PBDB Collection

Esbataottine Mountain Calyptaulax-Ceraurinella Biofacies (P-1497) (Ordovician of Canada)

Also known as P 1497, GSC loc. no. C-26319

Where: Northwest Territories, Canada (61.7° N, 125.9° W: paleocoordinates 5.6° N, 59.9° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Esbataottine Formation, Chazyan (470.0 - 457.3 Ma)

• bed-level stratigraphic resolution

Environment/lithology: deep subtidal; argillaceous, silty limestone

• "[H]omogeneous, probably soft bottom, carbonate and mud substrate, deposited under quiet water conditions on a wide shelf ranging from the littoral to, possibly, deep sub-littoral zones."

• "[H]omogeneous sequence of micrites and microbiosparites, commonly silty and argillaceous. The bedding is regular to nodular and generally thin (3-8 cm) to medium (8-20 cm), rarely thickly bedded. Sand-size components are absent and more common biotic contributors to skeletal sands (pelmatozoans, heavy-shelled brachiopods, algae, corals, or stromatoporioids) are rare or absent."

Size classes: macrofossils, microfossils

Preservation: replaced with silica

Primary reference: B. D. E. Chatterton and R. Ludvigsen. 1976. Silicified Middle Ordovician trilobites from the South Nahanni River Area, District of Mackenzie, Canada. Palaeontographica Abteilung A 154(1-3):1-106 [S. Holland/T. Hanson/T. Hanson]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 25935: authorized by Steven Holland, entered by Tori Hanson on 28.09.2002, edited by Melanie Hopkins and Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names

Trilobita
Proetida - Telephinidae	"Carrickia pinguimitra" = Phorocephala pinguimitra "Carrickia pinguimitra" = Phorocephala pinguimitra Chatterton and Ludvigsen 1976 trilobite
Corynexochida - Illaenidae	"Bumastus (Bumastoides) lenzi" = Bumastoides lenzi, Nanillaenus mackenziensis "Bumastus (Bumastoides) lenzi" = Bumastoides lenzi Chatterton and Ludvigsen 1976 trilobite Nanillaenus mackenziensis Chatterton and Ludvigsen 1976 trilobite
Corynexochida - Styginidae	Failleana calva Failleana calva Chatterton and Ludvigsen 1976 trilobite
Odontopleurida - Odontopleuridae	Apianurus parabarbatus Apianurus parabarbatus Chatterton and Ludvigsen 1976 trilobite
Lichida - Lichidae	Hemiarges turneri, Amphilichas conradi Hemiarges turneri Chatterton and Ludvigsen 1976 trilobite Amphilichas conradi Chatterton and Ludvigsen 1976 trilobite
Harpetida - Harpetidae	Dolichoharpes aff. reticulata Dolichoharpes aff. reticulata Whittington 1949 trilobite
Asaphida - Remopleurididae	Remopleurides pattersoni Remopleurides pattersoni Chatterton and Ludvigsen 1976 trilobite
Asaphida - Asaphidae	Nahannia mediocrisulcata Nahannia mediocrisulcata Chatterton and Ludvigsen 1976 trilobite
Phacopida - Pterygometopidae	Calyptaulax callirachis Calyptaulax callirachis Cooper 1953 trilobite
Phacopida - Cheiruridae	Holia glabra¹, Acanthoparypha evitti, Heliomeroides teres, Ceraurinella nahanniensis, Sphaerexochus arenosus Holia glabra¹ Adrain 1998 trilobite Acanthoparypha evitti Chatterton and Ludvigsen 1976 trilobite Heliomeroides teres Evitt 1951 trilobite Ceraurinella nahanniensis Chatterton and Ludvigsen 1976 trilobite Sphaerexochus arenosus Chatterton and Ludvigsen 1976 trilobite
Phacopida - Encrinuridae	Cybeloides cimelia, Walencrinuroides rolfi³ Cybeloides cimelia Chatterton and Ludvigsen 1976 trilobite Walencrinuroides rolfi³ Moss and Westrop 2014 trilobite
Ostracoda
-	Ludvigsenites mackenziensis² Ludvigsenites mackenziensis² ostracod
Leperditellocopida - Aparchitidae	"Aparchites" cf. fimbriatus² "Aparchites" cf. fimbriatus² ostracod
Palaeocopida - Leperditellidae	Leperditella mundula² Leperditella mundula² ostracod
Palaeocopida - Lomatopisthiidae	Bolbopisthia ludvigseni² Bolbopisthia ludvigseni² ostracod
Podocopida - Bairdiidae	Krausella ? minuta² Krausella ? minuta² ostracod

¹Adrain 1998; ²Copeland 1974; ³Moss and Westrop 2014