Where: Glacier County, Montana (48.6° N, 113.0° W: paleocoordinates 53.0° N, 74.7° W)
• coordinate based on nearby landmark
• small collection-level geographic resolution
When: Scaphites depressus ammonoid zone, Marias River Shale Formation, Late/Upper Coniacian (89.3 - 85.8 Ma)
• bed-level stratigraphic resolution
Environment/lithology: marine; lithified shale
Size class: macrofossils
Preservation: cast, mold/impression
Primary reference: I. Walaszczyk and W. A. Cobban. 2006. Palaeontology and stratigraphy of the Middle-Upper Coniacian and Santonian inoceramids of the US Western Interior. Acta Geologica Polonica 56(3):241-348 [W. Kiessling/U. Merkel]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 100150: authorized by Wolfgang Kiessling, entered by Uta Merkel on 30.11.2010
Creative Commons license: CC BY (attribution)
Taxonomic list
| Bivalvia | |
Magadiceramus soukupi, Sphenoceramus cf. latisulcatus, Sphenoceramus canaliculatus, Volviceramus involutus, Inoceramus undabundus, Inoceramus sokolovi n. sp., Inoceramus gibbosus, Inoceramus cf. frechi
Volviceramus involutus Sowerby 1828 clam
Inoceramus undabundus Meek and Hayden 1862 clam
Inoceramus sokolovi n. sp. Walaszczyk and Cobban 2006 clam
Inoceramus gibbosus Schlüter 1877 clam
Inoceramus cf. frechi Flegel 1905 clam | |