Fauna j, Section AV4, Delorme Fm., Mackenzie Mts.: Whitwellian, Canada
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Ostracoda
- Palaeocopida
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Severella arctosulcata
Zhang 1989
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Jin and Chatterton 1997 | |||||||||
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Trilobita
- Lichida
- Lichidae
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Radiolichas guttatus
Campbell and Chatterton 2006
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Campbell and Chatterton 2006 | |||||||||
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Borealarges variabilis n. sp.
Campbell and Chatterton 2007
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Campbell and Chatterton 2007 | |||||||||
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Borealarges renodis n. sp.
Campbell and Chatterton 2007
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Campbell and Chatterton 2007 | |||||||||
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Dicranogmus wilsoni n. sp.
Campbell and Chatterton 2006
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Campbell and Chatterton 2006 | |||||||||
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Dicranogmus lepidus n. sp.
Campbell and Chatterton 2006
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Campbell and Chatterton 2006 | |||||||||
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Dicranopeltis sp.
Hawle and Corda 1847
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Campbell and Chatterton 2006 | |||||||||
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Trilobita
- Proetida
- Aulacopleuridae
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Harpidella greggi n. sp.
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Adrain and Chatterton 1995 | |||||||||
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Trilobita
- Proetida
- Otarionidae
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Otarion huddyi n. sp.
Adrain and Chatterton 1994
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Adrain and Chatterton 1994 | |||||||||
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Cyphaspis munii n. sp.
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Adrain and Chatterton 1996 | |||||||||
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Trilobita
- Odontopleurida
- Odontopleuridae
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Diacanthaspis (Diacanthaspis) hollandi
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Odontopleura brevigena
Chatterton and Perry 1983
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| recombined as Odontopleura (Odontopleura) brevigena | ||||||||||
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Acidaspis lesperancei
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Leonaspis longstaffei
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Leonaspis lenzi
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Xanionurus norfordi
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| synonym of Radiaspis | ||||||||||
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Ceratocephala plummeri
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Ceratocephala crawfordi
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Ceratocephalina charlesworthi
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| original and current combination Ceratocephala (Ceratocephalina) | ||||||||||
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Ceratocephalina sevastopuloi
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| original and current combination Ceratocephala (Ceratocephalina) | ||||||||||
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Dudleyaspis quinquespinosa
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Dudleyaspis rutteri
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Trilobita
- Phacopida
- Cheiruridae
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Parayoungia tuberculata
Chatterton and Perry 1984
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Chatterton and Perry 1984 | |||||||||
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Parayoungia eleyae
Chatterton and Perry 1984
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Chatterton and Perry 1984 | |||||||||
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Hadromeros scotti
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Chatterton and Perry 1984 | |||||||||
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Sphaerexochus johnstoni
Chatterton and Perry 1984
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Chatterton and Perry 1984 | |||||||||
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Sphaerexochus dimorphus
Whittington and Evitt 1953
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Chatterton and Perry 1984 | |||||||||
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Deiphon grovesi
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Chatterton and Perry 1984 | |||||||||
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Hyrokybe sp. n. sp.
