The Echinoid Directory
Alternechinus cretaceus Schluter, 1870. Original drawings of type in oral, apical and lateral views, from Schluter, C. 1883. Die Regularen Echiniden der norddeutschen Kreide. !, Glyphostoma. Abhandlungen zur geologischen Specialkarte von Preussen 4(1), 1-72, pls 1-7.
Diameter of test 36 mm.