New discoveries of Isochirotherium herculis (Egerton 1838) and a reassessment of chirotheriid footprints from the Triassic of the Isle of Arran, Scotland

N. D. L. Clark; H. Corrance

doi:10.1144/0036-9276/01-362

Synopsis

Several in situ trackways and individual chirotheriid footprints have been found at a number of locations along the southern coast of the Isle of Arran. A locality on the coast near Sliddery has five trackways with three of over 17 footprints and one locality west of Kildonan also has a trackway with over 10 footprints. They are all from the Triassic Auchenhew Beds, but may belong to several levels within these beds. The state of preservation of the footprints is variable, but a combination of morphological characters and landmark polygons suggests that they belong to Isochirotherium herculis (Egerton) 1838. Previously described footprints from Arran, originally described as Chirotherium barthii (Clark et al. 2002), are reidentified as I. herculis.

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