Unit 3 (84-86 ft. below top), upper shale member, Mahantango Fm., New Bloomfield (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, silty claystone

• claystone, slightly silty, medium olive gray

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 9907: 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
Trilobita
 Phacopida - Homalonotidae
Trimerus (Dipleura) dekayi
Trimerus (Dipleura) dekayi Green 1832 trilobite
common
Bivalvia
 Ostreida - Pterineidae
Actinopteria decussata
Actinopteria decussata oyster
present
 Pectinida - Pterinopectinidae
Pterinopecten (Pseudaviculopecten) princeps
 Modiomorphida - Carydiidae
"Nucula bellistriata" = Carydium bellastriatum
"Nucula bellistriata" = Carydium bellastriatum Conrad 1841 clam
present
Rhynchonellata
 Spiriferida - Mucrospiriferidae
Mucrospirifer mucronatus
Mucrospirifer mucronatus Conrad 1841
common
  - Tropidoleptidae
Tropidoleptus carinatus
Tropidoleptus carinatus Conrad 1839
present
Strophomenata
 Strophomenida - Chonetidae
Devonochonetes coronatus, Devonochonetes scitulus
Devonochonetes coronatus Hall 1857
present
Devonochonetes scitulus Hall 1857
abundant