Fauna j, Section AV1, Delorme Fm., Mackenzie Mts.: Whitwellian, Canada

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Cassawarioides stelcki
Johnston and Chatterton 1983
Cassawarioides perryi
Johnston and Chatterton 1983
Rostroconchia - Conocardiida - Bransoniidae
Mulceodens wilsoni Johnston and Chatterton 1983
Johnston and Chatterton 1983
Rostroconchia - Conocardiida - Pseudobigaleaidae
Johnston and Chatterton 1983
Bigalea tercierae Johnston and Chatterton 1983
Johnston and Chatterton 1983
Johnston and Chatterton 1983
Rhynchonellata - Rhynchonellida - Trigonirhynchiidae
Rhynchotreta americaniformis Zhang 1989
Jin and Chatterton 1997
Thebesia crassicostata Jin and Chatterton 1997
Jin and Chatterton 1997
Hercotrema pentaforma (Lenz 1977)
Jin and Chatterton 1997
Rhynchonellata - Atrypida - Septatrypidae
Septatrypa zelia Barrande 1879
Jin and Chatterton 1997
Rhynchonellata - Atrypida - Atrypinidae
Spirigerina copperi Zhang 1989
Jin and Chatterton 1997
Rhynchonellata - Atrypida - Atrypidae
Plectatrypa unicosta Zhang 1989
Jin and Chatterton 1997
Eospinatrypa bullata Jin and Chatterton 1997
Jin and Chatterton 1997
Atrypa (Gotatrypa) variabilis Johnson et al. 1976
Jin and Chatterton 1997
Atrypa (Gotatrypa) blodgetti Zhang 1989
Jin and Chatterton 1997
Rhynchonellata - Atrypida
Atrypoidea latilingulata Jin and Chatterton 1997
Jin and Chatterton 1997
Rhynchonellata - Orthida - Hesperorthidae
Ptychopleurella angulaticostata Jin and Chatterton 1997
Jin and Chatterton 1997
Ptychopleurella lenzi Zhang 1989
Jin and Chatterton 1997
Flabellitesia kessei (Boucot et al. 1988)
Jin and Chatterton 1997
Rhynchonellata - Orthida - Dicoelosiidae
Dicoelosia parvifrons Johnson et al. 1976
Jin and Chatterton 1997
Rhynchonellata - Orthida - Dalmanellidae
Isorthis (Arcualla) boreaina Zhang 1989
Jin and Chatterton 1997
Rhynchonellata - Orthida - Draboviidae
Salopina delta Johnson et al. 1976
Jin and Chatterton 1997
Rhynchonellata - Spiriferida - Cyrtiidae
Hedeina sp. Boucot 1957
Jin and Chatterton 1997
Janius occidentalis Boucot et al. 1988
Jin and Chatterton 1997
Cyrtia alatiformis Zhang 1989
Jin and Chatterton 1997
Rhynchonellata - Spiriferida - Reticulariidae
Spirinella struszi Zhang 1989
Jin and Chatterton 1997
Rhynchonellata - Protorthida - Skenidiidae
Skenidioides operosa Johnson et al. 1976
Jin and Chatterton 1997
Rhynchonellata - Pentamerida - Gypidulidae
Gypidula simplex Foerste 1909
Jin and Chatterton 1997
Rhynchonellata - Pentamerida - Subrianidae
Vosmiverstum breiveli Zhang 1989
Jin and Chatterton 1997
Cymbidium kirki Jin and Chatterton 1997
Jin and Chatterton 1997
Rhynchonellata - Athyridida - Nucleospiridae
Nucleospira lentilca Havlicek 1990
Jin and Chatterton 1997
Rhynchonellata - Athyridida - Meristellidae
Whitfieldella sulcatina Jin et al. 1993
Jin and Chatterton 1997
Rhynchonellata - Athyridida - Meristidae
Merista cuneatina Jin and Chatterton 1997
Jin and Chatterton 1997
Rhynchonellata - Athyridida - Rhynchospirinidae
Homoeospirella multicostata Jin and Chatterton 1997
Jin and Chatterton 1997
Strophomenata - Orthotetida - Chilidiopsidae
Morinorhynchus crispus (Lindström 1861)
Jin and Chatterton 1997
