UC bulk sample [Plum Point Marl, Calvert Fm]: Langhian, Maryland
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Gastropoda
- Turritellidae
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Turritella plebeia
Say 1824
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559 specimens | ||||||
| recombined as Mariacolpus plebeia | |||||||
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Turritella exaltata
Conrad 1841
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1 specimen | ||||||
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Gastropoda
- Neotaenioglossa
- Calyptraeidae
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Crepidula fornicata
(Linnaeus 1758)
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4 specimens | ||||||
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Crucibulum costatum
(Say 1820)
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1 specimen | ||||||
| recombined as Crucibulum (Dispotaea) costata | |||||||
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Gastropoda
- Naticidae
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Neverita duplicatus
(Say 1822)
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32 specimens | ||||||
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Euspira cf. heros
(Say 1822)
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6 specimens | ||||||
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Gastropoda
- Neogastropoda
- Columbellidae
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Columbellidae indet.
Swainson 1840
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1 specimen | ||||||
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Gastropoda
- Neogastropoda
- Nassariidae
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Nassarius (Tritaria) peralta
(Conrad 1868)
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49 specimens | ||||||
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Bulliopsis sp.
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12 specimens | ||||||
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Gastropoda
- Neogastropoda
- Melongenidae
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Busycon cf. fusiforme
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2 specimens | ||||||
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Gastropoda
- Neogastropoda
- Cancellariidae
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Cancellaria sp.
Lamarck 1799
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1 specimen | ||||||
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Gastropoda
- Neogastropoda
- Terebridae
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Terebra cf. simplex
Conrad 1830
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14 specimens | ||||||
| recombined as Laevihastula simplex | |||||||
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Gastropoda
- Neogastropoda
- Conidae
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Conus deluvianus
Green 1830
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2 specimens | ||||||
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Gastropoda
- Neogastropoda
- Turridae
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Turridae indet.
Swainson 1840
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15 specimens | ||||||
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Gastropoda
- Neogastropoda
- Muricidae
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Muricidae indet.
Rafinesque 1815
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1 specimen | ||||||
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"Typhis" acuticosta
(Conrad 1830)
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3 specimens | ||||||
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Bivalvia
- Pectinida
- Pectinidae
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Chesapecten (Chesapecten) nefrens
(Ward and Blackwlder 1975)
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8 specimens | ||||||
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Bivalvia
- Arcida
- Arcidae
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Dallarca subrostrata
(Conrad 1841)
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2 specimens | ||||||
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Bivalvia
- Cardiida
- Solecurtidae
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Tagelus sp.
Gray 1847
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1 specimen | ||||||
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Bivalvia
- Cardiida
- Veneridae
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Dosinia (Dosinidia) acetabulum
(Conrad 1832)
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2 specimens | ||||||
| recombined as Dosinia acetabulum | |||||||
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Mercenaria blakei
Ward 1992
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6 specimens | ||||||
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Bivalvia
- Cardiida
- Mactridae
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"Spisula" subcuneata
(Conrad 1838)
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60 specimens | ||||||
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Bivalvia
- Pholadida
- Myidae
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Mya cf. arenaria
Linnaeus 1758
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3 specimens | ||||||
| recombined as Mya (Arenomya) arenaria | |||||||
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Bivalvia
- Pholadida
- Corbulidae
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Varicorbula elevata
(Conrad 1838)
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2 specimens | ||||||
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Bivalvia
- Pholadida
- Pholadidae
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Barnea sp.
Leach 1826
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3 specimens | ||||||
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Bivalvia
- Solenida
- Pharidae
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Ensis ensiformis
(Conrad 1843)
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2 specimens | ||||||
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Bivalvia
- Pandorida
- Pandoridae
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Pandora sp.
Bruguière 1797
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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: | based on nearby landmark | ||||
| Geographic resolution: | small collection |
Time
| Period: | Neogene | Epoch: | Miocene |
| Stage: | Langhian | 10 m.y. bin: | Cenozoic 5 |
| Key time interval: | Langhian | ||
| Age range of interval: | 15.98000 - 13.82000 m.y. ago |
Stratigraphy
| Geological group: | Chesapeake | Formation: | Calvert | Member: | Plum Point |
| Regional section: | Shattuck | Regional bed: | 10-13 | ||
| Regional order: | bottom to top | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: STRATIGRAPHIC RELATIONS: From Plum Point Mbr of the Calvert Fm, Chesapeake Grp. AGE: Middle Miocene. STRATIGRAPHIC POSITION: Unknown position within member. | |||||
Lithology and environment
| Primary lithology: | coarse,shelly/skeletal unlithified sandy marl |
| Includes fossils? | Y |
| Lithology description: SPECIFIC LITHOLOGY: Coarse sandy marl, shelly. LITHIFICATION: Unlithified, based on observation of specimens. | |
| Environment: | coastal indet. |
| Geology comments: ENVIRONMENT: Shallow-marine, restricted/sheltered, fine-grained siliciclastic environment. | |
Taphonomy
| Modes of preservation: | body,original aragonite |
| Size of fossils: | macrofossils |
| Preservation of anatomical detail: | good |
Collection methods and comments
| Collection methods: | bulk,sieve,field collection |
| Minimum sieve size: | 4.000 |
| Reason for describing collection: | paleoecologic analysis |
| Collection method comments: COLLECTOR: Presumably K. Castor, 1960's. REPOSITORY: Department of Geology, University of Cincinnati. | |
| Taxonomic list comments:TAXONOMY: Identified by A. Hendy; nomenclature based on revision of Gardner (1943) [PBDB Ref# 16984]and Ward (1992) [16985]. | |
Metadata
| Database number: | 69023 | ||
| Authorizer: | A. Hendy | Enterer: | A. Hendy |
| Modifier: | G. Varnham | Research group: | marine invertebrate |
| Created: | 2007-02-15 10:49:20 | Last modified: | 2022-03-03 04:16:58 |
| Access level: | authorizer only | Released: | 2008-02-15 10:49:20 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 19909. | A. J. W. Hendy, D. P. Buick, K. V. Bulinski, C. A. Ferguson, and A. I. Miller. 2008. Unpublished census data from Atlantic coastal plain and circum-Caribbean Neogene assemblages and taxonomic opinions. [A. Hendy/A. Hendy/A. Hendy] |