GSC C12272, Baillie-Hamilton Island: Sheinwoodian, Canada

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Fascizentina rohri
Zhang 1989 17 specimens
Gastropoda - Euomphalina - Platyceratidae
Platyceras (Platyostoma) boggsi Rohr et al. 1981
27 specimens
recombined as Platyostoma boggsi
BH-1-348 (8); BH-1-358 (22); BH-1-362 (20); BH-1-368 (6); BH-1-540 (2);
Gastropoda - Euomphalina - Euomphalidae
2 specimens
Gastropoda - Euomphalina - Anomphalidae
Pycnomphalus cf. obesus Lindström 1884
2 specimens
Gastropoda - Euomphalina - Oriostomatidae
? Oriostoma clarki Rohr et al. 1981
3 specimens
recombined as Hecetastoma clarki
2 specimens
BH-1-540 (5);
    = ? Oriostoma sp. Munier-Chalmas 1876
Wagner 2023
Gastropoda - Cyrtoneritida - Orthonychiidae
Platyceras (Orthonychia) baldwini Rohr et al. 1981
5 specimens
recombined as Orthonychia baldwini
Gastropoda - Murchisoniina - Trochonematidae
Trochonema (Eunema) kaysi Rohr et al. 1981
3 specimens
recombined as Globonema kaysi
Gastropoda - Murchisoniina - Murchisoniidae
Loxoplocus (Donaldiella) sp. (Cossmann 1903)
1 specimen
BH-1-358 (22); BH-1-540 (43);
    = Murchisonia aff. obtusangula Lindström 1884
Wagner 2023
Craniata - Trimerellida - Trimerellidae
Trimerella sp. Billings 1862
Zhang 1989 2 specimens
Rhynchonellata - Pentamerida - Parastrophinidae
Grayina cf. magnifica
Zhang 1989 21 specimens
spelled with current rank as Anastrophia (Grayina)
Rhynchonellata - Pentamerida - Subrianidae
Conchidium cf. microlocularis Johnson et al. 1976
Zhang 1989 415 specimens
Spondylopyxis potteri
Zhang 1989 1538 specimens
Cymbidium sp. Kirk 1926
Zhang 1989 55 specimens
Vosmiverstum breiveli Zhang 1989
Zhang 1989 1077 specimens
Rhynchonellata - Pentamerida - Pentameridae
? Rhipidium sp. Schuchert and Cooper 1931
Zhang 1989 14 specimens
? Lissocoelina sp. Schuchert and Cooper 1931
Zhang 1989 34 specimens
Rhynchonellata - Pentamerida - Clorindidae
Clorinda geniculata
Zhang 1989 38 specimens
Clorinda sp. Barrande 1879
Zhang 1989 4 specimens
Rhynchonellata - Pentamerida - Gypidulidae
Amsdenina amsdeni
Zhang 1989 152 specimens
Caryogyps grayi Zhang 1989
Zhang 1989 31 specimens
Caryogyps chattertoni Zhang 1989
Zhang 1989 2 specimens
Rhynchonellata - Rhynchonellida - Trigonirhynchiidae
"Ancillotoechia" sheehani
Zhang 1989 75 specimens
Rhynchotreta americaniformis Zhang 1989
Zhang 1989 133 specimens
Thebesia cf. thebesensis (Foerste 1909)
Zhang 1989 23 specimens
Rhynchonellata - Rhynchonellida - Rhynchotrematidae
Stegerhynchus angaciensis
Zhang 1989 178 specimens
original and current combination Rhynchonella (Stegerhynchus)
Stegerhynchus estonicus Rubel 1977
Zhang 1989 30 specimens
Rhynchonellata - Spiriferida - Delthyrididae
Howellella sp. Kozlowski 1946
Zhang 1989 31 specimens
Rhynchonellata - Spiriferida - Reticulariidae
Spirinella struszi Zhang 1989
Zhang 1989 2535 specimens
Rhynchonellata - Spiriferida - Ambocoeliidae
Plicoplasia cf. acutiplicata
Zhang 1989 31 specimens
Rhynchonellata - Spiriferida - Adolfiidae
Spurispirifer hughesi
Zhang 1989 430 specimens
Rhynchonellata - Spiriferida - Cyrtiidae
Hedeina sp. Boucot 1957
Zhang 1989 16 specimens
Janius occidentalis Boucot et al. 1988
Zhang 1989 96 specimens
Plicocyrtia jonesi
Zhang 1989 397 specimens
Cyrtia alatiformis Zhang 1989
Zhang 1989 35 specimens
Rhynchonellata - Atrypida - Anazygidae
Zygatrypa stenoparva Boucot et al. 1988
Zhang 1989 8 specimens
Rhynchonellata - Atrypida - Punctatrypidae
Reticulatrypa blodgetti
Zhang 1989 221 specimens
Reticulatrypa variabilis
Zhang 1989 394 specimens
Rhynchonellata - Atrypida - Lissatrypidae
Lissatrypa cf. atheroidea Twenhofel 1914
Zhang 1989 671 specimens
