Ulster Museum Trench (UMT), NE of Pomeroy (Ordovician of the United Kingdom)

Also known as uppermost 1-1.5 m of Bardahessiagh Fm.; Pomeroy inlier; Craigbardahessiagh

Where: Northern Ireland, United Kingdom (54.6° N, 6.9° W: paleocoordinates 21.5° S, 30.1° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Bardahessiagh Formation, Kirkfieldian (460.9 - 449.5 Ma)

• The fossils come from the topmost 1 to 1.5 m of the Bardahessiagh Formation (always spelled "Bardahessaigh Formation" by Evans, 1993). According to fig. 2 in Evans (1993) the upper Bardahessiagh Fm. is of Kirkfieldian age.

• group of beds-level stratigraphic resolution

Environment/lithology: coastal; micaceous sandstone and poorly lithified, cherty/siliceous grainstone

• "The top of the Bardahessaigh Formation consists of flaggy and micaceous sandstones with thin rottenstone bands packed with fossils."

Size class: macrofossils

Preservation: cast

Collected in 1992

Collection methods: bulk, surface (in situ),

• BELUM = Ulster Museum, Belfast

•Fossils are collected from an excavation site called Ulster Museum Trench, opened in 1992, "aligned north-south on a south-facing slope and cutting down through drift to bedrock" (Evans, 1993). The length of the trench was 33 m.

Primary reference: D. H. Evans. 1994. The Cephalopod Fauna of the Bardahessaigh Formation (Caradoc Series) of Pomeroy, County Tyrone. Irish Journal of Earth Sciences 13:11-29 [B. Kröger/T. Liebrecht/T. Liebrecht]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 89154: authorized by Björn Kröger, entered by Torsten Liebrecht on 07.05.2009

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Orthocerida - Proteoceratidae
Gorbyoceras bilineatum
BELUM K25049, K25050, K25073 to K25075
 Orthocerida - Dawsonoceratidae
? Anaspyroceras sp. Shimizu and Obata 1935
BELUM K25047
 Endocerida - Endoceratidae
Cameroceras sp. Conrad 1842
BELUM K25033
 Oncocerida - Oncoceratidae
? Rizoceras sp. Hyatt 1884
BELUM K25052