Brachiopods of the Lower Lochkovian of Royal Creek, Yukon (Devonian of Canada)

Also known as Spirigerina-Ancillotoechia Community

Where: Yukon, Canada (65.0° N, 135.0° W: paleocoordinates 3.7° N, 43.6° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Road River Group, Lochkovian (419.2 - 410.8 Ma)

• Lower Lochkovian strata of section 2, 140-190 m.

Environment/lithology: slope; carbonate and siliciclastic

• "This community is everywhere typically found in deep water, basin-slope deposits. Debris flows are common, and gbraded beds may be present. A relatively deep and quiet water setting is proposed...Probably intergrades with the slightly shallower (BA 3) Atrypa-Gypidula community."

•SEP environmental call based on given info. and regional context

• Elsewhere (Lenz 1982, PBDB ref. 7001), this sequence is described as consisting of mixed basinal carbonates and clastics.

Collection methods: "Bulk faunal composition." Brachiopods are assigned to five abundance categories.

Primary reference: A. C. Lenz. 1999. Wenlockian to Pragian brachiopod communities of the northern Canadian Cordillera. In A. J. Boucot and J. D. Lawson (eds.), Paleocommunities--a case study from the Silurian and Lower Devonian 784-792 [M. Foote/M. Foote/M. Foote]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 24931: authorized by Michael Foote, entered by Michael Foote on 23.08.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Strophomenata
 Orthotetida - Areostrophiidae
Drahanostrophia sp., Aesopomum varistriata, Aesopomum regularis
 Strophomenida - Leptostrophiidae
Leptostrophia cf. inequicostella
 Strophomenida - Amphistrophiidae
? Mesodouvillina cf. mirabilis
 Strophomenida - Rafinesquinidae
Leptagonia sp.
Rhynchonellata
 Pentamerida - Parastrophinidae
Anastrophia sp.
Anastrophia sp. Hall 1867
 Pentamerida - Gypidulidae
Gypidula pelagica
 Spiriferida - Delthyrididae
Howellella aff. laeviplicata
 Spiriferida - Xenomartiniidae
? Altajella sp.
? Altajella sp. Kulkov 1962
 Spiriferida - Ambocoeliidae
Ambocoelia sp.
Ambocoelia sp. Hall 1860
 Athyridida - Meristellidae
Meristella sp.
 Athyridida - Nucleospiridae
Nucleospira laevigata, Nucleospira sp.
Nucleospira sp. Hall 1859
 Athyridida - Anoplothecidae
? Coelospira pusilla
? Coelospira pusilla Hisinger 1837
 Atrypida - Punctatrypidae
Reticulatrypa norrisi, ? Reticulatrypa cf. granulifera
 Atrypida - Atrypinidae
"Ogilviella rotundata" = Rhynchogilviella, Spirigerina marginaliformis
"Ogilviella rotundata" = Rhynchogilviella
 Atrypida - Lissatrypidae
? Lissatrypa sp.
? Lissatrypa sp. Twenhofel 1914
 Atrypida - Atrypidae
Atrypa (Gotatrypa) sp., Spinatrypina sp., Desquamatia filistriata
Spinatrypina sp. Rzhonsnitskaya 1964
sp. 1
 Spiriferinida - Cyrtinidae
Cyrtina spp.
Cyrtina spp. Davidson 1858
 Protorthida - Skenidiidae
Skenidioides variabilis
 Rhynchonellida - Trigonirhynchiidae
Ancillotoechia infelix, Ancillotoechia gutta
 Rhynchonellida - Machaerariidae
"Machaeraria paraformosus" = Machaeraria paraformosa
"Machaeraria paraformosus" = Machaeraria paraformosa Lenz 1977
 Orthida - Schizophoriidae
Schizophoria cf. paraprima
Schizophoria cf. paraprima Johnson et al. 1973
 Orthida - Draboviidae
Talentella submurifer
 Orthida - Dicoelosiidae
Dicoelosia cf. nitida
 Orthida - Rhipidomellidae
Dalejina sp.
Dalejina sp. Havlicek 1953
sp. 2
 Orthida - Dalmanellidae
Resserella sp., Tyersella jubar, Protocortezorthis aff. fornicatimcurvata, Isorthis sp.
Resserella sp. Bancroft 1928
sp. 2
Isorthis sp. Kozlowski 1929