Clitambonites Beds, near Cannon Falls (Ordovician of the United States)

Where: Minnesota (44.5° N, 92.9° W: paleocoordinates 18.3° S, 63.0° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Dicranograptus clingani graptolite zone, Prosser Formation, Shermanian (460.9 - 449.5 Ma)

• "Clitambonites Bed of Lower Trenton Limestone",in Bassler (1911)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; limestone

Size classes: macrofossils, mesofossils

Primary reference: E. O. Ulrich and W. H. Scofield. 1897. The Lower Silurian Gastropoda of Minnesota. The Paleontology of Minnesota 39(2):813-1081 [P. Wagner/P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 174070: authorized by Pete Wagner, entered by Pete Wagner on 27.10.2015

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Solemyida - Ctenodontidae
Ctenodonta subnasuta n. sp.1 Ulrich 1894 clam
 Cyrtodontida - Cyrtodontidae
"Whitella praecipita n. sp." = Cyrtodontula1, Cyrtodonta grandis1
"Whitella praecipita n. sp." = Cyrtodontula1 clam
Whitella n. sp. præcipita
Cyrtodonta grandis1 Ulrich 1890 clam
 Megalodontida - Plethocardiidae
Plethocardia suberecta1 Ulrich 1894 clam
 Modiomorphida - Modiomorphidae
Modiolopsis nana n. sp.1 Ulrich 1894 clam
 Modiomorphida - Allodesmatidae
Allodesma subellipticum n. gen. n. sp.1
Allodesma subellipticum n. gen. n. sp.1 Ulrich 1892 clam
 Unioni - Lyrodesmatidae
Gastropoda
 Bellerophontida - Bucaniidae
"Kokenia costalis n. sp." = Kokenospira costalis, "Bucania lindsleyi" = Loxobucania lindsleyi
"Kokenia costalis n. sp." = Kokenospira costalis Ulrich and Scofield 1897 snail
"Bucania lindsleyi" = Loxobucania lindsleyi Safford 1869 snail
 Murchisoniina - Hormotomidae
"Coelocaulus neglectus" = Hormotoma neglecta
"Coelocaulus neglectus" = Hormotoma neglecta Ulrich and Scofield 1897 snail
Cœlocaulus neglectus
 Murchisoniina - Subulitidae
Fusispira convexa Ulrich and Scofield 1897 snail
Tergomya
 Cyrtonellida - Cyrtolitidae
Cyrtolites (Cyrtolites) minor2 Ulrich and Scofield 1897
Cyrtolites ornatus minor
 Archinacellida - Archinacellidae
Archinacella valida Sardeson 1892