Upper Roman Camp Beds, Capel Horeb Quarry (Silurian to of the United Kingdom)

Also known as Halfway Quarry

Where: Wales, United Kingdom (51.0° N, 3.0° W: paleocoordinates 26.0° S, 11.9° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Roman Camp Beds Member (Whitcliffe Formation), Ludfordian to Ludfordian (425.6 - 423.0 Ma)

• Faunal evidence discussed by Potter and Price (1965) usggests a late Ludlow age for these strata, a conclusion supported by the microfossils.

• group of beds-level stratigraphic resolution

Environment/lithology: marginal marine; gray siltstone

• from Upper Roman Camp Beds just below the unconformity. Coalified compression fossils are present throughout the upper layers of grey-blue shaley siltstone.

Size classes: macrofossils, mesofossils, microfossils

Preservation: adpression, coalified, original carbon, original sporopollenin, replaced with pyrite

Collection methods: quarrying, surface (float), chemical, peel or thin section,

• Amalgamation from Heard, 1935; Edwards, 1970; Edwards & Davies, 1976; Edwards, 1982; and Edwards & Rogerson, 1979; Cleal & Thomas, 1995

Primary reference: D. Edwards. 1970. Fertile Rhyniophytina from the Lower Devonian of Britain. Palaeontology 13(3):451-461 [P. Gensel/M. Kotyk]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 10634: authorized by Pat Gensel, entered by Michele Kotyk on 08.06.2001

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
unclassified
  -
Plantae indet.3
Plantae indet.3 Haeckel 1866
sporangia of uncertain affinity
Rhyniaceae
  - Rhyniaceae
Steganotheca striata3
Steganotheca striata3 Edwards 1970
Nematothallus
  -
Nematothallus sp.1
Nematothallus sp.1 Lang 1937
numerous cuticle types Nematothallus. Believed to derive from non-vascular plants
Psilophytopsida
 Psilophytales -
cf. Cooksonia caledonica2, Cooksonia downtonensis n. sp.4, Cooksonia hemisphaerica3
cf. Cooksonia caledonica2
also see Edwards & Rogerson 1979
Cooksonia downtonensis n. sp.4
transferred to S. striata by Edwards 1970b.
Cooksonia hemisphaerica3 Lang 1937
see also Cleal & Thomas, 1995
Hostinella
  -
Hostinella sp.1
Hostinella sp.1 Barrande 1882
Nematoplexus
  -
Nematoplexus sp.1
Nematoplexus sp.1 Lyon 1962
tubes believed to be derived primarily from non-vascular plants
Prototaxites
  -
Prototaxites sp.3
Prototaxites sp.3 Dawson 1859
form genus for wider axes in this case. fungus
Malacostraca
 Archaeostraca -
Dictyocaris sp.1
Dictyocaris sp.1 Salter 1860
arthropod
1Edwards 1982; 2Edwards and Davies 1976; 3Edwards and Rogerson 1979; 4Heard 1939