Lane 1972
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Chatterton and Perry 1984 | |||||||||
| n. sp. A | ||||||||||
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Hyrokybe julli
Chatterton and Perry 1984
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Chatterton and Perry 1984 | |||||||||
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Hyrokybe hadnagyi
Chatterton and Perry 1984
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Chatterton and Perry 1984 | |||||||||
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Trilobita
- Phacopida
- Encrinuridae
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Struszia (Struszia) dimitrovi
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Edgecombe and Chatterton 1993 | |||||||||
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Struszia (Avalanchurus) lennoni
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Edgecombe and Chatterton 1993 | |||||||||
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Trilobita
- Phacopida
- Calymenidae
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Diacalymene gabrielsi
Siveter and Chatterton 1996
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Siveter and Chatterton 1996 | |||||||||
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Calymene polgari
Siveter and Chatterton 1996
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Siveter and Chatterton 1996 | |||||||||
| C. (s.l.) | ||||||||||
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Strophomenata
- Strophomenida
- Furcitellidae
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Pentlandina harperi
Zhang 1989
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Jin and Chatterton 1997 | |||||||||
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Pentlandina lamelliformis
Jin and Chatterton 1997
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Jin and Chatterton 1997 | |||||||||
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Strophomenata
- Strophomenida
- Rafinesquinidae
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Lepidoleptaena poulseni
Kelly 1967
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Jin and Chatterton 1997 | |||||||||
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Leptaena depressa
(Sowerby 1824)
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Jin and Chatterton 1997 | |||||||||
| recombined as Leptaena (Leptaena) depressa | ||||||||||
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Strophomenata
- Strophomenida
- Sowerbyellidae
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Eoplectodonta (Eoplectodonta) paucicostellata
Jin and Chatterton 1997
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Jin and Chatterton 1997 | |||||||||
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Strophomenata
- Strophomenida
- Aegiromenidae
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Jonesea cocksi
Zhang 1989
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Jin and Chatterton 1997 | |||||||||
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Jonesea grayi
(Davidson 1849)
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Jin and Chatterton 1997 | |||||||||
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Strophomenata
- Strophomenida
- Strophodontidae
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Pholidostrophia (Mesopholidostrophia) lamellosa
Zhang 1989
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Jin and Chatterton 1997 | |||||||||
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Strophomenata
- Orthotetida
- Chilidiopsidae
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Morinorhynchus miniparvicostellus
Zhang 1989
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Jin and Chatterton 1997 | |||||||||
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Rhynchonellata
- Rhynchonellida
- Trigonirhynchiidae
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Rhynchotreta americaniformis
Zhang 1989
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Jin and Chatterton 1997 | |||||||||
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Thebesia crassicostata
Jin and Chatterton 1997
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Jin and Chatterton 1997 | |||||||||
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Hercotrema pentaforma
(Lenz 1977)
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Jin and Chatterton 1997 | |||||||||
| Ancillotoechia pentaforma | ||||||||||
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Rhynchonellata
- Rhynchonellida
- Rhynchotrematidae
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Stegerhynchus borealis
(Buch 1834)
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Jin and Chatterton 1997 | |||||||||
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Rhynchonellata
- Orthida
- Hesperorthidae
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Ptychopleurella lenzi
Zhang 1989
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Jin and Chatterton 1997 | |||||||||
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Ptychopleurella angulaticostata
Jin and Chatterton 1997
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Jin and Chatterton 1997 | |||||||||
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Rhynchonellata
- Orthida
- Dicoelosiidae
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Dicoelosia parvifrons
Johnson et al. 1976
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Jin and Chatterton 1997 | |||||||||
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Epitomyonia clausula
Johnson et al. 1976
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Jin and Chatterton 1997 | |||||||||
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Rhynchonellata
- Orthida
- Draboviidae
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Salopina delta
Johnson et al. 1976
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Jin and Chatterton 1997 | |||||||||
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Rhynchonellata
- Protorthida
- Skenidiidae
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Skenidioides operosa
Johnson et al. 1976
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Jin and Chatterton 1997 | |||||||||
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Rhynchonellata
- Pentamerida
- Subrianidae
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Cymbidium kirki
Jin and Chatterton 1997
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Jin and Chatterton 1997 | |||||||||
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Vosmiverstum breiveli
Zhang 1989
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Jin and Chatterton 1997 | |||||||||
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Rhynchonellata
- Pentamerida
- Clorindidae
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Clorinda parvolinguifera
Sapelnikov 1972
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Jin and Chatterton 1997 | |||||||||
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Rhynchonellata
- Pentamerida
- Gypidulidae
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Caryogyps grayi
Zhang 1989
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Jin and Chatterton 1997 | |||||||||
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Caryogyps chattertoni
Zhang 1989
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Jin and Chatterton 1997 | |||||||||
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Gypidula simplex
Foerste 1909
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Jin and Chatterton 1997 | |||||||||
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Rhynchonellata
- Spiriferida
- Reticulariidae
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Spirinella struszi
Zhang 1989
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Jin and Chatterton 1997 | |||||||||
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Rhynchonellata
- Spiriferida
- Cyrtiidae
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Cyrtia alatiformis
Zhang 1989
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Jin and Chatterton 1997 | |||||||||
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Hedeina sp.
