Brachiopods of the Pridolian of Royal Creek (Silurian of Canada)

Also known as Cryptatrypa triangularis fauna

Where: Yukon Territory, Canada (64.8° N, 135.2° W: paleocoordinates 7.2° N, 46.1° W)

• coordinate estimated from map

• local area-level geographic resolution

When: Pridoli (423.0 - 419.2 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: basinal (); black limestone and black shale

• Interpretation is of a trough surrounded by shallow carbonate platforms. Sections 1,2,4, and 5 are essentially from the former environment and section 3 from the latter.

•SEP environmental call based on given info and regional context

• "...shallow water, light colored carbonates, of which section 3 is a tongue, grade rapidly westward into deep water dark shales and limestones. Shelly faunas are present in the limestones, and graptolites are found in the platy, black shales. Both limestones and shales are highly organic, thus accounting for the black color of the limestones. The dark limestone bands are relatively thin (3-5 m thick) while the shales range from 2 to 20 m in thickness. In addition the relative proportions of shale and carbonates change rapidly westward..."

Size class: macrofossils

Collection methods: Abundances are given (table 1). See PBDB collections 24931, 24932, and 24933 for Lower Lochkovian, Upper Lochkovian, and Pragian lists, taken from Lenz (1999, PBDB ref. 6991), but evidently extracted from this monograph. Systematic treatment is spread over two monographs (PBDB refs. 7341 and 7342), but entire lists are given in this part (ref. 7341).

Primary reference: A. C. Lenz. 1977. Upper Silurian and Lower Devonian brachiopods of Royal Creek, Yukon Canada. Part 1. Orthoida, Strophomenida, Pentamerida, Rhynchonellida. Palaeontographica Abteilung A 159(1-3):37-109 [M. Foote/M. Foote/M. Foote]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 26657: authorized by Michael Foote, entered by Michael Foote on 21.10.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

• Author includes brachiopods and some biostratigraphically useful fossils. Also present in the sections are Pelecypoda, Gastropoda, Bryozoa, Rugosa, Tabulata, Ostracoda, Trilobita, Porifera, Echinodermata, Conodonta, and Graptolithina, but information is not generally given as to occurrence of these additional elements in particular collections.
Strophomenata
 Orthotetida - Chilidiopsidae
"? Coolinia sp." = Fardenia (Coolinia)
"? Coolinia sp." = Fardenia (Coolinia) Bancroft 1949
 Orthotetida - Areostrophiidae
 Strophomenida - Aegiromenidae
Rhynchonellata
 Athyridida - Rhynchospirinidae
Rhynchospirina sp. Schuchert and LeVene 1929
 Athyridida - Meristidae
? Merista sp. Suess 1851
 Athyridida - Nucleospiridae
Nucleospira sp. Hall 1859
 Athyridida - Anoplothecidae
Coelospira pusilla Hisinger 1837
 Terebratulida - Megathyrididae
"Rhynchotreta aff. cuneata" = Argyrotheca cuneata
"Rhynchotreta aff. cuneata" = Argyrotheca cuneata Dalman 1828
 Spiriferida - Ambocoeliidae
 Spiriferida - Delthyrididae
 Pentamerida - Parastrophinidae
Anastrophia sp. Hall 1867
 Pentamerida - Subrianidae
Conchidium sp. Oehlert 1887
 Pentamerida - Pentameridae
? Kirkidium sp. Amsden et al. 1967
 Protorthida - Skenidiidae
 Atrypida - Atrypinidae
Gracianella lissumbra Johnson and Boucot 1967
Spirigerina sp. d'Orbigny 1849
 Atrypida - Lissatrypidae
"Atrypella sp." = Atrypoidea
"Atrypella sp." = Atrypoidea Mitchell and Dun 1920
 Atrypida - Glassiidae
"? Cryptatrypa sp." = Glassia, "Cryptatrypa triangularis" = Glassia, "Cryptatrypa fahraeusi" = Glassia
"? Cryptatrypa sp." = Glassia Davidson 1881
"Cryptatrypa triangularis" = Glassia
"Cryptatrypa fahraeusi" = Glassia
 Rhynchonellida - Trigonirhynchiidae
 Rhynchonellida - Machaerariidae
Ferganella sp. Nikiforova 1937
 Rhynchonellida - Rhynchotrematidae
Stegerhynchus sp. Foerste 1909
 Orthida - Draboviidae
 Orthida - Schizophoriidae
 Orthida - Rhipidomellidae
Dalejina "sp. 1" Havlicek 1953
 Orthida - Dicoelosiidae
Dicoelosia cf. nitida
changed from "Dicaelosia"
 Orthida - Dalmanellidae
Isorthis sp. Kozlowski 1929
Resserella "sp. 1" Bancroft 1928
Resserella "sp. 2" Bancroft 1928
 Orthida - Hesperorthidae
Ptychopleurella sp. Schuchert and Cooper 1931
Dolerorthis "sp. 2" Schuchert and Cooper 1931
Conodonta
 Ozarkodinida -
"Ozarkodina remscheidensis" = Nicollidina remscheidensis
"Ozarkodina remscheidensis" = Nicollidina remscheidensis Ziegler 1960 conodont
 Ozarkodinida - Spathognathodontodae
"Ozarkodina excavata" = Wurmiella excavata
"Ozarkodina excavata" = Wurmiella excavata Branson and Mehl 1933 conodont
Graptolithina
 Bireclinata - Monograptidae
Monograptus ex gr. transgrediens Pemer 1899 graptoloid