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Article: Two Carboniferous blastoids from Scotland

Publication: Palaeontology
Volume: 20
Part: 1
Publication Date: January 1977
Page(s): 225 236
Author(s): D. B. Macurda Jun.
Addition Information

How to Cite

, D. B. J. 1977. Two Carboniferous blastoids from Scotland. Palaeontology20, 1, 225–236.

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The Palaeontological Association (Free Access)


The two fissiculate blastoids, Astrocrinus tetragonus (Austin and Austin, 1843) and Hadroblastus(?) benniei (Etheridge and Carpenter, 1886), occur together in Early Carboniferous Visean (D) sediments of Scotland. Astrocrinus is a small, free-living eleutherozoic blastoid characterized by well-developed surface ornament. The nodes are interpreted as spine bases which, together with some brachioles, probably stabilized the animal on its substrate in periods of higher energy. H.(?) benniei, a stemmed blastoid formerly identified as Phaenoschisma? benniei, extends the known geographic range of Hadroblastus from North America to the British Isles, and the stratigraphic range into the Upper Visean, if the species assignment is correct.
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