PBDB Collection

Fauna j, Section AV4, 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 based on given information

• "...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 26048: 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

Trilobita
Odontopleurida - Odontopleuridae	Ceratocephala plummeri, Ceratocephala crawfordi, "Ceratocephalina charlesworthi" = Ceratocephala (Ceratocephalina), "Ceratocephalina sevastopuloi" = Ceratocephala (Ceratocephalina), Dudleyaspis quinquespinosa, Dudleyaspis rutteri, "Xanionurus norfordi" = Radiaspis, Diacanthaspis (Diacanthaspis) hollandi, "Odontopleura brevigena" = Odontopleura (Odontopleura) brevigena, Leonaspis longstaffei, Leonaspis lenzi, Acidaspis lesperancei Ceratocephala plummeri trilobite Ceratocephala crawfordi trilobite "Ceratocephalina charlesworthi" = Ceratocephala (Ceratocephalina) trilobite "Ceratocephalina sevastopuloi" = Ceratocephala (Ceratocephalina) trilobite Dudleyaspis quinquespinosa trilobite Dudleyaspis rutteri trilobite "Xanionurus norfordi" = Radiaspis trilobite Diacanthaspis (Diacanthaspis) hollandi trilobite "Odontopleura brevigena" = Odontopleura (Odontopleura) brevigena Chatterton and Perry 1983 trilobite Leonaspis longstaffei trilobite Leonaspis lenzi trilobite Acidaspis lesperancei trilobite
Lichida - Lichidae	Dicranopeltis sp.⁵, Dicranogmus wilsoni n. sp.⁵, Dicranogmus lepidus n. sp.⁵, Borealarges variabilis n. sp.⁶, Borealarges renodis n. sp.⁶, Radiolichas guttatus⁵ Dicranopeltis sp.⁵ Hawle and Corda 1847 trilobite Dicranogmus wilsoni n. sp.⁵ Campbell and Chatterton 2006 trilobite Dicranogmus lepidus n. sp.⁵ Campbell and Chatterton 2006 trilobite Borealarges variabilis n. sp.⁶ Campbell and Chatterton 2007 trilobite Borealarges renodis n. sp.⁶ Campbell and Chatterton 2007 trilobite Radiolichas guttatus⁵ Campbell and Chatterton 2006 trilobite
Proetida - Otarionidae	Cyphaspis munii n. sp.³, Otarion huddyi n. sp.¹ Cyphaspis munii n. sp.³ trilobite Otarion huddyi n. sp.¹ Adrain and Chatterton 1994 trilobite
Proetida - Aulacopleuridae	Harpidella greggi n. sp.² Harpidella greggi n. sp.² trilobite
Phacopida - Calymenidae	Calymene polgari¹¹, Diacalymene gabrielsi¹¹ Calymene polgari¹¹ Siveter and Chatterton 1996 trilobite C. (s.l.) Diacalymene gabrielsi¹¹ Siveter and Chatterton 1996 trilobite
Phacopida - Cheiruridae	Hadromeros scotti⁷, Parayoungia eleyae⁷, Parayoungia tuberculata⁷, Hyrokybe sp. n. sp.⁷, Hyrokybe hadnagyi⁷, Hyrokybe julli⁷, Sphaerexochus johnstoni⁷, Sphaerexochus dimorphus⁷, Deiphon grovesi⁷ Hadromeros scotti⁷ trilobite Parayoungia eleyae⁷ Chatterton and Perry 1984 trilobite Parayoungia tuberculata⁷ Chatterton and Perry 1984 trilobite Hyrokybe sp. n. sp.⁷ Lane 1972 trilobite n. sp. A Hyrokybe hadnagyi⁷ Chatterton and Perry 1984 trilobite Hyrokybe julli⁷ Chatterton and Perry 1984 trilobite Sphaerexochus johnstoni⁷ Chatterton and Perry 1984 trilobite Sphaerexochus dimorphus⁷ Whittington and Evitt 1953 trilobite Deiphon grovesi⁷ trilobite
Phacopida - Encrinuridae	Struszia (Struszia) dimitrovi⁸, Struszia (Avalanchurus) lennoni⁸ Struszia (Struszia) dimitrovi⁸ trilobite Struszia (Avalanchurus) lennoni⁸ trilobite
Ostracoda
Palaeocopida -	Severella arctosulcata⁹ Severella arctosulcata⁹ Zhang 1989 ostracod
Rostroconchia
Conocardiida - Bransoniidae	Mulceodens schneideri¹⁰ Mulceodens schneideri¹⁰ Johnston and Chatterton 1983
Conocardiida - Pseudobigaleaidae	"Bigalea tercierae" = Redstonia tercierae¹⁰, "Bigalea buskasi" = Redstonia buskasi¹⁰, Avalanchia pterocarina n. gen. n. sp.⁴, "Cassowarioides perryi n. gen." = Cassowarioides perryi¹⁰, "Cassowarioides stelcki" = Cassowarioides perryi¹⁰ "Bigalea tercierae" = Redstonia tercierae¹⁰ Johnston and Chatterton 1983 "Bigalea buskasi" = Redstonia buskasi¹⁰ Johnston and Chatterton 1983 Avalanchia pterocarina n. gen. n. sp.⁴ Caldwell and Chatterton 1995 "Cassowarioides perryi n. gen." = Cassowarioides perryi¹⁰ Johnston and Chatterton 1983 "Cassowarioides stelcki" = Cassowarioides perryi¹⁰ Johnston and Chatterton 1983
