Plum Point, south, Zone 12: Langhian, Maryland
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Bivalvia
- Cardiida
- Veneridae
|
||||||||||
Cytherea staminea
Conrad 1838
|
||||||||||
recombined as Melosia staminea | ||||||||||
Venus mercenaria
Linnaeus 1758
|
||||||||||
recombined as Mercenaria mercenaria | ||||||||||
Gastropoda
- Neogastropoda
- Muricidae
|
||||||||||
Ecphora quadricostata
(Conrad 1830)
|
||||||||||
var umbilicata | ||||||||||
Reptilia
- Testudines
- Testudinidae
|
||||||||||
Hesperotestudo ducateli
(Collins and Lynn 1936)
|
Weems 2023 | 1 specimen | ||||||||
Neural element (CMM-V-8882), collected by Victor Perez | ||||||||||
Reptilia
- Testudines
- Emydidae
|
||||||||||
Chrysemys isoni
Weems and George 2001
|
Weems 2023 | 1 specimen | ||||||||
Partial carapace and largely complete plastron of a single individual (CMM-V-8881), collected by Billy Palmer | ||||||||||
Reptilia
- Testudines
- Cheloniidae
|
||||||||||
Procolpochelys grandaeva
(Leidy 1861)
|
Weems 2023 | 1 specimen | ||||||||
Neural element (USNM 358021), collected by George Fonger | ||||||||||
Reptilia
- Testudines
|
||||||||||
Chelonia indet.
(Latreille 1800)
|
Uhen 2007 | 1 specimen | ||||||||
synonym of Testudines | ||||||||||
Mammalia
- Sirenia
- Dugongidae
|
||||||||||
Metaxytherium calvertense
Kellogg 1966
|
Uhen 2007 | 1 specimen | ||||||||
synonym of Metaxytherium crataegense | ||||||||||
Mammalia
- Cetacea
- Squalodontidae
|
||||||||||
Squalodon sp.
Grateloup 1840
|
Uhen 2007 | 1 specimen | ||||||||
Mammalia
- Cetacea
- Delphinidae
|
||||||||||
Delphinidae indet.
Gray 1821
|
Uhen 2007 | |||||||||
Mammalia
- Cetacea
- Kentriodontidae
|
||||||||||
Kentriodon sp.
Kellogg 1927
|
Uhen 2007 | 1 specimen | ||||||||
Mammalia
- Cetacea
- Eurhinodelphinidae
|
||||||||||
Xiphiacetus bossi
(Kellogg 1925)
|
Godfrey and Lambert 2023 | |||||||||
Chondrichthyes
- Carcharhiniformes
- Hemigaleidae
|
||||||||||
Hemipristis serra
Agassiz 1835
|
Uhen 2007 | 1 specimen | ||||||||
see common names |
Geography
Country: | United States | State/province: | Maryland | County: | Calvert |
Coordinates: | 38.6° North, 76.5° West (view map) | ||||
Paleocoordinates: | 38.8° North, 73.2° West | ||||
Basis of coordinate: | estimated from map |
Time
Period: | Neogene | Epoch: | Miocene |
Stage: | Langhian | 10 m.y. bin: | Cenozoic 5 |
Key time interval: | Langhian | ||
Age range of interval: | 15.97000 - 13.82000 m.y. ago |
Stratigraphy
Geological group: | Chesapeake | Formation: | Calvert | Member: | Plum Point |
Regional section: | Shattuck | Regional bed: | 12 | ||
Regional order: | bottom to top | ||||
Stratigraphic resolution: | group of beds |
Lithology and environment
Primary lithology: | brown sandy claystone |
Includes fossils? | Y |
Lithology description: brownish sandy clay | |
Environment: | estuary/bay |
Geology comments: sparse molluscs, low in diversity; subtropical environment in embayment and dry onshore; area not far from shore |
Taphonomy
Modes of preservation: | body,original phosphate |
Size of fossils: | macrofossils |
Disassociated minor elements: | some |
Collection methods and comments
Collection methods: | surface (in situ),field collection |
Reason for describing collection: | taxonomic analysis |
Museum repositories: | USNM |
Metadata
Also known as: | Kaufmann Camp | ||
Database number: | 70819 | ||
Authorizer: | M. Uhen, E. Vlachos, M. Nelson | Enterer: | M. Uhen, E. Vlachos, M. Nelson |
Modifier: | Z. Tieman | Research group: | marine invertebrate,vertebrate |
Created: | 2007-04-09 13:26:13 | Last modified: | 2010-07-05 20:25:02 |
Access level: | the public | Released: | 2007-04-09 13:26:13 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
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] |
Secondary references:
85660 | S. J. Godfrey and O. Lambert. 2023. Miocene Toothed Whales (Odontoceti) from Calvert Cliffs, Atlantic Coastal Plain, USA. Smithsonian Contributions to Paleobiology 107:29-186 [M. Uhen/M. Uhen] | |
24251 | M. D. Uhen. 2007. USNM Chesapeake Group Cetacean Collection Data. [M. Uhen/M. Uhen] | |
32709 | L. W. Ward and G. W. Andrews. 2008. Stratigraphy of the Calvert, Choptank, and St. Marys Formations (Miocene) in the Chesapeake Bay Area, Maryland and Virginia. Virginia Museum of Natural History Memoir 1-169 [M. Uhen/M. Uhen] | |
85705 | R. E. Weems. 2023. Miocene and Pliocene Chelonians from the Calvert Cliffs and Nearby Regions. In S. J. Godfrey (ed.), The Geology and Vertebrate Paleontology of Calvert Cliffs, Maryland, USA – Volume 2 Turtles and Toothed Whales 3-48 [E. Vlachos/E. Vlachos] |