Also known as La Rocque Locality 54: Lake Huron Beach north Rockport Qrry 0.5 miles N Alpena:Presque Isle Co
Where: Alpena County, Michigan (45.2° N, 83.4° W)
• Paleocoordinates: 28.4° S, 51.1° W (Wright 2013)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Polygnathus ensensis conodont zone, Emanuella Member (Rogers City Formation), Eifelian (393.3 - 387.7 Ma)
• Cazenovia
• group of beds-level stratigraphic resolution
Environment/lithology: limestone
Size class: macrofossils
Preservation: cast
Reposited in the UMMP
Primary reference: A. La Rocque. 1949. New uncoiled gastropods from the Middle Devonian of Michigan and Manitoba. Contributions from the Museum of Paleontology, University of Michigan 7(7):113-122 [P. Wagner/P. Wagner]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 85516: authorized by Pete Wagner, entered by Pete Wagner on 05.01.2009
Creative Commons license: CC0 (CC0)
Taxonomic list
| Gastropoda | |
"Straparollus (Straparollus) cottrelli n. sp." = Pseudomphalotrochus cottrelli, Mastigospira ingens n. sp., Mastigospira intermedia n. sp.
"Straparollus (Straparollus) cottrelli n. sp." = Pseudomphalotrochus cottrelli Linsley and Yochelson 1973 snail I think that this is the type locality, but it is not 100% clear.
Mastigospira ingens n. sp. La Rocque 1949 snail
Mastigospira intermedia n. sp. La Rocque 1949 snail | |