Strophomenata
Orthotetida - Chilidiopsidae	Morinorhynchus miniparvicostellus⁹ Morinorhynchus miniparvicostellus⁹ Zhang 1989
Strophomenida - Rafinesquinidae	"Leptaena depressa" = Leptaena (Leptaena) depressa⁹, Lepidoleptaena poulseni⁹ "Leptaena depressa" = Leptaena (Leptaena) depressa⁹ Sowerby 1824 Lepidoleptaena poulseni⁹ Kelly 1967
Strophomenida - Furcitellidae	Pentlandina harperi⁹, Pentlandina lamelliformis⁹ Pentlandina harperi⁹ Zhang 1989 Pentlandina lamelliformis⁹ Jin and Chatterton 1997
Strophomenida - Sowerbyellidae	Eoplectodonta (Eoplectodonta) paucicostellata⁹ Eoplectodonta (Eoplectodonta) paucicostellata⁹ Jin and Chatterton 1997
Strophomenida - Strophodontidae	Pholidostrophia (Mesopholidostrophia) lamellosa⁹ Pholidostrophia (Mesopholidostrophia) lamellosa⁹ Zhang 1989
Strophomenida - Aegiromenidae	Jonesea grayi⁹, Jonesea cocksi⁹ Jonesea grayi⁹ Davidson 1849 Jonesea cocksi⁹ Zhang 1989
Rhynchonellata
Atrypida - Atrypinidae	Gracianella rudicristata⁹, Spirigerina copperi⁹ Gracianella rudicristata⁹ Jin and Chatterton 1997 Spirigerina copperi⁹ Zhang 1989
Atrypida -	Atrypoidea latilingulata⁹ Atrypoidea latilingulata⁹ Jin and Chatterton 1997
Atrypida - Atrypidae	Plectatrypa unicosta⁹, Eospinatrypa bullata⁹, Atrypa (Gotatrypa) blodgetti⁹, Atrypa (Gotatrypa) variabilis⁹ Plectatrypa unicosta⁹ Zhang 1989 Eospinatrypa bullata⁹ Jin and Chatterton 1997 Atrypa (Gotatrypa) blodgetti⁹ Zhang 1989 Atrypa (Gotatrypa) variabilis⁹ Johnson et al. 1976
Atrypida - Septatrypidae	Septatrypa zelia⁹ Septatrypa zelia⁹ Barrande 1879
Athyridida - Rhynchospirinidae	Homoeospirella multicostata⁹ Homoeospirella multicostata⁹ Jin and Chatterton 1997
Athyridida - Meristellidae	Whitfieldella sulcatina⁹ Whitfieldella sulcatina⁹ Jin et al. 1993
Athyridida - Meristidae	Merista cuneatina⁹ Merista cuneatina⁹ Jin and Chatterton 1997
Athyridida - Nucleospiridae	Nucleospira lentilca⁹ Nucleospira lentilca⁹ Havlicek 1990
Pentamerida - Gypidulidae	Gypidula simplex⁹, Caryogyps grayi⁹, Caryogyps chattertoni⁹ Gypidula simplex⁹ Foerste 1909 Caryogyps grayi⁹ Zhang 1989 Caryogyps chattertoni⁹ Zhang 1989
Pentamerida - Clorindidae	Clorinda parvolinguifera⁹ Clorinda parvolinguifera⁹ Sapelnikov 1972
Pentamerida - Subrianidae	Cymbidium kirki⁹, Vosmiverstum breiveli⁹ Cymbidium kirki⁹ Jin and Chatterton 1997 Vosmiverstum breiveli⁹ Zhang 1989
Orthida - Hesperorthidae	Ptychopleurella angulaticostata⁹, Ptychopleurella lenzi⁹ Ptychopleurella angulaticostata⁹ Jin and Chatterton 1997 Ptychopleurella lenzi⁹ Zhang 1989
Orthida - Dicoelosiidae	Dicoelosia parvifrons⁹, Epitomyonia clausula⁹ Dicoelosia parvifrons⁹ Johnson et al. 1976 Epitomyonia clausula⁹ Johnson et al. 1976
Orthida - Draboviidae	Salopina delta⁹ Salopina delta⁹ Johnson et al. 1976
Protorthida - Skenidiidae	Skenidioides operosa⁹ Skenidioides operosa⁹ Johnson et al. 1976
Spiriferida - Reticulariidae	Spirinella struszi⁹ Spirinella struszi⁹ Zhang 1989
Spiriferida - Cyrtiidae	Cyrtia alatiformis⁹, Hedeina sp.⁹, Janius exsul⁹ Cyrtia alatiformis⁹ Zhang 1989 Hedeina sp.⁹ Boucot 1957 Janius exsul⁹ Barrande 1848
Rhynchonellida - Rhynchotrematidae	Stegerhynchus borealis⁹ Stegerhynchus borealis⁹ Buch 1834
Rhynchonellida - Trigonirhynchiidae	Hercotrema pentaforma⁹, Rhynchotreta americaniformis⁹, Thebesia crassicostata⁹ Hercotrema pentaforma⁹ Lenz 1977 Rhynchotreta americaniformis⁹ Zhang 1989 Thebesia crassicostata⁹ Jin and Chatterton 1997

¹Adrain and Chatterton 1994; ²Adrain and Chatterton 1995; ³Adrain and Chatterton 1996; ⁴Caldwell and Chatterton 1995; ⁵Campbell and Chatterton 2006; ⁶Campbell and Chatterton 2007; ⁷Chatterton and Perry 1984; ⁸Edgecombe and Chatterton 1993; ⁹Jin and Chatterton 1997; ¹⁰Johnston and Chatterton 1983; ¹¹Siveter and Chatterton 1996