Cowie Harbour, Stonehaven (NMS collection) (Silurian of the United Kingdom)

Where: Scotland, United Kingdom (57.0° N, 2.2° W: paleocoordinates 16.6° S, 17.1° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Dictyocaris Member (Cowie Formation), Homerian (430.5 - 427.4 Ma)

• The Stonehaven Group was originally thought to be Pridoli (latest Silurian) in age. However, recent work on palynological assemblages has indicated a late Wenlock to early Ludlow age (mid Silurian) (Marshall 1991; Wellman, 1993). The Dictyocaris Member includes the Cowie Harbour fish bed. U-Pb radiometric dates instead suggest an age range of 414-413 Ma, or earliest Devonian (Suarez et al., 2017). Wellman et al. (2023) reevaluated the biostratigraphy and U-Pb data to support a late Wenlock age.

• group of beds-level stratigraphic resolution

Environment/lithology: fluvial; lithified shale

• This series of shales and mudstones was probably deposited by braided stream systems (Gillen and Trewin, 1987).

Size class: macrofossils

Preservation: mold/impression

Collection methods: Repository: National Museums of Scotland, Edinburgh (NMS)

Primary reference: H. M. Wilson and L. I. Anderson. 2004. Morphology and taxonomy of Paleozoic millipedes (Diplopoda: Chilognatha: Archipolypoda) from Scotland. Journal of Paleontology 78(1):169-184 [J. Mueller/T. Liebrecht/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 84333: authorized by Mark Uhen, entered by Mark Uhen on 09.10.2008, edited by Matthew Clapham

Creative Commons license: CC BY (attribution)

Taxonomic list

 Birkeniida -
Cowielepis ritchiei n. gen. n. sp.
Cowielepis ritchiei n. gen. n. sp. Blom 2008
Pneumodesmus newmani n. gen. n. sp.
Pneumodesmus newmani n. gen. n. sp. Wilson and Anderson 2004 millipede
NMS G.2001.109.1