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Rogers City - Atrypa, Presque Isle County, Michigan, USA

Formation	Rogers City
Member	Atrypa
Age:	393 - 388 Ma Devonian
Interval	Eifelian
Lithology	dolomite, "limestone"
Number of Collections	2
Number of Occurrences	8

Recorded Sample Locations

Location	Region	Stratigraphic Name
Locality 42: Zone 3	Presque Isle County, Michigan, USA	Rogers City - Atrypa
Zone 5	Presque Isle County, Michigan, USA	Rogers City - Atrypa

Associated Units

Stratigraphic Name	Age	Lithology	Occurrence Records
Rogers City - Emanuella	393 - 388 Ma Devonian	limestone, dolomite	21
Rogers City - Gypidula	393 - 388 Ma Devonian	limestone	7
Rogers City - Omphalocirrus	393 - 388 Ma Devonian	limestone	35

Recorded Fossils

Accepted Name	Type	Hierarchy	Age
Bellerophon pelops species	7	Animalia : Mollusca : Gastropoda : Bellerophontidae : Bellerophon : *Bellerophon pelops*	393.3 - 387.7 Ma Devonian
Mastigospira ingens species	7	Animalia : Mollusca : Gastropoda : Euomphalidae : Mastigospira : *Mastigospira ingens*	393.3 - 387.7 Ma Devonian
Kitikamispira speciosum species	7	Animalia : Mollusca : Gastropoda : Euomphalina : Kitikamispira : *Kitikamispira speciosum*	393.3 - 387.7 Ma Devonian
Hypomphalocirrus rugosus species	7	Animalia : Mollusca : Gastropoda : Omphalocirridae : Omphalocirrus : *Hypomphalocirrus rugosus*	393.3 - 387.7 Ma Devonian
Straparollus cottrelli species	7	Animalia : Mollusca : Gastropoda : Omphalotrochidae : Pseudomphalotrochus : *Straparollus cottrelli*	393.3 - 387.7 Ma Devonian
Buechelia tyrrelli species	7	Animalia : Mollusca : Gastropoda : Murchisoniina : Gosseletinidae : Buechelia : *Buechelia tyrrelli*	393.3 - 387.7 Ma Devonian
Loxonema cingulatum species	7	Animalia : Mollusca : Gastropoda : Loxonematidae : Clathronema : *Loxonema cingulatum*	393.3 - 387.7 Ma Devonian

References

Radabaugh R. E. (1942) The Middle Devonian Rogers City Limestone and its gastropod fauna, The Middle Devonian Rogers City Limestone and its gastropod fauna, 1-166

La Rocque A. (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

Linsley R. M., Yochelson E. L. (1973) Devonian carrier shells (Euomphalidae) from North America and Germany, United States Geological Survey Professional Paper 824, 1-23

Linsley R. M. (1973) The Omphalocirridae: a new family of Palaeozoic Gastropoda which exhibits sexual dimorphism, Memoirs of the National Museum of Victoria 39 1, 33-54

Data courtesy of: PBDB: The Paleobiology Database, Creative Commons CC-BY licenced. , GBIF: the Global Biodiversity Information Facility, various licences, iDigBio, various licences, and EOL: The Encyclopedia of Life (Open Data Public Domain). Because fossils are made of minerals too!

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