78SK35 - Unit 3: Serravallian, Maryland
collected by Kidwell 1978
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Bivalvia
- Carditida
- Astartidae
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Astarte thisphila
Glenn 1904
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5 individuals | |||||||||
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Bivalvia
- Carditida
- Crassatellidae
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Eucrassatella sp.
Iredale 1924
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3 individuals | |||||||||
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Bivalvia
- Lucinida
- Lucinidae
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Megaxinus anodonta
(Say 1824)
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1 individual | |||||||||
| recombined as Stewartia anodonta | ||||||||||
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Bivalvia
- Hiatellida
- Hiatellidae
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Hiatella arctica
(Linnaeus 1767)
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1 individual | |||||||||
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Panopea sp.
(Menard 1807)
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Bivalvia
- Pholadida
- Corbulidae
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Caryocorbula inaequalis
(Say 1824)
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15 individuals | |||||||||
| original and current combination Corbula inaequalis | ||||||||||
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Bicorbula idonea
(Conrad 1833)
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1 individual | |||||||||
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Bivalvia
- Cardiida
- Mactridae
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Spisula sp.
Gray 1837
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1 individual | |||||||||
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Spisula subparilis
(Conrad 1841)
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20 individuals | |||||||||
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Bivalvia
- Cardiida
- Glossidae
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Glossus sp.
Poli 1795
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2 individuals | |||||||||
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Bivalvia
- Cardiida
- Veneridae
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Veneridae indet.
Rafinesque 1815
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1 individual | |||||||||
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? Petricola sp.
Lamarck 1801
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| or Gari sp. | ||||||||||
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Dosinia acetabulum
(Conrad 1832)
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6 individuals | |||||||||
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Mercenaria sp.
Schumacher 1817
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1 individual | |||||||||
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Mercenaria ? plena
Conrad 1869
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5 individuals | |||||||||
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Mercenaria campechiensis
(Gmelin 1791)
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1 individual | |||||||||
| [entered as Mercenaria campehiensis] | ||||||||||
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Pitar ? subnasuta
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5 individuals | |||||||||
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Bivalvia
- Cardiida
- Cardiidae
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Cerastoderma laqueatum
(Conrad 1830)
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5 individuals | |||||||||
| recombined as Chesacardium laqueatum | ||||||||||
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Bivalvia
- Cardiida
- Semelidae
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Semele carinata
(Conrad 1830)
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2 individuals | |||||||||
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Semele subovata
(Say 1824)
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1 individual | |||||||||
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Bivalvia
- Cardiida
- Tellinidae
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Macoma biplicata
(Conrad 1834)
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3 individuals | |||||||||
| recombined as Florimetis biplicata | ||||||||||
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Bivalvia
- Pectinida
- Pectinidae
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Chesapecten nefrens
Ward and Blackwlder 1975
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16 individuals | |||||||||
| recombined as Chesapecten (Chesapecten) nefrens | ||||||||||
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Bivalvia
- Ostreida
- Malleidae
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Isognomon maxillata
(Lamarck 1819)
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3 individuals | |||||||||
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Bivalvia
- Arcida
- Arcidae
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Anadara staminea
(Say 1832)
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2 individuals | |||||||||
| recombined as Dallarca staminea | ||||||||||
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Bivalvia
- Mytilida
- Mytilidae
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Mytilus incurvus
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3 individuals | |||||||||
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Bivalvia
- Nuculida
- Nuculidae
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Nucula taphria
Dall 1898
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1 individual | |||||||||
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Gastropoda
- Epitoniidae
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Scala sp.
Humphrey
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1 individual | |||||||||
| spelled with current rank as Epitonium (Scala) | ||||||||||
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Gastropoda
- Neotaenioglossa
- Calyptraeidae
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Crucibulum multilineatum
(Conrad 1842)
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30 individuals | |||||||||
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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
- Eulimidae
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Eulima sp.
Risso 1826
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1 individual | |||||||||
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Gastropoda
- Vermetidae
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Vermetus graniferus
(Say 1824)
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| recombined as Serpulorbis granifera | ||||||||||
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Gastropoda
- Neogastropoda
- Buccinidae
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Nassa sp.
Röding 1798
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1 individual | |||||||||
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Gastropoda
- Neogastropoda
- Muricidae
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Ecphora sp.
Conrad 1843
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Gastropoda
- Neogastropoda
- Terebridae
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Terebra sp.
Bruguière 1789
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1 individual | |||||||||
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Gastropoda
- Naticidae
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Lunatia heros
(Say 1822)
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2 individuals | |||||||||
| recombined as Euspira heros | ||||||||||
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Polinices duplicatus
(Say 1822)
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3 individuals | |||||||||
| recombined as Neverita duplicatus | ||||||||||
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Gastropoda
- Trochidae
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Calliostoma sp.
Swainson 1840
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5 individuals | |||||||||
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Scaphopoda
- Gadilida
- Gadilidae
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Cadulus newtonensis
Meyer and Aldrich 1886
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1 individual | |||||||||
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Thecostraca
- Balanomorpha
- Balanidae
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Balanus concavus
Bronn 1831
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70 specimens | |||||||||
| recombined as Concavus concavus | ||||||||||
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Echinoidea
- Clypeasteroida
- Abertellidae
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Abertella aberti
(Conrad 1842)
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Anthozoa
- Scleractinia
- Oculinidae
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Astrhelia plamata
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1 individual | |||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Maryland | County: | Calvert |
| Coordinates: | 38.4° North, 76.4° West (view map) | ||||
| Paleocoordinates: | 38.6° North, 73.5° West | ||||
| Basis of coordinate: | based on nearby landmark | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Neogene | Epoch: | Miocene |
| Stage: | Serravallian | 10 m.y. bin: | Cenozoic 5 |
| Key time interval: | Serravallian | ||
| Age range of interval: | 13.82000 - 11.63000 m.y. ago |
Stratigraphy
| Geological group: | Chesapeake | Formation: | Choptank | Member: | Drumcliff |
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: STRATIGRAPHIC RELATIONS: From Drumcliff Mbr of the Choptank Fm, Chesapeake Grp. AGE: Middle Miocene. STRATIGRAPHIC POSITION: From unit 3. | |||||
Lithology and environment
| Primary lithology: | fine,medium,shelly/skeletal unlithified sandstone |
| Includes fossils? | Y |
| Lithology description: SPECIFIC LITHOLOGY: Hashy, shell-supported fine-medium 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: | taphonomic 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-558 | ||
| Database number: | 79113 | ||
| Authorizer: | A. Hendy | Enterer: | A. Hendy |
| Modifier: | G. Varnham | Research group: | marine invertebrate |
| Created: | 2008-02-25 19:54:49 | Last modified: | 2022-03-07 09:15:12 |
| Access level: | the public | Released: | 2008-02-25 19:54:49 |
| 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] |