MGS Loc. 90 - Ichusa Creek [Mint Spring Fm]: Rupelian, Mississippi
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Gastropoda
- Heterostropha
- Acteonidae
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Acteon menthafons n. sp.
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MacNeil and Dockery 1984 | |||||||||
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Acteon punctatus n. sp.
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MacNeil and Dockery 1984 | |||||||||
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Gastropoda
- Lepetellida
- Lepetellidae
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Sablea minuta
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MacNeil and Dockery 1984 | |||||||||
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Gastropoda
- Vermetidae
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Serpulorbis sp.
Sasso 1827
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MacNeil and Dockery 1984 | |||||||||
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Gastropoda
- Neogastropoda
- Cochlespiridae
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Tropiscurcula caseyi
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MacNeil and Dockery 1984 | |||||||||
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Gastropoda
- Neogastropoda
- Borsoniidae
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Microdrillia vicksburgella
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MacNeil and Dockery 1984 | |||||||||
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Gastropoda
- Neogastropoda
- Cancellariidae
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Agatrix mississippiensis
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MacNeil and Dockery 1984 | |||||||||
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Olssonella elongata n. sp.
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MacNeil and Dockery 1984 | |||||||||
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Gastropoda
- Neogastropoda
- Olivellidae
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Oliva mississippiensis
Conrad 1848
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MacNeil and Dockery 1984 | |||||||||
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Gastropoda
- Neogastropoda
- Costellariidae
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Microsurcula mentha n. sp.
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MacNeil and Dockery 1984 | |||||||||
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Conomitra vicksburgensis
|
MacNeil and Dockery 1984 | |||||||||
| Conomitra vicksburgensis laevigata | ||||||||||
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Conomitra crenulata
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MacNeil and Dockery 1984 | |||||||||
| Conomitra crenulata modesta | ||||||||||
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Bivalvia
- Nuculida
- Nuculidae
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Nucula vicksburgensis
Conrad 1848
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16 individuals | |||||||||
| C category | ||||||||||
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Bivalvia
- Carditida
- Astartidae
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Astarte menthifontis n. sp.
Dockery 1982
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42 individuals | |||||||||
| C category | ||||||||||
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Bivalvia
- Carditida
- Carditidae
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Venericardia carsonensis
Dall 1903
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42 individuals | |||||||||
| C category | ||||||||||
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Bivalvia
- Lucinida
- Lucinidae
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Lucina posteocurta n. sp.
Dockery 1982
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9 individuals | |||||||||
| R category | ||||||||||
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Myrtea vicksburgensis
(Casey 1903)
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54 individuals | |||||||||
| C category | ||||||||||
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Lucina imbricolamella n. sp.
Dockery 1982
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27 individuals | |||||||||
| C category | ||||||||||
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Bivalvia
- Cardiida
- Sportellidae
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Sportella oblonga
(Conrad 1848)
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4 individuals | |||||||||
| R category | ||||||||||
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Bivalvia
- Cardiida
- Tellinidae
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Tellina subprotexta n. sp.
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57 individuals | |||||||||
| C category | ||||||||||
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Bivalvia
- Cardiida
- Semelidae
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Semelina pilsbryi
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2 individuals | |||||||||
| R category | ||||||||||
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Ervilia exterolaevis n. sp.
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1 individual | |||||||||
| R category | ||||||||||
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Bivalvia
- Cardiida
- Cardiidae
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Trachycardium eversum
(Conrad 1848)
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1 individual | |||||||||
| R category | ||||||||||
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Laevicardium leptorimum n. sp.
Dockery 1982
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1 individual | |||||||||
| R category | ||||||||||
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Agnocardia glebosum
(Conrad 1848)
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1 individual | |||||||||
| R category | ||||||||||
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Trigoniocardia silvacollina n. sp.
Dockery 1982
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1 individual | |||||||||
| R category | ||||||||||
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Nemocardium diversum
(Conrad 1848)
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1 individual | |||||||||
| R category | ||||||||||
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Bivalvia
- Cardiida
- Kelliellidae
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Kelliella rufaripa n. sp.
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3 individuals | |||||||||
| R category | ||||||||||
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Bivalvia
- Cardiida
- Veneridae
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Pitar calcanea
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7 individuals | |||||||||
| R category | ||||||||||
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Pitar aldrichi n. sp.
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10 individuals | |||||||||
| C category | ||||||||||
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Chione victoria
(Dall 1982)
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3 individuals | |||||||||
| R category | ||||||||||
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Bivalvia
- Cardiida
- Ungulinidae
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Diplodonta eburnea
(Conrad 1848)
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8 individuals | |||||||||
| R category | ||||||||||
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Bivalvia
- Pholadida
- Corbulidae
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Corbula laqueata
Casey 1903
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63 individuals | |||||||||
| C category | ||||||||||
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Corbula engonata
Conrad 1848
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12 individuals | |||||||||
| C category | ||||||||||
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Bivalvia
- Hiatellida
- Hiatellidae
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Panopea oblongata
Conrad 1848
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1 individual | |||||||||
| R category | ||||||||||
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Bivalvia
- Poromyida
- Verticordiidae
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Verticordia dalliana
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29 individuals | |||||||||
| C category | ||||||||||
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Bivalvia
- Poromyida
- Cuspidariidae
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Plectodon intastriata
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5 individuals | |||||||||
| R category | ||||||||||
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Bivalvia
- Poromyida
- Spheniopsidae
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Spheniopsis mississippiensis
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13 individuals | |||||||||
| C category | ||||||||||
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Bivalvia
- Mytilida
- Crenellidae
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Crenella fenestra n. sp.
