Mweelrea Mountain, west side (Ordovician of Ireland)

Where: Connacht, Ireland (53.6° N, 9.9° W: paleocoordinates 25.1° S, 35.7° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Uggool Member (Mweelrea Formation), Llanvirn (468.0 - 458.4 Ma)

• " [...] Ugool Member of the Mweelrea Formation." (Evans, 1996). According to Draut et al. (2004, Geol. Mag. 141(2)) the Mweelrea Fm. is a subunit of the Murrisk Group.

• member-level stratigraphic resolution

Environment/lithology: marginal marine; sandstone and volcaniclastic

• The presence of coarse clastics suggests that the deposits represent a nearshore environment. According to Draut et al. (2004) the entire Murrisk Group is a series deposited in a post collisional (Grampian Orogeny) foreland basin.
• "The Llanvirn Mweelrea Formation, at the top of the Murrisk Group, is dominated by quartz sandstones but contains ignimbrites." (Draut et al., 2004)

Size class: macrofossils

Preservation: mold/impression

Collected in 1993

• TCD = Trinity College, Dublin

Primary reference: D. H. Evans. 1996. Ugooloceras oblatum gen. and sp. nov., an Annulate Orthocerid (Orthocerida, Nautiloidea) from the Llanvirn Series of County Mayo. Irish Journal of Earth Sciences 15:71-76 [B. Kröger/T. Liebrecht]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 89286: authorized by Björn Kröger, entered by Torsten Liebrecht on 13.05.2009

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Cephalopoda
 Dissidocerida - Geisonoceratidae
Ugooloceras oblatum
Ugooloceras oblatum Evans 1996
TCD.1135 to 1137