Boucot 1957
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Jin and Chatterton 1997 | |||||||||
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Janius exsul
Barrande 1848
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Jin and Chatterton 1997 | |||||||||
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Rhynchonellata
- Atrypida
- Septatrypidae
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Septatrypa zelia
Barrande 1879
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Jin and Chatterton 1997 | |||||||||
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Rhynchonellata
- Atrypida
- Atrypidae
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Eospinatrypa bullata
Jin and Chatterton 1997
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Jin and Chatterton 1997 | |||||||||
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Plectatrypa unicosta
Zhang 1989
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Jin and Chatterton 1997 | |||||||||
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Atrypa (Gotatrypa) variabilis
Johnson et al. 1976
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Jin and Chatterton 1997 | |||||||||
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Atrypa (Gotatrypa) blodgetti
Zhang 1989
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Jin and Chatterton 1997 | |||||||||
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Rhynchonellata
- Atrypida
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Atrypoidea latilingulata
Jin and Chatterton 1997
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Jin and Chatterton 1997 | |||||||||
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Rhynchonellata
- Atrypida
- Atrypinidae
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Spirigerina copperi
Zhang 1989
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Jin and Chatterton 1997 | |||||||||
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Gracianella rudicristata
Jin and Chatterton 1997
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Jin and Chatterton 1997 | |||||||||
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Rhynchonellata
- Athyridida
- Nucleospiridae
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Nucleospira lentilca
Havlicek 1990
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Jin and Chatterton 1997 | |||||||||
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Rhynchonellata
- Athyridida
- Meristidae
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Merista cuneatina
Jin and Chatterton 1997
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Jin and Chatterton 1997 | |||||||||
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Rhynchonellata
- Athyridida
- Meristellidae
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Whitfieldella sulcatina
Jin et al. 1993
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Jin and Chatterton 1997 | |||||||||
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Rhynchonellata
- Athyridida
- Rhynchospirinidae
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Homoeospirella multicostata
Jin and Chatterton 1997
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Jin and Chatterton 1997 | |||||||||
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Rostroconchia
- Conocardiida
- Pseudobigaleaidae
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Bigalea buskasi
Johnston and Chatterton 1983
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Johnston and Chatterton 1983 | |||||||||
| recombined as Redstonia buskasi | ||||||||||
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Bigalea tercierae
Johnston and Chatterton 1983
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Johnston and Chatterton 1983 | |||||||||
| recombined as Redstonia tercierae | ||||||||||
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Avalanchia pterocarina n. gen., n. sp.
Caldwell and Chatterton 1995
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Caldwell and Chatterton 1995 | |||||||||
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Cassowarioides n. gen. perryi
Johnston and Chatterton 1983
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Johnston and Chatterton 1983 | |||||||||
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Cassowarioides stelcki
Johnston and Chatterton 1983
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Johnston and Chatterton 1983 | |||||||||
| synonym of Cassowarioides perryi | ||||||||||
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Rostroconchia
- Conocardiida
- Bransoniidae
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Mulceodens schneideri
Johnston and Chatterton 1983
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Johnston and Chatterton 1983 | |||||||||
| see common names | ||||||||||
Geography
| Country: | Canada | State/province: | Northwest Territories |
| Coordinates: | 62.4° North, 127.0° West (view map) | ||
| Paleocoordinates: | 4.7° North, 49.3° West | ||
| Basis of coordinate: | estimated from map | ||
| Geographic resolution: | outcrop |
Time
| Period: | Silurian | ||
| 10 m.y. bin: | Silurian 2 | *Epoch: | Early/Lower Wenlock |
| Key time interval: | Whitwellian | Zone: | Kockelella patula |
| Age range of interval: | 430.50000 - 429.70000 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Delorme | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: 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.) | |||||
Lithology and environment
| Primary lithology: | argillaceous "limestone" | ||
| Secondary lithology: | "shale" | ||
| Lithology description: "...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..." | |||
| Environment: | slope | Tectonic setting: | passive margin |
| Glacial or sequence phase: | highstand systems tract | ||
| Geology comments: Grand Cycle 3, middle part.
