-03-03 05:30:11 |
Access level: | the public | Released: | 2006-01-02 11:57:28 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
33100. | 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] |
Secondary references:
18120 | J. Alroy. 2006. Synonymies and reidentifications of North American fossil vertebrates. [J. Alroy/J. Alroy/J. Alroy] | |
17218 | E. C. Case. 1904. Systematic Paleontology: Reptilia. Maryland Geological Survey Miocene: Text 62-70 [M. Uhen/M. Uhen/M. Uhen] | |
14163 | E. D. Cope. 1867. [Descriptions of Eschrichtius cephalus, Rhabdosteus latiradix, Squalodon atlanticus, and S. mento.]. Proceedings of the Academy of Natural Science of Philadelphia 1867:131-132 [M. Uhen/M. Uhen/M. Uhen] | |
14892 | L. de Verteuil and G. Norris. 1996. Dinoflagellate cyst zonation and allostratigraphy of the Chesapeake Group. Micropaleontology 42:1-25 [M. Uhen/M. Uhen/M. Uhen] | |
17219 | C. R. Eastman. 1904. Systematic Paleontology: Pisces. Maryland Geological Survey Miocene, Text 71-93 [M. Uhen/M. Uhen/M. Uhen] | |
28099 | M. Leriche. 1942. Contribution a l'etude des faunes ichthyologiques marines des terrains tertiaires de la plaine cotiere Atlantique et du centre des Etats-Unis. Memoires de la Societe Geologique de France (Nouvelle Serie) 45:1-111 [M. Uhen/M. Uhen] | |
15550 | A. C. Myrick. 1979. Variation, taphonomy, and adaptation of the Rhabdosteidae (=Eurhinodelphidae) (Odontoceti, Mammalia) from the Calvert Formation of Maryland and Virginia. University of California, Los Angeles 1-411 [M. Uhen/M. Uhen] | |
23697 | G. B. Shattuck. 1904. Geological and paleontological relations, with a review of earlier investigations. Maryland Geological Survey Miocene Text xxxiii-clv [M. Uhen/M. Uhen] | |
23900 | R. E. Weems. 2018. Crocodilians of the Calvert Cliffs. Smithsonian Contributions to Paleobiology 100:213-240 [J. Alroy/J. Alroy/M. Uhen] |