Suborder Laganina Mortensen 1948 (sand dollar)

Echinoidea - Clypeasteroida

Full reference: T. Mortensen. 1948. A Monograph of the Echinoidea. IV, 2. Clypeasteroida. Clypeasteridæ, Arachnoidæ, Fibulariidæ, Laganidæ and Scutellidæ. C. A. Reitzel, Copenhagen 1-471

Parent taxon: Clypeasteroida according to J. W. Durham 1955

See also Donovan 1993, Durham 1966 and Kier 1968

Sister taxa: Clypeasterina, Conoclypeidae, Faujasiidae, Oligopygidae, Plesiolampadidae, Prowillungaster, Rotulina, Runa, Scutellina, Tournoueraster, Willungaster

Subtaxa: Neolaganidae Pentedium

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Ecology: slow-moving semi-infaunal detritivore

Distribution:

• Miocene of United States (1: Florida collection)

• Oligocene of Cuba (1), United States (3: Alabama, Florida)

• Eocene of Jamaica (1), Panama (2), United States (17: Alabama, Florida, Georgia)

Total: 25 collections including 41 occurrences

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