Suborder Hemiasterina Fischer 1966 (heart urchin)

Echinoidea - Spatangoida

Full reference: A. G. Fischer. 1966. Spatangoids. Treatise on Invertebrate Paleontology, Part U. Echinodermata. Geological Society of America and University of Kansas Press, Boulder and Lawrence 3(2):U543-U628

Parent taxon: Spatangoida according to C. L. C. Manso and E. J. Andrade 2008

See also Fischer 1966, Squires 1984 and Squires 1987

Sister taxa: Allotoxaster, Amoraster, Apoxypetalum, Archaeopneustes, Asterostomatina, Barnumia, Brissidina, Brissoides, Cagaster, Cestobrissus, Cottreaucorys, