8
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41
53
JAMES, J. 1965. The development of a dicellograptid from the Balclatchie Shales of Laggan Burn. Palaeontology, 8, 1, 41–53.
Judith James This paper decribes the growth series, the thecal morphology, and the origin of the thecae of Dicello-graptus sp. Points of comparison with other dicellograptids are noted. The Palaeontological Association (Free Access)