CL172, Douglas Creek siltstones, N Queensland (Devonian of Australia)

Where: Queensland, Australia (22.9° S, 147.7° E: paleocoordinates 7.1° S, 166.7° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Douglas Creek Formation, Emsian (407.6 - 393.3 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; micaceous, brown, gray siltstone

• Shallow marine
• Ukalunda Beds include siltstone, sandstone, limestone, and calcareous shale. Localities B220 and B610F occur in dark brown to khaki, highly jointed calcareous siltstone. Other Ukalunda spot localities not listed in detail. Douglas Creek siltstone (locality CL172) is grey to brown, well bedded, micaceous siltstone overlying the Douglas Creek limestones. The SHID section consists of olive-grey, thin-bedded, cherty siltstone and medium to coarse lithic arenite. Douglas Creek siltstones are overlain, apparently conformably, by Theresa Creek Volcanics.

Primary reference: G. A. Brock and J. A. Talent. 1993. Emsian (Early Devonian) brachiopods from the Ukalunda Beds and Douglas Creek, north Queensland. Memoirs of the Association of Australasian Palaeontologists 15:225-248 [M. Foote/M. Foote/M. Foote]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 39880: authorized by Michael Foote, entered by Michael Foote on 10.06.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

• Generally brachiopods only; one conodont also reported from one section (HID).
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Strophomenata
 Strophomenida - Leptostrophiidae
Mesoleptostrophia (Paraleptostrophia) clarkei
 Strophomenida - Douvillinidae
Nadiastrophia patmorei, "Mesodouvillina (Protocymostrophia) cf. dickinsi" = Cymostrophia (Protocymostrophia)
"Mesodouvillina (Protocymostrophia) cf. dickinsi" = Cymostrophia (Protocymostrophia)
 Strophomenida - Strophochonetidae
? Protochonetes sp.
? Protochonetes sp. Muir-Wood 1962
Rhynchonellata
 Spiriferida - Delthyrididae
? Howellella sp.
? Howellella sp. Kozlowski 1946
 Athyridida - Anoplothecidae
Coelospira sp.
Coelospira sp. Hall 1863