Rhynchonellata - Atrypida - Atrypidae
Eospinatrypa bassetti
Zhang 1989 183 specimens
Eospinatrypa sagana Boucot et al. 1988
Zhang 1989 124 specimens
Plectatrypa unicosta Zhang 1989
Zhang 1989 28 specimens
? Eospinatrypa savagei Zhang 1989
Zhang 1989 178 specimens
recombined as Plectatrypa savagei
Rhynchonellata - Atrypida - Atrypinidae
Spirigerina copperi Zhang 1989
Zhang 1989 36 specimens
Gracianella dimorpha
Zhang 1989 2351 specimens
Rhynchonellata - Atrypida - Glassiidae
? Glassia informal sp. 1 Davidson 1881
Zhang 1989 39 specimens
? Glassia informal sp. 2 Davidson 1881
Zhang 1989 2 specimens
Rhynchonellata - Athyridida - Nucleospiridae
Nucleospira cf. raritas
Zhang 1989 113 specimens
Rhynchonellata - Athyridida - Athyrididae
Athyrididae indet. McCoy 1841
Zhang 1989 2 specimens
? Pseudoprotathyris modzalevskayae
Zhang 1989 928 specimens
Rhynchonellata - Athyridida - Meristidae
Merista sp. Suess 1851
Zhang 1989 19 specimens
Rhynchonellata - Orthida - Hesperorthidae
Ptychopleurella lenzi Zhang 1989
Zhang 1989 26 specimens
Flabellitesia kessei (Boucot et al. 1988)
Zhang 1989 18 specimens
Rhynchonellata - Orthida - Wangyuiidae
Wangyuia thorsteinssoni Zhang 1989
Zhang 1989 32 specimens
Rhynchonellata - Orthida - Dicoelosiidae
Dicoelosia bailliehamiltonensis
Zhang 1989 1970 specimens
Epitomyonia clausula Johnson et al. 1976
Zhang 1989 93 specimens
Epitomyonia amplissima Zhang 1989
Zhang 1989 1037 specimens
Rhynchonellata - Orthida - Rhipidomellidae
Pseudomendacella boucoti
Zhang 1989 20 specimens
Dalejina parahanusi
Zhang 1989 47 specimens
Rhynchonellata - Orthida - Dalmanellidae
Isorthis jini
Zhang 1989 490 specimens
Isorthis sulcata
Zhang 1989 130 specimens
Isorthis walmsleyi
Zhang 1989 233 specimens
Resserella canalis (Sowerby 1839)
Zhang 1989 8 specimens
Visbyella visbyensis (Lindstrom 1861)
Zhang 1989 56 specimens
Parmorthina havliceki
Zhang 1989 103 specimens
Rhynchonellata - Orthida - Draboviidae
? Drabovia sp. Havlicek 1950
Zhang 1989 4 specimens
Salopina carinata
Zhang 1989 120 specimens
Hirnantia sagittifera (McCoy 1851)
Zhang 1989 23 specimens
    = Hirnantia sp. Lamont 1935
Rong et al. 2019
Rhynchonellata - Protorthida - Skenidiidae
Skenidioides operosa Johnson et al. 1976
Zhang 1989 1777 specimens
Strophomenata - Strophomenida - Leptaenoideidae
Liljevallia amorpha Zhang 1989
Zhang 1989 111 specimens
Strophomenata - Strophomenida - Rafinesquinidae
Leptaena informal Form 2
Zhang 1989 30 specimens
Strophomenata - Strophomenida - Furcitellidae
Pentlandina harperi Zhang 1989
Zhang 1989 85 specimens
? Laevicyphomena sp.
Zhang 1989 4 specimens
Strophomenata - Strophomenida - Amphistrophiidae
Amphistrophia sp. Hall and Clarke 1892
Zhang 1989 49 specimens
Strophomenata - Strophomenida - Eopholidostrophiidae
Mesopholidostrophia salopiensis (Cocks 1967)
Zhang 1989 22 specimens
Strophomenata - Strophomenida - Aegiromenidae
? Chonetoidea cocksi
Zhang 1989 215 specimens
Aegiria grayi (Davidson 1849)
Zhang 1989 384 specimens
recombined as Jonesea grayi
Strophomenata - Strophomenida - Leptestiidae
Opikella sp.
Zhang 1989 4 specimens
synonym of Leangella
Strophomenata - Strophomenida - Sowerbyellidae
Paranisopleurella cooperi
Zhang 1989 482 specimens
synonym of Eoplectodonta (Ygerodiscus)
Strophomenata - Orthotetida - Chilidiopsidae
Morinorhynchus miniparvicostellus Zhang 1989
Zhang 1989 20 specimens
Morinorhynchus crispus (Lindström 1861)
Zhang 1989 593 specimens
Strophomena crispa
Strophomenata - Orthotetida - Triplesiidae
Streptis glomerata
Zhang 1989 8 specimens
Cliftonia contorta
Zhang 1989 8 specimens
Ostracoda - Palaeocopida
Severella arctosulcata Zhang 1989
Zhang 1989 1825 specimens
see common names

