Unit 2 (top of unit), upper shale member, Mahantango Fm., New Bloomfield, PA (Devonian of the United States)

Where: Pennsylvania (40.4° N, 77.2° W: paleocoordinates 39.1° S, 25.5° W)

• small collection-level geographic resolution

When: Upper shale Member (Mahantango Formation), Givetian (387.7 - 382.7 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; gray, green, argillaceous siltstone

• siltstone, argillaceous, medium greenish gray in 1-18 inch beds

Collection methods: surface (in situ),

Primary reference: 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]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 9897: authorized by Arnold Miller, entered by Karen Layou on 30.01.2001

Creative Commons license: CC BY (attribution)

Taxonomic list

• 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)
Show authors, comments, and common names
Crinoidea
  -
Crinoidea indet.
Crinoidea indet. Miller 1821 Sea lily
common (columnals)
Strophomenata
 Strophomenida - Chonetidae
Chonetes sp.
Chonetes sp. Fischer de Waldheim 1830
abundant
 Strophomenida - Strophodontidae
"Stropheodonta demissa" = Strophodonta (Strophodonta) demissa
"Stropheodonta demissa" = Strophodonta (Strophodonta) demissa Conrad 1842
present
Rhynchonellata
  - Tropidoleptidae
Tropidoleptus carinatus
Tropidoleptus carinatus Conrad 1839
abundant
 Orthida - Rhipidomellidae
Rhipidomella vanuxemi
Rhipidomella vanuxemi Hall 1857
present
Lophophorata
 Tentaculitida - Tentaculitidae
Tentaculites attenuatus
Bryozoa
  -
Bryozoa indet.
Bryozoa indet. Ehrenberg 1831
present
Bivalvia
 Nuculanida - Malletiidae
Palaeoneilo muta, Palaeoneilo constricta
Palaeoneilo muta clam
present [entered as Paleoneilo muta]
Palaeoneilo constricta Conrad 1842 clam
common [entered as Paleoneilo constricta]
Trilobita
 Phacopida - Homalonotidae
Trimerus (Dipleura) dekayi
Trimerus (Dipleura) dekayi Green 1832 trilobite
common