Brachiopods of the Lower Zlichovian of Royal Creek (Devonian of Canada)

Also known as Sieberella cf. weberi-Nymphorhynchia pseudolivonica unit of Lenz (1968)

Where: Yukon Territory, Canada (64.8° N, 135.2° W: paleocoordinates 1.9° S, 40.5° W)

• coordinate estimated from map

• local area-level geographic resolution

When: Early/Lower Emsian (409.1 - 402.5 Ma)

• Lenz correlates with "some portion of the lower Zlichovian"

• group of beds-level stratigraphic resolution

Environment/lithology: offshore shelf; limestone

• 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 26658: 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.
 Productida - Strophochonetidae
 Orthotetida - Areostrophiidae
 Strophomenida - Douvillinidae
Phragmostrophia cf. merriami Harper et al. 1967
 Strophomenida - Leptaenoideidae
Leptaenisca sp. Beecher 1890
 Strophomenida - Rafinesquinidae
 Strophomenida - Strophodontidae
"aff. Stropheodonta sp." = Strophomena (Strophodonta) Hall 1852
n. gen. aff. S.
Megastrophia iddingsi Merriam 1940
 Spiriferinida - Cyrtinidae
Cyrtina spp. Davidson 1858
"probably includes as many as five or more species"
 Spiriferida - Cyrtiidae
 Spiriferida - Reticulariidae
? Warrenella sp.
"Reticulariopsis? or Warrenella? sp."
? Reticulariopsis sp.
"Reticulariopsis? or Warrenella? sp."
 Pentamerida - Gypidulidae
 Protorthida - Skenidiidae
 Atrypida - Carinatinidae
 Atrypida - Karpinskiidae
 Atrypida - Atrypidae
Desquamatia "sp. 2" Alekseeva 1960
? Desquamatia "sp. 3" Alekseeva 1960
Spinatrypa "sp. 3" Stainbrook 1951
"? Sibirispira bisulcata n. sp." = Spinatrypina
 Rhynchonellida - Trigonirhynchiidae
 Rhynchonellida - Camarotoechiidae
 Orthida - Draboviidae
Salopina sp. Boucot 1960
 Orthida - Schizophoriidae
 Orthida - Rhipidomellidae
Dalejina "sp. 2" Havlicek 1953
 Orthida - Dalmanellidae
 Orthida - Mystrophoridae
 Lingulida - Discinidae
? Schizotreta sp. Kutorga 1848
 Craniida - Craniidae
? Crania sp. Retzius 1781
? Acanthocrania sp. Williams 1943
 Panderodontida - Panderodontidae
Panderodus unicostatus Branson and Mehl 1933 conodont
 Ozarkodinida - Polygnathidae