Transactions of the Royal Society of Edinburgh: Earth Sciences

Research Article

A new chasmataspid (Chelicerata: Chasmataspida) from the Lower Devonian of the Midland Valley of Scotland

Jason A. Dunlop, Lyall I. Anderson and Simon J. Braddya1a2a3

a1 Institut für Systematische Zoologie, Museum für Naturkunde, D-10115 Berlin, Germany

a2 Department of Geology and Petroleum Geology, University of Aberdeen, Aberdeen AB24 3UE, U.K.

a3 Department of Earth Sciences, University of Bristol, Wills Memorial Building, Bristol BS8 1RJ, U.K.

Abstract

A new chasmataspid (Chelicerata, Chasmataspida) is described as Forfarella mitchelli gen. et sp. nov. from the Lower Devonian of Scotland. This species is problematic in that it was catalogued under the name Forfarella mitchelli Waterston (no date), but was never formally described. Furthermore, its type locality is uncertain. Chasmataspids are a poorly known taxon within Chelicerata which appear to be closely related to eurypterids. F. mitchelli is only the fourth chasmataspid species to be described. Though poorly preserved, it shows affinities with other Devonian chasmataspids and supports the hypothesis that this group may have been more geographically widespread in the Devonian than has previously been recognised.

(Received May 20 1998)

(Accepted September 24 1998)

Key Words

  • Arbroath;
  • Forfarella