On the Structure and Affinities of Palaeodiscus and Agelacrinus . blo. 1.—Oust of Prt/*flf//.vc»» in the Oxford Musciitn ; .4m = Flfi. 2.—Upper view of Afjehtrrinvs cinciimaitenuis in tlie Oxfoivl Miiaeuiii :/, //, III, li, T, lire Ambulacra; An = Anus; , flooring plates;s,;., side covering plates ; , mouth corner plute.

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Keywords: ., bookcentury1900, bookdecade1900, booksubjectproceed, bookyear1904