Camnant Brook section (D. artus Biozone) (Ordovician of the United Kingdom)

Also known as locality 21; Afon Camnant; Builth-Llandrindod inlier; Gilwern Hill

Where: Wales, United Kingdom (52.2° N, 3.3° W: paleocoordinates 58.7° S, 18.7° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Didymograptus artus graptolite zone, Camnant Mudstone Formation, Abereiddian (468.0 - 461.1 Ma)

• see comments on geography

• group of beds-level stratigraphic resolution

Environment/lithology: transition zone or lower shoreface; burrowed siltstone and lenticular, fine-grained sandstone

• The predominance of bioturbated siltstones suggests that the deposits represent a lower shoreface environment.
• "The succession at this locality [...] consists of siltstones and fine sandstones [...]. The latter are lenticular. Ripple lamination, hummocky cross-stratification and bioturbation are all evident. The fine sandstones are normally thin (0.05-0.3 m), and commonly contains coquinas. In the siltstones fossils are more sporadic." (Evans, 1992)

Size class: macrofossils

Preservation: cast

Collection methods: bulk, mechanical,

• NMW = National Museums and Galleries of Wales

•"Material from Camnant Brook was collected in bulk from a single lenticle and extracted using a hydraulic rock splitter." (Evans, 1992).

Primary reference: D. H. Evans. 2005. The Lower and Middle Ordovician cephalopod faunas of England and Wales. Monograph of the Palaeontographical Society 623:1-81 [B. Kröger/B. Kröger/B. Kröger]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 89313: authorized by Björn Kröger, entered by Torsten Liebrecht on 15.05.2009

Creative Commons license: CC BY (attribution)

Taxonomic list

• The taxonomic list includes specimens referred to as "Dideroceras sp. nov." and/or "Cyclostomiceratidae gen. et sp. nov." in Evans (1992).
Show authors, comments, and common names
Cephalopoda
 Endocerida - Endoceratidae
Dideroceras festinans
Dideroceras festinans Blake 1882
NMW 88.30G.59a, 60 to 63, 65, 66, 208
 Ellesmerocerida - Eothinoceratidae
Sacerdosoceras promus
Sacerdosoceras promus Evans 2005
NMW 88.30G.206, 88.30G.207