Strophomenata - Strophomenida - Rafinesquinidae
Leptaena depressa (Sowerby 1824)
Jin and Chatterton 1997
Strophomenata - Strophomenida - Furcitellidae
Pentlandina harperi Zhang 1989
Jin and Chatterton 1997
Pentlandina lamelliformis Jin and Chatterton 1997
Jin and Chatterton 1997
Strophomenata - Strophomenida - Aegiromenidae
Jonesea grayi (Davidson 1849)
Jin and Chatterton 1997
Jonesea cocksi Zhang 1989
Jin and Chatterton 1997
Trilobita - Proetida - Otarionidae
Otarion huddyi n. sp. Adrain and Chatterton 1994
Adrain and Chatterton 1994
Trilobita - Phacopida - Encrinuridae
Struszia (Struszia) dimitrovi
Edgecombe and Chatterton 1993
Struszia (Avalanchurus) lennoni
Edgecombe and Chatterton 1993
Trilobita - Phacopida - Cheiruridae
Parayoungia eleyae Chatterton and Perry 1984
Chatterton and Perry 1984
Parayoungia tuberculata Chatterton and Perry 1984
Chatterton and Perry 1984
Deiphon grovesi
Chatterton and Perry 1984
Deiphon braybrooki
Chatterton and Perry 1984
Sphaerexochus dimorphus Whittington and Evitt 1953
Chatterton and Perry 1984
Contracheirurus zuvegesi
Chatterton and Perry 1984
Hyrokybe julli Chatterton and Perry 1984
Chatterton and Perry 1984
Hyrokybe hadnagyi Chatterton and Perry 1984
Chatterton and Perry 1984
Hadromeros scotti
Chatterton and Perry 1984
Trilobita - Phacopida - Calymenidae
Calymene polgari n. sp. Siveter and Chatterton 1996
Siveter and Chatterton 1996
C. (s.l.)
Diacalymene gabrielsi Siveter and Chatterton 1996
Siveter and Chatterton 1996
Trilobita - Odontopleurida - Odontopleuridae
Ceratocephala plummeri
Ceratocephala crawfordi
Ceratocephalina sevastopuloi
Dudleyaspis quinquespinosa
Dudleyaspis rutteri
Diacanthaspis (Diacanthaspis) hollandi
Leonaspis longstaffei
Leonaspis lenzi
Xanionurus norfordi
Acidaspis lesperancei
Trilobita - Lichida - Lichidae
Dicranopeltis sp. Hawle and Corda 1847
Campbell and Chatterton 2006
Radiolichas guttatus n. sp. Campbell and Chatterton 2006
Campbell and Chatterton 2006
Dicranogmus wilsoni Campbell and Chatterton 2006
Campbell and Chatterton 2006
Dicranogmus lepidus Campbell and Chatterton 2006
Campbell and Chatterton 2006
Borealarges variabilis Campbell and Chatterton 2007
Campbell and Chatterton 2007
Borealarges renodis Campbell and Chatterton 2007
Campbell and Chatterton 2007
Borealarges tuckerae Adrain 1994
Campbell and Chatterton 2007
Borealarges fritillus Campbell and Chatterton 2007
Campbell and Chatterton 2007
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: 430.5 - 429.7 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: 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
Taphonomy
Modes of preservation:replaced with silica
Collection methods and comments
Collection excludes:some macrofossils
Reason for describing collection:taxonomic analysis
Metadata
Database number:26035
Authorizer:M. Foote, M. Hopkins Enterer:M. Foote, M. Hopkins
Modifier:P. Wagner Research group:marine invertebrate
Created:2002-10-01 09:54:12 Last modified:2007-04-10 16:36:39
Access level:the public Released:2002-10-01 09:54:12
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]
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]