GSC C-22187, Baillie-Hamilton Island (Silurian of Canada)

Also known as Brachiopods, Cape Phillips Formation,

Where: Nunavut, Canada (75.8° N, 94.5° W: paleocoordinates 3.5° N, 32.7° W)

• coordinate estimated from map

• local area-level geographic resolution

When: Monograptus riccartonensis zone, Cape Phillips Formation, Sheinwoodian (433.4 - 430.5 Ma)

• According to author, material is from between the murchisoni and lundgreni zones. This would make it Sheinwoodian, although author simply refers to it as Wenlockian.

• formation-level stratigraphic resolution

Environment/lithology: slope; shelly/skeletal limestone and calcareous shale

• "...Formation...represents the slope-to-basinal facies equivalent of coeval platform carbonates that occur to S and E..."

•SEP environmental call based on given info and regional context

• "..Formation consists of shale and thin bedded, laminated siltstone and limestone...Section [with faunas] broadly divisible into two lithofacies: a lower part about 25 m thick, consists mainly of medium grey, thin bedded argillaceous Lst that is variably dolomitic...and an upper part, about 65 m thick, consisting mainly of very dark grey, very thin bedded argillaceous Lst that is markedly bituminous and commonly planar laminated...These beds appear to represent sediment gravity flows that were derived from platform carbonates...some 10 km to the east. The brachiopods and conodonts were obtained from the bioclastic beds and are therefore presumed to be allochthonous."

Preservation: replaced with silica

Reposited in the GSC

Primary reference: N. Zhang. 1989. Wenlockian (Silurian) brachiopods of the Cape Phillips Formation, Baillie Hamilton Island, Arctic Canada: part I. Palaeontographica Abteilung A 206(1-3):49-97 [M. Foote/M. Foote/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 26014: authorized by Michael Foote, entered by Michael Foote on 30.09.2002, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

• List in Part I of monograph (PBDB ref. 7205) covers all the brachiopods, whereas the systematic treatment is spread out through three parts (refs. 7205-7207).
Show authors, comments, and common names
unclassified
  -
Fascizentina rohri
Strophomenata
 Strophomenida - Aegiromenidae
? Chonetoidea cocksi
 Strophomenida - Sowerbyellidae
"Paranisopleurella cooperi" = Eoplectodonta (Ygerodiscus)
"Paranisopleurella cooperi" = Eoplectodonta (Ygerodiscus)
 Strophomenida - Leptaenoideidae
Liljevallia amorpha
 Strophomenida - Furcitellidae
? Laevicyphomena sp., Pentlandina harperi
Pentlandina harperi Zhang 1989
 Strophomenida - Amphistrophiidae
Amphistrophia sp.
Amphistrophia sp. Hall and Clarke 1892
 Strophomenida - Rafinesquinidae
Leptaena sp.
Leptaena sp. Dalman 1828
 Orthotetida - Triplesiidae
Streptis glomerata, Cliftonia contorta
 Orthotetida - Chilidiopsidae
Morinorhynchus miniparvicostellus, Morinorhynchus crispus
Morinorhynchus crispus Lindström 1861
Rhynchonellata
 Pentamerida - Gypidulidae
Caryogyps chattertoni, Amsdenina amsdeni
 Pentamerida - Pentameridae
? Lissocoelina sp., ? Rhipidium sp.
? Lissocoelina sp. Schuchert and Cooper 1931
? Rhipidium sp. Schuchert and Cooper 1931
 Pentamerida - Subrianidae
Spondylopyxis potteri
 Pentamerida - Clorindidae
Clorinda geniculata, Clorinda sp., Barrandina sp.
Clorinda sp. Barrande 1879
 Orthida - Hesperorthidae
Ptychopleurella lenzi, Flabellitesia kessei
Flabellitesia kessei Boucot et al. 1988
 Orthida - Wangyuiidae
Wangyuia thorsteinssoni
 Orthida - Dalmanellidae
Isorthis jini, Isorthis walmsleyi, Isorthis sulcata, Visbyella visbyensis
Visbyella visbyensis Lindstrom 1861
 Orthida - Rhipidomellidae
Dalejina parahanusi, Pseudomendacella boucoti
 Orthida - Dicoelosiidae
Epitomyonia clausula, Epitomyonia amplissima, Dicoelosia bailliehamiltonensis
Epitomyonia clausula Johnson et al. 1976
 Orthida - Draboviidae
Hirnantia sp., Salopina carinata
Hirnantia sp. Lamont 1935
 Spiriferida - Cyrtiidae
Hedeina sp., Janius occidentalis, Cyrtia alatiformis, Plicocyrtia jonesi
Hedeina sp. Boucot 1957
Janius occidentalis Boucot et al. 1988
Cyrtia alatiformis Zhang 1989
 Spiriferida - Adolfiidae
Spurispirifer hughesi
 Spiriferida - Ambocoeliidae
Plicoplasia cf. acutiplicata, Dicoelospirifer dicoelospirifer
 Spiriferida - Reticulariidae
Spirinella struszi
Spirinella struszi Zhang 1989
 Spiriferida - Delthyrididae
Howellella sp.
Howellella sp. Kozlowski 1946
 Athyridida - Meristidae
Merista sp.
Merista sp. Suess 1851
 Athyridida - Nucleospiridae
Nucleospira cf. raritas
 Athyridida - Athyrididae
? Pseudoprotathyris modzalevskayae
 Atrypida - Atrypidae
"? Eospinatrypa savagei" = Plectatrypa savagei, Plectatrypa unicosta, Eospinatrypa bassetti, Eospinatrypa sagana
"? Eospinatrypa savagei" = Plectatrypa savagei Zhang 1989
Eospinatrypa sagana Boucot et al. 1988
 Atrypida - Lissatrypidae
Lissatrypa cf. atheroidea
 Atrypida - Atrypinidae
Gracianella dimorpha, Spirigerina copperi
Gracianella dimorpha
Forms 1 and 2
Spirigerina copperi Zhang 1989
 Atrypida - Punctatrypidae
Reticulatrypa blodgetti, Reticulatrypa variabilis
 Atrypida - Glassiidae
? Glassia "sp. 1"
? Glassia "sp. 1" Davidson 1881
 Atrypida - Anazygidae
Zygatrypa stenoparva
Zygatrypa stenoparva Boucot et al. 1988
 Protorthida - Skenidiidae
Skenidioides operosa
Skenidioides operosa Johnson et al. 1976
 Rhynchonellida - Rhynchotrematidae
Stegerhynchus estonicus
 Rhynchonellida - Trigonirhynchiidae
Thebesia cf. thebesensis, Rhynchotreta americaniformis, "Ancillotoechia" sheehani
Ostracoda
 Palaeocopida -
Severella arctosulcata
Severella arctosulcata Zhang 1989 ostracod