Additional Voorstehoek Formation Echinoderms, South Africa (Devonian of South Africa)

Where: South Africa (33.0° S, 20.0° E: paleocoordinates 65.2° S, 155.1° W)

• coordinate estimated from map

• basin-level geographic resolution

When: Voorstehoek Formation, Eifelian (393.3 - 387.7 Ma)

• lowest Eifelian

• formation-level stratigraphic resolution

Environment/lithology: marine; bioturbated siltstone and bioturbated, silty mudstone

• Ref. 9618 gives interpretation of Bokkeveld Group as a series of shallowing-upward packages, with argillaceous unit below and arenaceous unit above. Voorstehoek Formation is the "second shale", i.e. the second argillaceous unit. The shallowing upward sequence is interpreted as representing environments from the shelf up to deltaic systems. Most fossils come from lower mudstones, often in lenses.
• Ref. 9617, for formation as a whole, cites "Siltstone, silty mudstone, parallel-laminated, massive, horizontal, ripple- and micro cross laminated, abundant ripple-marks, bioturbation, fossiliferous lenses."

Collection methods: Included are occurrences that cannot obviously be assigned to one of the localities of ref. 9616.

Primary reference: P. A. Jell and J. N. Theron. 1999. Early Devonian echinoderms from South Africa. Memoirs of the Queensland Museum 43(1):115-199 [M. Foote/M. Foote/M. Foote]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 39148: authorized by Michael Foote, entered by Michael Foote on 21.05.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

• Echinoderms only.
Ophiuroidea
  -
Ophiuroidea indet. Gray 1840 brittle star
 Oegophiurida - Protasteridae
Strataster sp. Kesling and Le Vasseur 1971 brittle star
  - Encrinasteridae
Encrinaster tischbeinianus Roemer 1864 brittle star