Back Cassiduloides Catalan Cassiduloida CEB Cassiduloida French Cassiduloida Dutch Cassiduloida Portuguese Cassiduloida Swedish Cassiduloida Turkish Cassiduloida WAR
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| Order: | Cassiduloida L. Agassiz & Desor, 1847
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Cassiduloida is an order of sea urchins. The group was extremely diverse with many families and species during the Mesozoic, but today, only seven extant species remain.[1]
A 2019 phylogenetic systematics study by Souto et al. presented a revised classification of the cassiduloids, and hypothesised that the order probably originated in the Early Cretaceous.[1]
- ^ a b Camilla Souto; Rich Mooi; Luciana Martins; Carla Menegola; Charles R. Marshall (2019). "Homoplasy and extinction: the phylogeny of cassidulid echinoids (Echinodermata)". Zoological Journal of the Linnean Society. 2019 (3): 622–660. doi:10.1093/zoolinnean/zlz060.