Little Cove Point, Zone 22: Tortonian, Maryland
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Thecostraca
- Balanomorpha
- Balanidae
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Balanus concavus
Bronn 1831
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| recombined as Concavus concavus | ||||||||||
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Gastropoda
- Turritellidae
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Turritella plebeia
Say 1824
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| recombined as Mariacolpus plebeia | ||||||||||
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Turritella variabilis
Conrad 1830
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| recombined as Turritella (Torcula) variabilis | ||||||||||
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Gastropoda
- Neogastropoda
- Muricidae
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Ecphora quadricostata
(Conrad 1830)
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Gastropoda
- Neogastropoda
- Nassariidae
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Nassa peralta
(Conrad 1868)
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| recombined as Nassarius (Tritiaria) peralta | ||||||||||
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Gastropoda
- Neogastropoda
- Columbellidae
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Columbella communis
(Conrad 1862)
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| recombined as Astyris communis | ||||||||||
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Gastropoda
- Neogastropoda
- Terebridae
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Terebra inornata
Whitfield 1894
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Gastropoda
- Neogastropoda
- Conidae
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Mangilia parva
(Conrad 1830)
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| recombined as Propebela parva | ||||||||||
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Gastropoda
- Naticidae
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Polynices heros
(Say 1822)
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| recombined as Euspira heros | ||||||||||
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Bivalvia
- Pectinida
- Pectinidae
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Pecten jeffersonius
Say 1824
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| recombined as Chesapecten jeffersonius | ||||||||||
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Pecten madisonius
Say 1824
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| recombined as Chesapecten madisonius | ||||||||||
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Bivalvia
- Arcida
- Arcidae
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Arca idonea
Conrad 1832
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| recombined as Dallarca idonea | ||||||||||
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Bivalvia
- Pholadida
- Corbulidae
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Corbula inaequalis
Say 1824
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| var. mortoni | ||||||||||
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Mammalia
- Cetacea
- Cetotheriidae
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Cetotherium megalophysum
Cope 1895
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Case 1904 | 1 specimen | ||||||||
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Mammalia
- Cetacea
- Platanistidae
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Pomatodelphis santamaria
Godfrey and Lambert 2023
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Godfrey and Lambert 2023 | 1 specimen | ||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Maryland |
| Coordinates: | 38.4° North, 76.4° West (view map) | ||
| Paleocoordinates: | 38.5° North, 74.4° West | ||
| Basis of coordinate: | estimated from map | ||
| Geographic resolution: | outcrop |
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 | Member: | Little Cove Point |
| Regional section: | Shattuck | Regional bed: | 22 | ||
| Regional order: | bottom to top |
Lithology and environment
| Primary lithology: | blue sandy claystone |
| Includes fossils? | Y |
| Lithology description: bluish sandy clay | |
| Environment: | foreshore |
| Geology comments: foreshore, muddy, shallow shelf | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | general faunal/floral analysis |
Metadata
| Database number: | 70851 | ||
| Authorizer: | M. Uhen | Enterer: | M. Uhen |
| Modifier: | B. Shipps | Research group: | marine invertebrate,vertebrate |
| Created: | 2007-04-09 14:58:59 | Last modified: | 2017-02-26 16:35:24 |
| Access level: | database members | Released: | 2007-07-09 14:58:59 |
| 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:
| 15442 | E. C. Case. 1904. Systematic Paleontology: Mammalia. Maryland Geological Survey Miocene: Text 1-58 [M. Uhen/M. Uhen] | |
| 33214 | T. G. Gibson. 1962. Revision of the Turridae of the Miocene St. Mary's Formation of Maryland. Journal of Paleontology 36(2):225-246 [M. Uhen/S. Strother] | |
| 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] | |
| 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] |