Colony Cliffs: Tortonian, Maryland
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Mammalia
- Cetacea
- Cetotheriidae
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Cephalotropis coronatus n. gen., n. sp.
Cope 1896
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1 specimen | ||||||
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Bivalvia
- Pectinida
- Pectinidae
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Pecten sp.
Müller 1776
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Bivalvia
- Lucinida
- Lucinidae
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Lucina sp.
Bruguière 1797
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Gastropoda
- Turritellidae
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Turritella sp.
Lamarck 1799
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| see common names | |||||||
Geography
| Country: | United States | State/province: | Maryland | County: | Saint Marys |
| Coordinates: | 38.4° North, 76.6° West (view map) | ||||
| Paleocoordinates: | 38.6° North, 74.6° West | ||||
| Basis of coordinate: | estimated from map |
Time
| Period: | Neogene | Epoch: | Miocene |
| Stage: | Tortonian | 10 m.y. bin: | Cenozoic 6 |
| Key time interval: | Tortonian | ||
| Age range of interval: | 11.63000 - 7.24600 m.y. ago |
Stratigraphy
| Geological group: | Chesapeake | Formation: | St Marys | ||
| Regional section: | Shattuck | Regional bed: | 22-24 | ||
| Regional order: | bottom to top | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: USNM 9352 lacks detailed stratigraphic information, although Cope believed that it may have been derived from the “Yorktown Formation” [90: 145] – later corrected to St Mary Formation by Kellogg [93]. Strontium dating indicates the Little Cove Point Member of the St Mary‟s Formation to be almost exclusively early Tortonian (11.7–10.0 Ma) [48, 49]. Note that de Verteuil and Norris [94] estimated the relevant portion of the St Mary‟s Formation to be younger (ca. 10.4–8.8 Ma). However, their assignment of these strata to dinoflagellate zone DN8 for the most part does not preclude the older strontium dates [94: fig. 3]. (Marx & Fordyce, 2015)
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Lithology and environment
| Primary lithology: | silty,sandy claystone |
| Includes fossils? | Y |
| Lithology description: clay, silt, and very fine sand | |
| Environment: | offshore shelf |
| Geology comments: foreshore, muddy, shallow shelf | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | taxonomic analysis |
| Museum repositories: | USNM |
Metadata
| Also known as: | Queen Anne Landing | ||
| Database number: | 52050 | ||
| Authorizer: | M. Uhen | Enterer: | M. Uhen |
| Modifier: | B. Shipps | Research group: | marine invertebrate,vertebrate |
| Created: | 2005-07-14 13:49:50 | Last modified: | 2017-02-26 16:34:34 |
| Access level: | database members | Released: | 2005-10-14 13:49:50 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 12327. | E. D. Cope. 1896. Sixth contribution to the knowledge of the marine Miocene fauna of North America. Proceedings of the American Philosophical Soceity 35(150):139-146 [M. Uhen/M. Uhen/M. Carrano] |
Secondary references:
| 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] | |
| 15325 | M. D. Gottfried, D. J. Bohaska, and F. C. Whitmore, Jr. 1994. Miocene cetaceans of the Chesapeake Group. Proceedings of the San Diego Society of Natural History 29:229-238 [M. Uhen/M. Uhen] | |
| 27984 | S. M. Kidwell. 1997. Anatomy of extremely thin marine sequences landward of a passive-margin hinge zone: Neogene Calvert Cliffs Succession, Maryland, U.S.A. Journal of Sedimentary Research 67(2):322-340 [M. Uhen/M. Uhen] | |
| 55050 | F. G. Marx and R. E. Fordyce. 2015. Baleen boom and bust: a synthesis of mysticete phylogeny, diversity and disparity. Royal Society Open Science 2:140434 [M. Uhen/M. Uhen] |