EURHODIIDAE, Souto & Mooi & Martins & Menegola & Marshall, 2019

Souto, Camilla, Mooi, Rich, Martins, Luciana, Menegola, Carla & Marshall, Charles R., 2019, Homoplasy and extinction: the phylogeny of cassidulid echinoids (Echinodermata), Zoological Journal of the Linnean Society 187, pp. 622-660 : 651-652

FAMILY EURHODIIDAE FAM. NOV.

Diagnosis: Cassiduloids with monobasal apical system. Outer column of anterior petals bowed, posterior petals straight or bowed, a and b columns of pore-pairs with equal number of pores; poriferous zone wide; pore-pairs conjugated. Periproct supramarginal or on aboral surface, longitudinal or transverse. Plates framing periproct bent inwards, with adoral plates sometimes forming a subanal shelf. Interambulacrum 5 naked zone wide; pits absent to large. Basicoronal plates usually pitted. Phyllodes small to long; phyllopores uniformly arranged; occluded plates absent, scattered or forming inner column. Peristome pentagonal, (rarely) oval. Bourrelets pointed or (rarely) tooth-like, often formed by depression in basicoronal plates. Sphaeridia in open pits near buccal pores or throughout phyllodes. Oral tubercles usually much larger than aboral tubercles. From living species of Eurhodia and Kassandrina : periproctal membrane with one main row of medium-sized plates and many small plates, anal opening on aboral edge.

Type genus: Eurhodia d’Archiac & Haime, 1853 .

lsid urn:lsid:zoobank.org:pub:F724DA40-7ADE-47F8-8691-3123E89051A4

Included genera: Australanthus , Eurhodia , Glossaster and Kassandrina .

Misclassified eurhodiids in need of reassignment after additional studies: Eu.? australiae .