78SK14 - Unit 8 (base): Burdigalian, Maryland
collected by Kidwell 1978
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Scaphopoda
- Gadilida
- Gadilidae
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Cadulus thallus
(Conrad 1834)
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1 individual | |||||||||
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Bivalvia
- Mytilida
- Mytilidae
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Modiolus ducatelli
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1 individual | |||||||||
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Bivalvia
- Arcida
- Glycymerididae
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Glycymeris parilis
(Conrad 1843)
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7 individuals | |||||||||
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Bivalvia
- Arcida
- Arcidae
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Anadara subrostrata
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Bivalvia
- Pectinida
- Pectinidae
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Chesapecten nefrens
Ward and Blackwlder 1975
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26 individuals | |||||||||
| recombined as Chesapecten (Chesapecten) nefrens | ||||||||||
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Bivalvia
- Pectinida
- Anomiidae
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Anomia simplex
d'Orbigny 1845
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1 individual | |||||||||
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Bivalvia
- Lucinida
- Lucinidae
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Parvilucina crenulatus
(Conrad 1840)
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7 individuals | |||||||||
| recombined as Parvilucina crenulata | ||||||||||
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Bivalvia
- Pholadida
- Corbulidae
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Corbula elevata
Conrad 1838
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4 individuals | |||||||||
| recombined as Varicorbula elevata | ||||||||||
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Bivalvia
- Pholadida
- Teredinidae
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"Kuphus" sp.
Guettard 1770
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1 individual | |||||||||
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Bivalvia
- Cardiida
- Veneridae
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Chione latilirata
(Conrad 1841)
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14 individuals | |||||||||
| recombined as Lirophora (Lirophora) latilirata | ||||||||||
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Dosinia acetabulum
(Conrad 1832)
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1 individual | |||||||||
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Mercenaria sp.
Schumacher 1817
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1 individual | |||||||||
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Bivalvia
- Hiatellida
- Hiatellidae
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Panopea sp.
(Menard 1807)
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1 individual | |||||||||
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Bivalvia
- Nuculanida
- Nuculanidae
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Nuculana luciata
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1 individual | |||||||||
| SUBSPECIES: Nuculana luciata amydia | ||||||||||
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Gastropoda
- Epitoniidae
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"Scala" sayana
Dall 1889
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1 individual | |||||||||
| synonym of Epitonium humphreysii | ||||||||||
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Gastropoda
- Turritellidae
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Turritella variabilis
Conrad 1830
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39 individuals | |||||||||
| recombined as Turritella (Torcula) variabilis | ||||||||||
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Gastropoda
- Naticidae
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Lunatia heros
(Say 1822)
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3 individuals | |||||||||
| recombined as Euspira heros | ||||||||||
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Gastropoda
- Neotaenioglossa
- Calyptraeidae
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Calyptraeidae indet.
Lamarck 1809
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3 individuals | |||||||||
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Crepidula fornicata
(Linnaeus 1758)
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Thecostraca
- Balanomorpha
- Balanidae
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Balanus concavus
Bronn 1831
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| recombined as Concavus concavus | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Maryland | County: | Calvert |
| Coordinates: | 38.6° North, 76.5° West (view map) | ||||
| Paleocoordinates: | 38.9° North, 72.6° West | ||||
| Basis of coordinate: | based on nearby landmark | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Neogene | Epoch: | Miocene |
| Stage: | Burdigalian | 10 m.y. bin: | Cenozoic 5 |
| Key time interval: | Burdigalian | ||
| Age range of interval: | 20.44000 - 15.98000 m.y. ago |
Stratigraphy
| Geological group: | Chesapeake | Formation: | Calvert | Member: | Plum Point |
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: STRATIGRAPHIC RELATIONS: From Plum Point Mbr of the Calvert Fm, Chesapeake Grp. AGE: Middle Miocene. STRATIGRAPHIC POSITION: From base of unit 8. | |||||
Lithology and environment
| Primary lithology: | fine unlithified sandstone |
| Includes fossils? | Y |
| Lithology description: SPECIFIC LITHOLOGY: Fine sand. LITHIFICATION: Unlithified, based on visual inspection of collection by enterer. | |
| Environment: | coastal indet. |
| Geology comments: ENVIRONMENT: Shallow marine siliciclastic. | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | bulk,sieve,field collection | ||
| Minimum sieve size: | 1.000 | ||
| Reason for describing collection: | taxonomic analysis | ||
| Museum repositories: | YPM | ||
| Collectors: | Kidwell | Collection dates: | 1978 |
| Collection method comments: COLLECTOR: S.K. Kidwell, 1978. REPOSITORY: Peabody Museum of Natural History, Yale University. | |||
| Taxonomic list comments:COVERAGE: Exhaustive for gastropoda, bivalvia, and scaphopoda. NOMENCLATURE: Somewhat modern. Identifications are based on Martin (1904) for gastropods and bivalves, with revisions following subsequent publications. | |||
Metadata
| Also known as: | B-504 | ||
| Database number: | 79102 | ||
| Authorizer: | A. Hendy | Enterer: | A. Hendy |
| Modifier: | G. Varnham | Research group: | marine invertebrate |
| Created: | 2008-02-25 17:24:59 | Last modified: | 2022-03-03 04:20:20 |
| Access level: | the public | Released: | 2008-02-25 17:24:59 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 26560. | S. M. Kidwell. 1982. Stratigraphy, invertebrate taphonomy and depositional history of the Miocene Calvert and Choptank Formations, Atlantic Coastal Plain. Unpublished PhD thesis, Yale University 1-511 [A. Hendy/A. Hendy/A. Hendy] |