Section SHID, Mary Creek, Ukalunda Beds (Devonian of Australia)

Where: Queensland, Australia (20.9° S, 147.2° E: paleocoordinates 1.9° S, 166.0° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Ukalunda Beds Formation, Early/Lower Emsian (409.1 - 402.5 Ma)

• Age call based on conodont Polygnathus perbonus found from base and 111.6 m above base of section HID (which has collections going up to 144 m).

•JA: originally entered as Emsian; the perbonus zone is early Emsian

• group of beds-level stratigraphic resolution

Environment/lithology: marine; gray, green, cherty/siliceous siltstone and sandstone

• 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.

Size class: macrofossils

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 39879: authorized by Michael Foote, entered by Michael Foote on 10.06.2004, edited by Mihaela Krause

Creative Commons license: CC BY (attribution)

Taxonomic list

• Generally brachiopods only; one conodont also reported from one section (HID).
 Ozarkodinida - Polygnathidae
 Productida - Strophochonetidae
? Protochonetes sp. Muir-Wood 1962
 Strophomenida - Douvillinidae
"Mesodouvillina (Protocymostrophia) cf. dickinsi" = Cymostrophia (Protocymostrophia)
"Mesodouvillina (Protocymostrophia) cf. dickinsi" = Cymostrophia (Protocymostrophia)
 Strophomenida - Leptostrophiidae
 Athyridida - Anoplothecidae
Coelospira sp. Hall 1863
 Spiriferida - Delthyrididae
? Howellella sp. Kozlowski 1946
 Spiriferida - Xenomartiniidae
? Quadrithyrina sp. Havlicek 1959
 Pentamerida - Gypidulidae
Gypidulinae indet. Schuchert and Le Vene 1929
 Atrypida - Carinatinidae
 Atrypida - Atrypidae
 Orthida - Rhipidomellidae
 Orthida - Dalmanellidae