Echinoidea note details

Diagnosis
English
eng
Usually large sculptured temnopleurids with strongly crenulate tubercles and sharp gill slits. The pore-pairs of the ambulacra are arranged usually in well-marked arcs within each triad. The apical system is regularly dicyclic. Mature individuals are obscurely sculptured, usually with irregular granules. The perignathic girdle consists of high auricles united above the ambulacra.
Philip, G. M. 1969. The Tertiary echinoids of south-eastern Australia. IV. Camarodonta (2). Proceedings of the Royal Society of Victoria 82, 233-275. available online at https://www.biodiversitylibrary.org/page/57164334 
Date
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2019-05-17 06:22:19Z
created