YPM 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
- Trochidae
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Calliostoma sp.
Swainson 1840
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Gastropoda
- Lepetellida
- Fissurellidae
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Diodora marylandica
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3 specimens | ||||||
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Gastropoda
- Neotaenioglossa
- Calyptraeidae
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Crucibulum costatum
(Say 1820)
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5 specimens | ||||||
| recombined as Crucibulum (Dispotaea) costata | |||||||
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Gastropoda
- Turritellidae
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Turritella plebeia
Say 1824
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1 specimen | ||||||
| recombined as Mariacolpus plebeia | |||||||
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Turritella exaltata
Conrad 1841
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2 specimens | ||||||
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Gastropoda
- Epitoniidae
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Scala sayana
Dall 1889
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1 specimen | ||||||
| synonym of Epitonium humphreysii | |||||||
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Gastropoda
- Vermetidae
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Serpulorbis graniferus
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2 specimens | ||||||
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Gastropoda
- Neogastropoda
- Muricidae
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Ecphora tricostata
Martin 1904
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1 specimen | ||||||
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Gastropoda
- Neogastropoda
- Buccinidae
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Siphonalia devexa
(Conrad 1843)
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1 specimen | ||||||
| recombined as Siphonalia devexus | |||||||
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Gastropoda
- Naticidae
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Naticidae indet.
Guilding 1834
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Gastropoda
- Opisthobranchia
- Retusidae
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Retusa conulus
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Gastropoda
- Heterostropha
- Acteonidae
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Acteon sp.
Montfort 1810
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1 specimen | ||||||
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Bivalvia
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Bivalvia indet.
Linnaeus 1758
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1 specimen | ||||||
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Bivalvia
- Carditida
- Crassatellidae
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Marvacrassatella turgidula
(Conrad 1843)
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1 specimen | ||||||
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Marvacrassatella melina
(Conrad 1832)
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6 specimens | ||||||
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Bivalvia
- Carditida
- Carditidae
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Cyclocardia granulata
(Say 1824)
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2 specimens | ||||||
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Bivalvia
- Carditida
- Astartidae
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Astarte cuneiformis
Conrad 1840
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3 specimens | ||||||
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Bivalvia
- Lucinida
- Lucinidae
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Parvilucina crenulatus
(Conrad 1840)
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| recombined as Parvilucina crenulata | |||||||
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Parvilucina crenulatus
(Conrad 1840)
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1 specimen | ||||||
| recombined as Parvilucina crenulata | |||||||
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Bivalvia
- Poromyida
- Poromyidae
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Poromya subovata
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Bivalvia
- Hiatellida
- Hiatellidae
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Panopea americana
(Conrad 1838)
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2 specimens | ||||||
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Bivalvia
- Pholadida
- Corbulidae
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Varicorbula elevata
(Conrad 1838)
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6 specimens | ||||||
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Caryocorbula inaequalis
(Say 1824)
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1 specimen | ||||||
| original and current combination Corbula inaequalis | |||||||
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Bicorbula idonea
(Conrad 1833)
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15 specimens | ||||||
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Bivalvia
- Cardiida
- Veneridae
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Veneridae indet.
Rafinesque 1815
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2 specimens | ||||||
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Melosia staminea
(Conrad 1838)
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5 specimens | ||||||
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Bivalvia
- Cardiida
- Mactridae
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Mactridae indet.
Lamarck 1809
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1 specimen | ||||||
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"Spisula" subcuneata
(Conrad 1838)
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1 specimen | ||||||
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Bivalvia
- Cardiida
- Cardiidae
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Chesacardium craticuloides
(Conrad 1845)
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2 specimens | ||||||
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Bivalvia
- Cardiida
- Semelidae
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Semele carinata
(Conrad 1830)
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1 specimen | ||||||
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Bivalvia
- Cardiida
- Tellinidae
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Angulus sp.
Megerle 1811
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1 specimen | ||||||
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Bivalvia
- Arcida
- Glycymerididae
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Glycymeris parilis
(Conrad 1843)
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8 individuals | ||||||
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Bivalvia
- Arcida
- Arcidae
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Dallarca subrostrata
(Conrad 1841)
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5 specimens | ||||||
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Bivalvia
- Ostreida
- Pinnidae
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Atrina harrisi
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2 specimens | ||||||
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Bivalvia
- Ostreida
- Malleidae
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Isognomon (Hipochaeta) sp.
Lightfoot 1786
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2 specimens | ||||||
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Bivalvia
- Pectinida
- Anomiidae
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Anomia aculeata
Müller 1776
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1 specimen | ||||||
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Bivalvia
- Pectinida
- Pectinidae
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Chesapecten coccymeus
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6 specimens | ||||||
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Scaphopoda
- Gadilida
- Gadilidae
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Cadulus thallus
(Conrad 1834)
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Scaphopoda
- Dentaliida
- Dentaliidae
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Dentalium sp.
Linnaeus 1758
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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 |
| Museum repositories: | YPM |
| Collection method comments: COLLECTOR: Unknown collector. REPOSITORY: YPM. FIDELITY: High ecologic fidelity. | |
| Taxonomic list comments:TAXONOMY: Identified by A. Hendy; nomenclature based on revision of Gardner (1943) [PBDB Ref# 16984]and Ward (1992) [16985]. | |
Metadata
| Also known as: | YPM-6 | ||
| Database number: | 68975 | ||
| Authorizer: | A. Hendy | Enterer: | A. Hendy |
| Modifier: | G. Varnham | Research group: | marine invertebrate |
| Created: | 2007-02-14 14:26:56 | Last modified: | 2022-03-03 04:16:31 |
| Access level: | authorizer only | Released: | 2008-02-14 14:26:56 |
| 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] |