SEP environmental call based on given information | |||
Taphonomy
| Modes of preservation: | replaced with silica |
Collection methods and comments
| Collection excludes: | some macrofossils |
| Reason for describing collection: | taxonomic analysis |
Metadata
| Database number: | 26048 | ||
| Authorizer: | M. Foote, M. Hopkins | Enterer: | M. Foote, M. Hopkins |
| Modifier: | P. Wagner | Research group: | marine invertebrate |
| Created: | 2002-10-01 10:31:02 | Last modified: | 2007-04-10 16:38:22 |
| Access level: | the public | Released: | 2002-10-01 10:31:02 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 7215. | 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] |
Secondary references:
| 7226 | J. M. Adrain and B. D. E. Chatterton. 1994. The aulacopleurid trilobite Otarion, with new species from the Silurian of northwestern Canada. Journal of Paleontology 68(2):305-323 [M. Foote/M. Foote/M. Foote] | |
| 7233 | J. M. Adrain and B. D. E. Chatterton. 1995. The otarionine trilobites Harpidella and Maurotarion, with species from northwestern Canada, the United States, and Australia. Journal of Paleontology 69(2):307-326 [M. Foote/M. Foote/M. Foote] | |
| 7231 | J. M. Adrain and B. D. E. Chatterton. 1996. The otarionine trilobite Cyphaspis, with new species from the Silurian of northwestern Canada. Journal of Paleontology 70(1):100-110 [M. Foote/M. Foote/M. Foote] | |
| 7222 | M. W. Caldwell and B. D. E. Chatterton. 1995. Phylogenetic analysis of some Silurian rostroconchs (Mollusca) from northwestern Canada. Canadian Journal of Earth Sciences 32:806-827 [M. Foote/M. Foote/M. Foote] | |
| 63116 | M. J. Campbell and B. D. E. Chatterton. 2006. Late Ordovician and Silurian lichid trilobites from northwestern Canada: eight new species from subfamilies Lichinae, Platylichinae, and Trochurinae. Journal of Paleontology 80(3):514-528 [M. Hopkins/M. Hopkins] | |
| 25908 | M. J. Campbell and B. D. E. Chatterton. 2007. Late Ordovician and Silurian lichid trilobites from Northwestern Canada: Hemiarges, Borealarges, and Richterarges. Journal of Paleontology 81(6):1348-1364 [P. Wagner/P. Wagner/P. Wagner] | |
| 7216 | B. D. E. Chatterton and D. G. Perry. 1984. Silurian cheirurid trilobites from the Mackenzie Mountains, northwestern Canada. Palaeontographica Abteilung A 184(1-4):1-78 [M. Foote/M. Foote/M. Foote] | |
| 7220 | G. D. Edgecombe and B. D. E. Chatterton. 1993. Silurian (Wenlock-Ludlow) encrinurine trilobites from the Mackenzie Mountains, Canada, and related species. Palaeontographica Abteilung A 229(4-6):75-112 [M. Foote/M. Foote/M. Foote] | |
| 7218 | J. Jin and B. D. E. Chatterton. 1997. Latest Ordovician-Silurian articulate brachiopods and biostratigraphy of the Avalanche Lake area, southwestern District of Mackenzie, Canada. Palaeontographica Canadiana 13:1-62 [M. Foote/M. Foote/M. Foote] | |
| 7221 | D. I. Johnston and B. D. E. Chatterton. 1983. Some silicified Middle Silurian rostroconchs (Mollusca) from the Mackenzie Mountains, N.W.T., Canada. Canadian Journal of Earth Sciences 20:844-858 [M. Foote/M. Foote/M. Foote] | |
| 7217 | D. J. Siveter and B. D. E. Chatterton. 1996. Silicified calymenid trilobites from the Mackenzie Mountains, northwest Canada. Palaeontographica Abteilung A 239(1-3):43-60 [M. Foote/M. Foote/M. Foote] |