Echinoidea - Camarodonta - Trigonocidaridae

Alternative spelling: Trigonocidarinae

Full reference: T. Mortensen. 1903. The Danish Ingolf-Expedition 1895–1896. Vol. 4, No. 2. Echinoidea, pt. 1. Bianco Luno, Copenhagen 1-198

Parent taxon: Temnopleuridea according to A. Kroh and A. B. Smith 2010

See also Nisiyama 1966

Sister taxa: Glyphocyphidae, Temnopleuridae, Zeuglopleuridae

Subtaxa: Trigonocidaris

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Ecology: epifaunal grazer-deposit feeder

Distribution: found only at Balai Lontano, meter 17 (Miocene to Miocene of Italy)

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