Dun Glas (Jurassic of the United Kingdom)

Where: Scotland, United Kingdom (58.1° N, 3.7° W: paleocoordinates 48.8° N, 6.2° E)

• coordinate stated in text

• small collection-level geographic resolution

When: Fittoni ammonoid zone, Helmsdale Boulder Beds Formation, Tithonian (152.1 - 145.0 Ma)

• upper part of the Helmsdale Boulder Beds. Bolonian Secondary Stage

• formation-level stratigraphic resolution

Environment/lithology: marine; lithified, conglomeratic conglomerate

• The Helmsdale Boulder Beds consists principally of boulder beds produced by the movement on the Helmsdale Fault which formed the northwestern margin of a half-graben. The environmental interpretation of these unusual units is still debated.
• The Boulder Beds are largely composed of Old Red Sandstone clasts.

Size class: macrofossils

Preservation: mold/impression

Collected by J. C. W. Cope

Collection methods: surface (in situ),

Primary reference: J. C. W. Cope. 2015. The Upper Jurassic ammonite Virgatopavolovia from NE Scotland: implications for palaeogeography and phylogeny. Scottish Journal of Geology 51:57-62 [A. McGowan/A. McGowan]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 169043: authorized by Alistair McGowan, entered by Alistair McGowan on 05.05.2015

Creative Commons license: CC BY (attribution)

Taxonomic list

• Unidentified ammonite with Liostrea multiformis
Show authors, comments, and common names
Cephalopoda
 Belemnitida -
Pachyteuthis sp.
Pachyteuthis sp. Bayle 1878 belemnite
NMW2013.32G.4
 Ammonitida - Perisphinctidae
Virgatopavlovia cf. houstoutensis, Pavlovia sp.
Virgatopavlovia cf. houstoutensis Cope 1978 ammonite
NMW2013.32G.1 and 2
Pavlovia sp. Sepkoski 2002 ammonite
NMW2013.32G.3
Bivalvia
 Ostreida - Gryphaeidae
Liostrea multiformis
Liostrea multiformis Koch and Dunker 1837 oyster
Text refers to specimens plural