GSC Locality #C-16775, Cornwallis Island, Arctic Archipeligo (Silurian of Canada)

Where: Northwest Territories, Canada (75.1° N, 95.0° W: paleocoordinates 2.2° N, 32.0° W)

• coordinate based on political unit

• outcrop-level geographic resolution

When: Monograptus ludensis graptolite zone, Cape Phillips Formation, Homerian (430.5 - 427.4 Ma)

• "upper Wenlock"

• bed-level stratigraphic resolution

Environment/lithology: marine; calcareous limestone and shale

• "ls concretion in thinly bedded dark gray argillaceous ls, calcareous shales, calcisiltites, and min[illeg.] ls's. relatively deep water outboard of carbonate shelf edge BA6"

Size class: macrofossils

Reposited in the GSC

Primary reference: J., J.r. Pojeta and B. S. Norford. 1987. A Bohemian-type Silurian (Wenlock) pelecypod faunule from arctic Canada. Journal of Paleontology 61(3):508-520 [M. Uhen/J. Ju/P. Wagner]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 497: authorized by Jack Sepkoski, entered by Mike Sommers on 17.12.1998, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

• "J. Pojeta, Jr. and B.S. Norford, 1987. A Bohemian-type Sil (Wenlock) pelecypod faunule from arctic Can. J.Paleo 61:508-520. believe assemblage is mixed but only a small portion redeposited from adjacent shelf"
Trilobita
 Ptychopariida -
Ptychopariida indet. Swinnerton 1915 trilobite
sculluid
 Phacopida - Cheiruridae
Deiphon sp., Didrepanon sp., "Sphaerexochus aff. mirus" = Sphaerexochus calvus
Deiphon sp. Barrande 1846 trilobite
Didrepanon sp. Lane 1971 trilobite
"Sphaerexochus aff. mirus" = Sphaerexochus calvus Mc Coy 1846 trilobite
 Phacopida - Encrinuridae
Fragiscutum sp. Whittington and Campbell 1967 trilobite
 Corynexochida - Styginidae
Cybantyx sp. Lane and Thomas 1978 trilobite
 Odontopleurida -
Odontopleurida indet. Whittington 1959 trilobite
odontopleurid
 Odontopleurida - Odontopleuridae
Dudleyaspis sp. Prantl and Pribyl 1949 trilobite
 Proetida -
Proetida indet. Fortey and Owens 1975 trilobite
proetid
 Proetida - Brachymetopidae
Radnoria sp. Wasmann 1894 trilobite
 Proetida - Aulacopleuridae
Harpidella sp. M'Coy 1849 trilobite
 Proetida - Proetidae
? Schizoproetus sp. Richter 1912 trilobite
originally entered as "?Schizoproetus sp."
 Lichida - Lichidae
Dicranogmus skinneri Perry and Chatterton 1977 trilobite
Dicranopeltis sp. Hawle and Corda 1847 trilobite
Strophomenata
 Strophomenida -
Strophomenida indet. Opik 1934
new strophomenid
 Strophomenida - Aegiromenidae
aff. Aegiria sp. Opik 1933
originally entered as "aff. Aegirina sp."
 Strophomenida - Rafinesquinidae
Leptaena sp. Dalman 1828
 Orthotetida - Chilidiopsidae
Morinorhynchus sp. Havlicek 1965
Rhynchonellata
 Protorthida - Skenidiidae
Skenidioides sp. Schuchert and Cooper 1931
 Spiriferida -
Spiriferida indet. Waagen 1883
plicate ambocoelid
 Rhynchonellida - Rhynchonellidae
Rhynchonellidae indet. Gray 1848
indet. rhynchonellid - originally entered as "Rhynchonellida indet."
 Pentamerida - Gypidulidae
Gypidula sp. Hall 1867
 Pentamerida - Subrianidae
Conchidium sp. Oehlert 1887
 Pentamerida - Clorindidae
Antirhynchonella sp. Oehlert 1887
 Orthida - Draboviidae
Salopina sp. Boucot 1960
 Orthida - Dicoelosiidae
Dicoelosia sp. King 1850
 Orthida - Dalmanellidae
Isorthis sp. Kozlowski 1929
 Orthida - Hesperorthidae
Ptychopleurella sp. Schuchert and Cooper 1931
Dolerorthis sp. Schuchert and Cooper 1931
 Atrypida - Septatrypidae
"? Dubaria sp." = Septatrypa
"? Dubaria sp." = Septatrypa Kozlowski 1929
originally entered as "? Dubaria sp."
 Atrypida - Atrypidae
Spinatrypa sp. Stainbrook 1951
 Atrypida - Atrypinidae
Gracianella sp. Johnson and Boucot 1967
 Atrypida - Anazygidae
Bivalvia
  -
Bivalvia indet. Linnaeus 1758 clam
grammysiid
 Ostreida - Pterineidae
Leptodesma sp. Hall 1883 oyster
 Ostreida - Rhombopteriidae
Rhombopteria cf. mira Barrande 1881 oyster
 Cyrtodontida - Slavidae
Slava sp. Barrande 1881 clam
Conodonta
 Ozarkodinida - Spathognathodontodae
"Ozarkodina excavata" = Wurmiella excavata
"Ozarkodina excavata" = Wurmiella excavata Branson and Mehl 1933 conodont
Ozarkodina excavata excavata
 Ozarkodinida -
Ozarkodina confluens Rhodes 1953 conodont
 Ozarkodinida - Kockelellidae
Kockelella variabilis Walliser 1957 conodont
 Panderodontida - Panderodontidae
Panderodus sp. Ethington 1959 conodont
Pteraspidomorphi
 Pteraspidomorphes -
Pteraspidomorpha
 Cyathaspidei - Traquairaspidae
"Traquairaspis cf. lemniscata" = Phialaspis
"Traquairaspis cf. lemniscata" = Phialaspis
  - Cyathaspididae
Vernonaspis sp.
originally entered as "Veronaspis sp."
  - Ariaspididae
Ariaspis "n. sp." Denison 1963
Ariaspis cf. ornata Denison 1963
2 species
unclassified
  -
Vertebrata indet. Lamarck 1801
2 species, cyathispidid
Pterobranchia
 Graptoloidea - Retiolitidae
Spinograptus sp. graptolite
 Graptoloidea - Monograptidae
"Monograptus aff. ludensis" = Colonograptus ludensis
"Monograptus aff. ludensis" = Colonograptus ludensis Murchison 1839 graptolite
2 species