PBDB Collection

Fauna j, Section AV1, Delorme Fm., Mackenzie Mts. (Silurian of Canada)

Where: Northwest Territories, Canada (62.4° N, 127.0° W: paleocoordinates 4.7° N, 49.3° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Kockelella patula zone, Delorme Formation, Whitwellian (430.5 - 425.4 Ma)

• Zonation based on conodonts present in AV sections 1, 2, and 4. (AV 3 and DR sections correlated with these on basis of trilobite faunal assemblages.)

• group of beds-level stratigraphic resolution

Environment/lithology: slope; argillaceous limestone and shale

• Grand Cycle 3, middle part.

•SEP environmental call: This sample, as listed, is environmentally heterogeneous. It contains both basinal sicliclastic and carbonate slope deposits. I have assigned the environment based on where the majority of individual collections were derived

• "...sequence of buff and light brown weathering, thinly bedded limestones, dolomites and shales that overlie the Whittaker Formation and underlie the Camsell Formation...The beds above and including a distinctive buff-brown shale unit in the sections near Avalanche Lake are included in the Delorme Formation in this work, although the lowest buff-brown shaly beds (below distinctive orange coloured limestones and dolomites) could be regarded as transitional between the Road River and Delorme..."

Preservation: replaced with silica

Primary reference: B. D. E. Chatterton and D. G. Perry. 1983. Silicified Silurian odontopleurid trilobites from the Mackenzie Mountains. Palaeontographica Canadiana 1:1-55 [M. Foote/M. Foote/M. Foote]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 26035: authorized by Michael Foote, entered by Michael Foote on 01.10.2002, edited by Melanie Hopkins

