Unit 2 (75 ft. below top), upper shale member, Mahantango Fm., New Bloomfield, P (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 9905: 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
very abundant (columnals at base of unit)
Strophomenata
 Productida - Productellidae
"Productella spinulicosta" = Spinulicosta spinulicosta
"Productella spinulicosta" = Spinulicosta spinulicosta Hall 1857
present
 Orthotetida - Schuchertellidae
Schuchertella variabilis
 Strophomenida - Leptostrophiidae
Protoleptostrophia perplana
Protoleptostrophia perplana Conrad 1839
common
Rhynchonellata
 Spiriferida - Cyrtinopsidae
"Delthyris sculptilis" = Megakozlowskiella sculptilis
"Delthyris sculptilis" = Megakozlowskiella sculptilis Hall 1843
present
 Spiriferida - Mucrospiriferidae
Mucrospirifer mucronatus
Mucrospirifer mucronatus Conrad 1841
common
 Spiriferida - Spinocyrtiidae
Mediospirifer audaculus
Mediospirifer audaculus Conrad 1842
common
  - Tropidoleptidae
Tropidoleptus carinatus
Tropidoleptus carinatus Conrad 1839
abundant
 Rhynchonellida - Camarotoechiidae
Camarotoechia sp.
Camarotoechia sp. Hall and Clarke 1893
abundant
 Orthida - Rhipidomellidae
Rhipidomella leucosia, Rhipidomella vanuxemi
Rhipidomella vanuxemi Hall 1857
common
Stenolaemata
 Cystoporida - Sulcoreteporidae
Sulcoretepora cf. incisurata
Bivalvia
 Modiomorphida - Modiomorphidae
Modiomorpha concentrica
Modiomorpha concentrica Conrad 1838 clam
present
Trilobita
 Phacopida - Homalonotidae
Trimerus (Dipleura) dekayi
Trimerus (Dipleura) dekayi Green 1832 trilobite
common