Unit 2, Tully Member, Harrell 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: Tully Member (Harrell Formation), Givetian (387.7 - 382.7 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; gray, silty claystone

• claystone, silty, light to 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 9884: 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)
Bivalvia
 Pectinida - Pterinopectinidae
Pterinopecten hermes Hall 1884 scallop
common
Strophomenata
 Strophomenida - Chonetidae
Rhynchonellata
 Orthida - Rhipidomellidae
Rhipidomella vanuxemi Hall 1857
common
 Spiriferinida - Cyrtinidae
Cyrtina hamiltonensis Hall 1857
abundant
 Spiriferida -
Pustulatia pustulosa Hall 1860
abundant
 Spiriferida - Mucrospiriferidae
Bryozoa
  -
Bryozoa indet. Ehrenberg 1831
abundant
Stenolaemata
 Cystoporata -
Fistuliporoidea indet. Astrova 1964
common
 Cryptostomata - Fenestellidae
 Cystoporida - Sulcoreteporidae
Ostracoda
 Palaeocopida - Beyrichiidae
Hibbardia lacrimosa Kesling 1953 ostracod
abundant
Crinoidea
  -
Crinoidea indet. Miller 1821 Sea lily
very abundant (columnals at base of unit)