Unit 1 (13 ft. below top), upper shale member, Mahantango Fm., New Bloomfield, P: Givetian, Pennsylvania
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
|
||||||||||
Thamnoporoidea indet.
|
||||||||||
present | ||||||||||
Crinoidea
|
||||||||||
Crinoidea indet.
Miller 1821
|
||||||||||
abundant (columnals) | ||||||||||
Gastropoda
|
||||||||||
Gastropoda indet.
Cuvier 1795
|
||||||||||
present | ||||||||||
Bivalvia
- Nuculanida
- Malletiidae
|
||||||||||
Palaeoneilo constricta
(Conrad 1842)
|
||||||||||
common [entered as Paleoneilo constricta] | ||||||||||
Strophomenata
- Strophomenida
- Chonetidae
|
||||||||||
Devonochonetes coronatus
(Hall 1857)
|
||||||||||
common | ||||||||||
Rhynchonellata
- Orthida
- Rhipidomellidae
|
||||||||||
Rhipidomella vanuxemi
(Hall 1857)
|
||||||||||
present | ||||||||||
Rhynchonellata
- Spiriferida
- Elythidae
|
||||||||||
Elytha fimbriata
|
||||||||||
synonym of Elita | ||||||||||
present | ||||||||||
Rhynchonellata
- Atrypida
- Atrypidae
|
||||||||||
Atrypa reticularis
(Linnaeus 1758)
|
||||||||||
original and current combination Anomia reticularis | ||||||||||
present | ||||||||||
Rhynchonellata
- Rhynchonellida
- Camarotoechiidae
|
||||||||||
Camarotoechia sp.
Hall and Clarke 1893
|
||||||||||
present | ||||||||||
Lingulata
- Lingulida
- Discinidae
|
||||||||||
Orbiculoidea tullia
|
||||||||||
present | ||||||||||
unclassified
|
||||||||||
Bryozoa indet.
Ehrenberg 1831
|
||||||||||
present | ||||||||||
Stenolaemata
- Cryptostomata
- Fenestellidae
|
||||||||||
Fenestella cf. emaciata
|
||||||||||
present | ||||||||||
Fenestella cf. sinuosa
|
||||||||||
present | ||||||||||
Stenolaemata
- Cystoporida
- Sulcoreteporidae
|
||||||||||
Sulcoretepora cf. incisurata
|
||||||||||
abundant | ||||||||||
Taeniopora exigua
Nicholson 1887
|
||||||||||
common | ||||||||||
unclassified
|
||||||||||
Schizodiscus capsa
|
||||||||||
present | ||||||||||
Trilobita
- Phacopida
- Phacopidae
|
||||||||||
Phacops rana
(Green 1832)
|
||||||||||
recombined as Eldredgeops rana | ||||||||||
present | ||||||||||
see common names |
Geography
Country: | United States | State/province: | Pennsylvania |
Coordinates: | 40.4° North, 77.2° West (view map) | ||
Paleocoordinates: | 39.1° South, 25.5° West | ||
Geographic resolution: | small collection |
Time
Period: | Devonian | Epoch: | Middle Devonian |
Stage: | Givetian | 10 m.y. bin: | Devonian 3 | *Local age/stage: | Erian |
Key time interval: | Givetian | ||
Age range of interval: | 387.70000 - 382.70000 m.y. ago | ||
* legacy (obsolete) database fields |
Stratigraphy
Geological group: | Hamilton | Formation: | Mahantango | Member: | Upper shale |
Local section: | New Bloomfield | Local bed: | unit 1--13 ft. below top | ||
Local order: | top to bottom | ||||
Stratigraphic resolution: | group of beds | ||||
Stratigraphy comments: 13 feet below top of unit |
Lithology and environment
Primary lithology: | gray claystone | ||
Lithology description: claystone, micaceous, light to medium olive gray, chippy | |||
Environment: | marine indet. | Tectonic setting: | foreland basin |
Taphonomy
Collection methods and comments
Collection methods: | surface (in situ),field collection |
Reason for describing collection: | paleoecologic analysis |
Taxonomic list comments:Relative abundance info: present (1 specimen collected), common (2-10 specimens collected), abundant (more than 10 specimens collected), very abundant (sample extremely rich in a given species) |
Metadata
Database number: | 9886 | ||
Authorizer: | A. Miller | Enterer: | K. Layou | Research group: | marine invertebrate |
Created: | 2001-01-30 08:48:20 | Last modified: | 2001-08-30 17:52:51 |
Access level: | the public | Released: | 2001-01-30 12:01:00 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
841. | R. L. Ellison. 1965. Stratigraphy and Paleontology of the Mahantango Formation in south-central Pennsylvania. Pennsylvania Geological Survey Bulletin G48 1-298 [A. Miller/K. Layou] |