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names

unclassified
-	Cassawarioides stelcki⁷, Cassawarioides perryi⁷ Cassawarioides stelcki⁷ Cassawarioides perryi⁷
Rostroconchia
Conocardiida - Pseudobigaleaidae	Nehedia bainsi⁷, "Bigalea buskasi" = Redstonia buskasi⁷, "Bigalea tercierae" = Redstonia tercierae⁷ Nehedia bainsi⁷ Johnston and Chatterton 1983 "Bigalea buskasi" = Redstonia buskasi⁷ Johnston and Chatterton 1983 "Bigalea tercierae" = Redstonia tercierae⁷ Johnston and Chatterton 1983
Conocardiida - Bransoniidae	Mulceodens wilsoni⁷ Mulceodens wilsoni⁷ Johnston and Chatterton 1983
Rhynchonellata
Spiriferida - Reticulariidae	Spirinella struszi⁶ Spirinella struszi⁶ Zhang 1989
Spiriferida - Cyrtiidae	Cyrtia alatiformis⁶, Hedeina sp.⁶, Janius occidentalis⁶ Cyrtia alatiformis⁶ Zhang 1989 Hedeina sp.⁶ Boucot 1957 Janius occidentalis⁶ Boucot et al. 1988
Orthida - Hesperorthidae	Ptychopleurella lenzi⁶, Ptychopleurella angulaticostata⁶, Flabellitesia kessei⁶ Ptychopleurella lenzi⁶ Zhang 1989 Ptychopleurella angulaticostata⁶ Jin and Chatterton 1997 Flabellitesia kessei⁶ Boucot et al. 1988
Orthida - Dicoelosiidae	Dicoelosia parvifrons⁶ Dicoelosia parvifrons⁶ Johnson et al. 1976
Orthida - Dalmanellidae	Isorthis (Arcualla) boreaina⁶ Isorthis (Arcualla) boreaina⁶ Zhang 1989
Orthida - Draboviidae	Salopina delta⁶ Salopina delta⁶ Johnson et al. 1976
Athyridida - Rhynchospirinidae	Homoeospirella multicostata⁶ Homoeospirella multicostata⁶ Jin and Chatterton 1997
Athyridida - Meristidae	Merista cuneatina⁶ Merista cuneatina⁶ Jin and Chatterton 1997
Athyridida - Meristellidae	Whitfieldella sulcatina⁶ Whitfieldella sulcatina⁶ Jin et al. 1993
Athyridida - Nucleospiridae	Nucleospira lentilca⁶ Nucleospira lentilca⁶ Havlicek 1990
Rhynchonellida - Trigonirhynchiidae	Hercotrema pentaforma⁶, Rhynchotreta americaniformis⁶, Thebesia crassicostata⁶ Hercotrema pentaforma⁶ Lenz 1977 Rhynchotreta americaniformis⁶ Zhang 1989 Thebesia crassicostata⁶ Jin and Chatterton 1997
Atrypida - Septatrypidae	Septatrypa zelia⁶ Septatrypa zelia⁶ Barrande 1879
Atrypida - Atrypidae	Eospinatrypa bullata⁶, Atrypa (Gotatrypa) variabilis⁶, Atrypa (Gotatrypa) blodgetti⁶, Plectatrypa unicosta⁶ Eospinatrypa bullata⁶ Jin and Chatterton 1997 Atrypa (Gotatrypa) variabilis⁶ Johnson et al. 1976 Atrypa (Gotatrypa) blodgetti⁶ Zhang 1989 Plectatrypa unicosta⁶ Zhang 1989
Atrypida - Atrypinidae	Spirigerina copperi⁶ Spirigerina copperi⁶ Zhang 1989
Atrypida -	Atrypoidea latilingulata⁶ Atrypoidea latilingulata⁶ Jin and Chatterton 1997
Protorthida - Skenidiidae	Skenidioides operosa⁶ Skenidioides operosa⁶ Johnson et al. 1976
Pentamerida - Gypidulidae	Gypidula simplex⁶ Gypidula simplex⁶ Foerste 1909
Pentamerida - Subrianidae	Cymbidium kirki⁶, Vosmiverstum breiveli⁶ Cymbidium kirki⁶ Jin and Chatterton 1997 Vosmiverstum breiveli⁶ Zhang 1989
Strophomenata
Orthotetida - Chilidiopsidae	Morinorhynchus crispus⁶ Morinorhynchus crispus⁶ Lindström 1861
Strophomenida - Furcitellidae	Pentlandina lamelliformis⁶, Pentlandina harperi⁶ Pentlandina lamelliformis⁶ Jin and Chatterton 1997 Pentlandina harperi⁶ Zhang 1989
Strophomenida - Rafinesquinidae	"Leptaena depressa" = Leptaena (Leptaena) depressa⁶ "Leptaena depressa" = Leptaena (Leptaena) depressa⁶ Sowerby 1824
Strophomenida - Aegiromenidae	Jonesea grayi⁶, Jonesea cocksi⁶ Jonesea grayi⁶ Davidson 1849 Jonesea cocksi⁶ Zhang 1989
Trilobita
Lichida - Lichidae	Dicranopeltis sp.², Radiolichas guttatus n. sp.², Borealarges renodis³, Borealarges variabilis³, Borealarges fritillus³, Borealarges tuckerae³, Dicranogmus wilsoni², Dicranogmus lepidus² Dicranopeltis sp.² Hawle and Corda 1847 trilobite Radiolichas guttatus n. sp.² Campbell and Chatterton 2006 trilobite Borealarges renodis³ Campbell and Chatterton 2007 trilobite Borealarges variabilis³ Campbell and Chatterton 2007 trilobite Borealarges fritillus³ Campbell and Chatterton 2007 trilobite Borealarges tuckerae³ Adrain 1994 trilobite Dicranogmus wilsoni² Campbell and Chatterton 2006 trilobite Dicranogmus lepidus² Campbell and Chatterton 2006 trilobite
Odontopleurida - Odontopleuridae	Dudleyaspis quinquespinosa, Dudleyaspis rutteri, Ceratocephala plummeri, Ceratocephala crawfordi, "Ceratocephalina sevastopuloi" = Ceratocephala (Ceratocephalina), Acidaspis lesperancei, Diacanthaspis (Diacanthaspis) hollandi, "Xanionurus norfordi" = Radiaspis, Leonaspis longstaffei, Leonaspis lenzi Dudleyaspis quinquespinosa trilobite Dudleyaspis rutteri trilobite Ceratocephala plummeri trilobite Ceratocephala crawfordi trilobite "Ceratocephalina sevastopuloi" = Ceratocephala (Ceratocephalina) trilobite Acidaspis lesperancei trilobite Diacanthaspis (Diacanthaspis) hollandi trilobite "Xanionurus norfordi" = Radiaspis trilobite Leonaspis longstaffei trilobite Leonaspis lenzi trilobite
Proetida - Otarionidae	Otarion huddyi n. sp.¹ Otarion huddyi n. sp.¹ Adrain and Chatterton 1994 trilobite
Phacopida - Calymenidae	Calymene polgari n. sp.⁸, Diacalymene gabrielsi⁸ Calymene polgari n. sp.⁸ Siveter and Chatterton 1996 trilobite C. (s.l.) Diacalymene gabrielsi⁸ Siveter and Chatterton 1996 trilobite
Phacopida - Cheiruridae	Hyrokybe hadnagyi⁴, Hyrokybe julli⁴, Deiphon grovesi⁴, Deiphon braybrooki⁴, Contracheirurus zuvegesi⁴, Sphaerexochus dimorphus⁴, Hadromeros scotti⁴, Parayoungia tuberculata⁴, Parayoungia eleyae⁴ Hyrokybe hadnagyi⁴ Chatterton and Perry 1984 trilobite Hyrokybe julli⁴ Chatterton and Perry 1984 trilobite Deiphon grovesi⁴ trilobite Deiphon braybrooki⁴ trilobite Contracheirurus zuvegesi⁴ trilobite Sphaerexochus dimorphus⁴ Whittington and Evitt 1953 trilobite Hadromeros scotti⁴ trilobite Parayoungia tuberculata⁴ Chatterton and Perry 1984 trilobite Parayoungia eleyae⁴ Chatterton and Perry 1984 trilobite
Phacopida - Encrinuridae	Struszia (Struszia) dimitrovi⁵, Struszia (Avalanchurus) lennoni⁵ Struszia (Struszia) dimitrovi⁵ trilobite Struszia (Avalanchurus) lennoni⁵ trilobite

¹Adrain and Chatterton 1994; ²Campbell and Chatterton 2006; ³Campbell and Chatterton 2007; ⁴Chatterton and Perry 1984; ⁵Edgecombe and Chatterton 1993; ⁶Jin and Chatterton 1997; ⁷Johnston and Chatterton 1983; ⁸Siveter and Chatterton 1996