Kap Calhoun (Ordovician of Greenland)

Also known as Cape Calhoun Beds Cephalopods of Northwest Greenland

Where: Washington Land, Greenland (80.1° N, 67.0° W: paleocoordinates 1.9° N, 32.3° W)

• coordinate estimated from map

• local area-level geographic resolution

When: Cape Calhoun Formation, Cautleyan (449.2 - 448.8 Ma)

• Cape Calhoun beds. Rasmussen gives this as Pusbillian to Cautleyan, but with Troedsson's fossil beds from the upper part.

• group of beds-level stratigraphic resolution

Environment/lithology: offshore ramp; fine-grained, argillaceous limestone

• The Cape Calhoun facies is a fine-grained marly limestone that has been interpreted as deposited in deeper water settings (Higgins et al. 1991).

Size class: macrofossils

Primary reference: A. K. Miller, W. Youngquist, and C. Collinson. 1954. Ordovician cephalopod fauna of Baffin Island. Geological Society of America Memoir 62:1-234 [S. Holland/T. Hanson/T. Hanson]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 24162: authorized by Steven Holland, entered by Tori Hanson on 01.08.2002, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
 Rhombifera - Glyptocystitidae
Glyptocystites groenlandicus n. sp.1
Glyptocystites groenlandicus n. sp.1 Paul 1976
 Rhombifera - Cheirocrinidae
Cheirocystella sp.1
Cheirocystella sp.1 Paul 1972
 Rhombifera - Macrocystellidae
? Macrocystella sp.1
? Macrocystella sp.1 Callaway 1877
Tergomya
 Archinacellida - Archinacellidae
"Palaeacmaea cf. humilis" = Floripatella humilis2
"Palaeacmaea cf. humilis" = Floripatella humilis2 Ulrich and Scofield 1897
Cephalopoda
 Discosorida - Cyrtogomphoceratidae
Cyrtogomphoceras sp.
Cyrtogomphoceras sp. Foerste 1924
 Discosorida - Westonoceratidae
? Westonoceras sp., "Cyrtoceras cornulum" = Westonoceras cornulum2, "? Thuleoceras baffinense" = Westonoceras baffinense2
? Westonoceras sp. Foerste 1924
"Cyrtoceras cornulum" = Westonoceras cornulum2 Schuchert 1900
"? Thuleoceras baffinense" = Westonoceras baffinense2 Schuchert 1900
 Multiceratoidea - Apsidoceratidae
Charactoceras sp.
Charactoceras sp. Foerste 1924
 Oncocerida - Diestoceratidae
Diestoceras sp.
Diestoceras sp. Foerste 1924
 Endocerida - Endoceratidae
Endoceras baffinense
Endoceras baffinense Foerste 1928
 Actinocerida - Actinoceratidae
Kochoceras cuneiforme n. gen. n. sp.2, Actinoceras ruedemanni2
Kochoceras cuneiforme n. gen. n. sp.2 Troedsson 1926
Actinoceras ruedemanni2
Actinoceras ruedemanni clarki
 Actinocerida - Gonioceratidae
Lambeoceras nudum2
Lambeoceras nudum2 Troedsson 1928
 Orthocerida - Proteoceratidae
"Ephippiorthoceras modestum" = Ephippiorthoceras dowlingi
"Ephippiorthoceras modestum" = Ephippiorthoceras dowlingi Foerste and Savage 1927
 Orthocerida - Tripteroceratidae
Allumettoceras sp., "Lambeoceras leveannulatum n. sp." = Rasmussenoceras leveannulatum2
Allumettoceras sp. Foerste 1926
"Lambeoceras leveannulatum n. sp." = Rasmussenoceras leveannulatum2 Troedsson 1926
Lambeoceras leve-annulatum
 Pseudorthocerida - Spyroceratidae
Spyroceras baffinense
Spyroceras baffinense Schuchert 1900
Gastropoda
 Bellerophontida - Bucaniidae
Phragmolites hyperboreus n. sp.2
Phragmolites hyperboreus n. sp.2 Troedsson 1928 snail
 Euomphalina - Macluritidae
"Maclurites crassus" = Maclurites crassa2, "Maclurina manitobensis" = Maclurina manitobensis2, "Maclurites major" = Maclurina manitobensis3
"Maclurites crassus" = Maclurites crassa2 Ulrich and Scofield 1897 snail
"Maclurina manitobensis" = Maclurina manitobensis2 Whiteaves 1890 snail
"Maclurites major" = Maclurina manitobensis3 Whiteaves 1890 snail
includes Maclurites acutus major
 Murchisoniina - Trochonematidae
"Trochonema umbilicatum" = Trochonema umbilicata2
"Trochonema umbilicatum" = Trochonema umbilicata2 Hall 1847 snail
 Murchisoniina - Lophospiridae
"Lophospira perforata" = Lophospira perangulata2
"Lophospira perforata" = Lophospira perangulata2 Hall 1847 snail
 Murchisoniina - Subulitidae
Fusispira cf. subbrevis2, Fusispira inflata2
Fusispira cf. subbrevis2 Ulrich and Scofield 1897 snail
Fusispira inflata2 Meek and Worthen 1870 snail
 Murchisoniina - Hormotomidae
"Coelocaulus neglectus" = Hormotoma neglecta2, Hormotoma minnesotensis4
"Coelocaulus neglectus" = Hormotoma neglecta2 Ulrich and Scofield 1897 snail
Coelocaulus neglectus major
Hormotoma minnesotensis4 Ulrich and Scofield 1897 snail
Lophospira augustina minnesotensis
 Murchisoniina - Murchisoniidae
"Hormotoma cf. canadensis" = Cyrtostropha salteri canadensis3
"Hormotoma cf. canadensis" = Cyrtostropha salteri canadensis3 Ulrich and Scofield 1897 snail
Hormotoma cf. salteri canadensis
 Murchisoniina - Eotomariidae
Liospira americana2, Liospira progne2
Liospira americana2 Billings 1860 snail
Liospira progne2 Billings 1860 snail
Bivalvia
 Ostreida - Pterineidae
? Pterinea calhounensis2
1Paul 1976; 2Troedsson 1928; 3Wagner 2020; 4Wagner 2023