New crinoids from coplow knoll, clitheroe, with lists of carboniferous limestone crinoid species
- 193-213p. Illustration
Extract One purpose of this paper is to place on record a new crinoid genus from Coplow Knoll, Clitheroe. The name Edapocrinus is proposed for its reception. Another is to note the discovery of two nearly complete crinoids at the same locality. This type of preservation is very rare at Coplow since the great majority of specimens found there consist of calices only and, except Actinocrinus and allied genera which have the lower brachials incorporated in the cup, it is only on a rare occasion that one finds a cup with any portion of the arms in position. In a paper to this Magazine, (1928, p. 246), I noted the discovery of the rare Flexible species, Euryocrinus rofei Bather and Gregory, which had part of the arms preserved, and remarked then on the scarcity of complete specimens of any species. Besides Coplow, this seems to apply to all the knolls in the Clitheroe region. Phillips, in his Geology of Yorkshire (1836), describes a considerable number of species from “Bolland”, most of which appear to have been collected by Gilbertson of Preston, and possibly some of the specimens were found at Coplow. All are cups only, with the exception of Poteriocrinus, now Taxocrinus nobilis, which is a complete crown. On different occasions during the last eight years, when I have made an annual visit to Coplow, I have found odd portions of arms, greatly displaced and not attached to any cup, usually in such a jumbled state that they were indeterminable.
Crinoids - Cplow knoll - Clitheroe Carboniferous limestone crinoid species