Dockery 1982
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21 individuals | |||||||||
| C category | ||||||||||
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Bivalvia
- Arcida
- Glycymerididae
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Glycymeris suwannensis
Mansfield 1937
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18 individuals | |||||||||
| C category | ||||||||||
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Glycymeris intercostata
(Gabb 1860)
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10 individuals | |||||||||
| C category | ||||||||||
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Bivalvia
- Arcida
- Arcidae
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Scapharca delicatula
(Casey 1903)
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11 individuals | |||||||||
| C category | ||||||||||
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Bivalvia
- Pectinida
- Pectinidae
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Chlamys menthifontis
Glawe 1970
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5 individuals | |||||||||
| R category | ||||||||||
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Eburneopecten subminutus
(Aldrich 1903)
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20 individuals | |||||||||
| C category | ||||||||||
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Bivalvia
- Ostreida
- Ostreidae
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Ostrea sp.
Linnaeus 1758
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1 individual | |||||||||
| R category | ||||||||||
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Ostrea paroxis
Lesueur 1829
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2 individuals | |||||||||
| R category | ||||||||||
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Scaphopoda
- Dentaliida
- Dentaliidae
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Dentalium opaculum
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MacNeil and Dockery 1984 | |||||||||
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unclassified
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Amonia microstriata
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2 individuals | |||||||||
| R category | ||||||||||
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Fustaria sp.
|
MacNeil and Dockery 1984 | |||||||||
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Fustaria menthifonta n. sp.
|
MacNeil and Dockery 1984 | |||||||||
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Tellina lintea
Conrad 1837
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1 individual | |||||||||
| R category | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Mississippi | County: | Smith |
| Coordinates: | 32.0° North, 89.4° West (view map) | ||||
| Paleocoordinates: | 32.3° North, 82.9° West | ||||
| Basis of coordinate: | based on nearby landmark | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Paleogene | Epoch: | Oligocene |
| Stage: | Rupelian | 10 m.y. bin: | Cenozoic 4 |
| *Period: | Early/Lower Tertiary | *Epoch: | Early/Lower oligocene |
| *International age/stage: | Early/Lower Rupelian - Early/Lower - Middle Rupelian | ||
| Key time interval: | Rupelian | ||
| Age range of interval: | 33.9 - 27.82 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Mint Spring | ||||
| Stratigraphic resolution: | formation | ||||
| Stratigraphy comments: The Mint Spring Formation consists of fossiliferous sands that lie disconformably above the estuarine clays and sands of the Forest Hill Formation. This contact is characterized by shell gravels that are largely comprised of the bivalve "Callista", by lithified clay clasts bored by the bivalve "Jouannetia", and by shark and ray teeth. Lithified clay clasts are especially common at the base of the Mint Spring Formation along the Chickasawhay River in Wayne County. Here clay clasts are numerous enough to have produced a cobble bottom on the Mint Spring sea floor. These clasts formed a hard substrate utilized by a variety of encrusting organisms. The sands of the Mint Spring are moderately clean and often show cross-bedding. These sands indicate a near-shore shelf enviroment. At localities 89 and 90 in Smith County these marine sand facies have well-preserved fossils. | |||||
Lithology and environment
| Primary lithology: | poorly lithified conglomeratic,calcareous "limestone" | ||
| Secondary lithology: | wackestone | ||
| Includes fossils? | Y | ||
| Includes fossils? | Y | ||
| Environment: | offshore | Tectonic setting: | passive margin |
Taphonomy
| Modes of preservation: | body,original aragonite,original calcite |
| Size of fossils: | mesofossils |
Collection methods and comments
| Collection excludes: | all microfossils,some macrofossils,difficult macrofossils |
| Collection methods: | bulk,mechanical,field collection |
| Reason for describing collection: | taxonomic analysis |
| Collection method comments: bivalves only. | |
| Taxonomic list comments:list uses catagories. For example, R = rare, 9 valves or less. C = common, 10-99 valves. A = abundant,100+ valves collected.
Categories are listed in the comments field, absolute abundances are given in the abundance field. Since taxa with greater than 99 specimens were not counted with absolute abundances, these were reported with category "A" for abundant. | |
Metadata
| Database number: | 5941 | ||
| Authorizer: | L. Ivany | Enterer: | S. DeLong |
| Modifier: | A. Hendy | Research group: | GCP,marine invertebrate |
| Created: | 2000-01-01 19:05:30 | Last modified: | 2014-08-21 11:48:40 |
| Access level: | the public | Released: | 2000-01-01 19:05:30 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 323. | D. T. Dockery. 1982. Lower Oligocene Bivalvia of the Vicksburg Group in Mississippi. Mississippi Department of Natural Resources Bureau of Geology 123:1-261 [L. Ivany/S. DeLong/M. Uhen] |
Secondary references:
| 447 | F. S. MacNeil and D. T. Dockery. 1984. Lower Oligocene Gastropoda, Scaphopoda, and Cephalopoda of the Vicksburg Group in Mississippi. Mississippi Department of Natural Resources, Bureau of Geology Bulletin 124:1-415 [L. Ivany/E. Kowalski/P. Wagner] |