Unit 9, Montebello Member, Mahantango Fm., Marysville, Perry Co., PA (Devonian of the United States)

Where: Perry County, Pennsylvania (40.3° N, 76.9° W: paleocoordinates 39.3° S, 25.3° W)

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

• group of beds-level stratigraphic resolution

Environment/lithology: marine; gray, argillaceous sandstone

• sandstone, fine-grained, medium gray, in 1-2 foot and 4-5 foot crossbeds; sandstone, argillaceous, medium gray, 2-3 inch regular to undulose 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 9667: authorized by Arnold Miller, entered by Karen Layou on 10.01.2001

Creative Commons license: CC BY (attribution)

Taxonomic list

• Relative abundance information: present (one 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
 Strophomenida - Leptostrophiidae
Protoleptostrophia perplana
Protoleptostrophia perplana Conrad 1839
abundant
Rhynchonellata
 Spiriferida - Spiriferidae
Spirifer sp.
Spirifer sp. Sowerby 1818
very abundant
 Spiriferida - Spinocyrtiidae
Mediospirifer sp.
  - Tropidoleptidae
Tropidoleptus carinatus
Tropidoleptus carinatus Conrad 1839
common
 Rhynchonellida - Trigonirhynchiidae
"Camarotoechia ? congregata" = Cupularostrum congregata
"Camarotoechia ? congregata" = Cupularostrum congregata Conrad 1841
very abundant
Bivalvia
 Ostreida - Pterineidae
Glyptodesma ? erectum
Glyptodesma ? erectum oyster
present
Anthozoa
 Rugosa -
Rugosa indet.
Rugosa indet. horn coral
common