Geography
Country:Canada State/province:Nunavut County:Baillie-Hamilton Island
Coordinates: 75.8° North, 94.5° West (view map)
Paleocoordinates:3.5° North, 32.7° West
Basis of coordinate:estimated from map
Geographic resolution:local area
Time
Period:Silurian Epoch:Wenlock
Stage:Sheinwoodian 10 m.y. bin:Silurian 2
Key time interval:Sheinwoodian Zone: Monograptus riccartonensis
Age range of interval:433.40000 - 430.50000 m.y. ago
Stratigraphy
Formation:Cape Phillips
Stratigraphic resolution:bed
Stratigraphy comments: Rohr et al.: "All of the localities are from the Monograptus riccartonensis Graptolite Zone within the Cape Phillips Formation..."

Zhang: 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.
Lithology and environment
Primary lithology:shelly/skeletal "limestone"
Secondary lithology: calcareous "shale"
Includes fossils?Y
Lithology description: Rohr et al.: "alternating fine-grained argillaceous limestones and lesser amounts of interbedded calcareous shale and biogenic limestone...The shelly fossils from the lower Wenlockian beds...occur in thin shelly limestones interlayered with graptolitic shales and mudstones." Zhang: "..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."
Environment:slope Tectonic setting:passive margin
Geology comments: Rohr et al.: "The nature of the faunas...is consistent with their having been derived by downslope transport and extensive disarticulation from the outer BA 3 region through BA 5."
SEP environmental call based on given info and regional context.

Zhang: "...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
Taphonomy
Modes of preservation:body,replaced with silica
Collection methods and comments
Collection excludes:some macrofossils
Collection methods:bulk,hydrochloric
Reason for describing collection:taxonomic analysis
Museum repositories:GSC
Collection method comments: Combined localities GSC C12272, C22184, C22187, and Perry localities BH-1-348,358,362,368,520, and 540.
Wagner broke this up into individual localities.
Taxonomic list comments: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). Trilobites given in Perry & Chatterton 1977.
Metadata
Database number:26009
Authorizer:M. Foote, P. Wagner Enterer:M. Foote, P. Wagner
Modifier:P. Wagner Research group:marine invertebrate
Collections that are a subset of this one:26012
Created:2002-09-30 15:21:29 Last modified:2006-09-14 20:03:21
Access level:the public Released:2002-09-30 15:21:29
Creative Commons license:CC BY
Reference information

Primary reference:
7204. D. M. Rohr, A.J. Boucot, and D.G. Perry. 1981. Silurian (Wenlockian) gastropods from Baillie-Hamilton Island, Canadian Arctic. Journal of Paleontology 55(2):331-339 [M. Foote/M. Foote/P. Wagner]

Secondary references:

69472 J. -Y. Rong, K. P. Aung, R.-B. Zhan, B. Huang, D. A.T. Harper, D. Chen, H.-H. Zhou and X.-L. Zhang. 2019. The latest Ordovician Hirnantia brachiopod Fauna of Myanmar: Significance of new data from the Mandalay Region. Palaeoworld 28 [P. Wagner/P. Wagner]
9042 P. J. Wagner. 2023. Paleozoic Gastropod, Rostroconch, Helcionelloid and Tergomyan Database (2006 - 2023). [P. Wagner/P. Wagner/P. Wagner]
7205 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]