Unit 2 (2 ft. below top), 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, meidum 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 9899: 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
Gastropoda
 Bellerophontida - Bucanellidae
Crenistriella crenistria
Crenistriella crenistria Hall 1876 snail
present
Bivalvia
 Nuculanida - Cucullellidae
Nuculites oblongatus
Nuculites oblongatus Conrad 1841 clam
common
 Nuculanida - Malletiidae
Palaeoneilo constricta
Palaeoneilo constricta Conrad 1842 clam
present [entered as Paleoneilo constricta]
 Solenida - Orthonotidae
Orthonota undulata
Orthonota undulata Conrad 1841 clam
present
 Cardiida -
Cypricardella tenuistriata
Cypricardella tenuistriata Hall and Whitfield 1869 clam
present
Strophomenata
 Strophomenida - Chonetidae
Devonochonetes scitulus
Devonochonetes scitulus Hall 1857
abundant
Rhynchonellata
  - Tropidoleptidae
Tropidoleptus carinatus
Tropidoleptus carinatus Conrad 1839
present
 Spiriferida - Adolfiidae
"Spirifer tullius" = Allanella tullius
"Spirifer tullius" = Allanella tullius Hall 1867
common
 Spiriferida - Mucrospiriferidae
Mucrospirifer mucronatus
Mucrospirifer mucronatus Conrad 1841
present