Maes-y-cwmmer (Gwernau level), Monmouthshire (Carboniferous of the United Kingdom)

Where: United Kingdom (51.7° N, 3.2° W: paleocoordinates 0.2° N, 8.9° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Swansea Member (Pennant Sandstone Formation), Westphalian D (311.4 - 306.9 Ma)

• Upper Coal Measures, Gwernau level of the Mynyddislwyn Vein. Westphalian D according to Waters et al. (2009).

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; siliciclastic sediments

• South Wales coalfield, deposited in Variscan foreland basin

Size class: macrofossils

Preservation: mold/impression

Reposited in the BGS

• Repository: Museum of the Geological Survey/Museum of Practical Geology, Jermyn Street

Primary reference: R. I. Pocock. 1911. A Monograph of the Terrestrial Carboniferous Arachnida of Great Britain 1-84 [M. Clapham/M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 141947: authorized by Matthew Clapham, entered by Matthew Clapham on 03.04.2013, edited by Lindy Edwards

Creative Commons license: CC BY (attribution)

Taxonomic list

Insecta
 Blattodea - Archimylacridae
Archimylacris sp.2 Scudder 1868 cockroach
Pronotum; Museum of Practical Geology 25442
 Blattodea - Necymylacridae
"Gerablattina (Aphthoroblattina) sulcata n. sp." = Necymylacris sulcata1
"Gerablattina (Aphthoroblattina) sulcata n. sp." = Necymylacris sulcata1 Bolton 1911 cockroach
Museum of Practical Geology 24504/24505
 Blattodea -
"Archimylacris (Schizoblatta) obovata n. sp." = Archimylacris obovata1
"Archimylacris (Schizoblatta) obovata n. sp." = Archimylacris obovata1 Bolton 1911 cockroach
Museum of Practical Geology 24506/24507
Xiphosura
 Xiphosurida - Belinuridae
Euproops sp.3, "Euproops meeki n. sp." = Euproops danae3
Euproops sp.3 Meek 1867
"Euproops meeki n. sp." = Euproops danae3 Meek and Worthen 1865
Arachnida
 Trigonotarbida - Aphantomartidae
Aphantomartus areolatus n. gen. n. sp.
Aphantomartus areolatus n. gen. n. sp. Pocock 1911
Museum of Practical Geology 25016/25017, JP565A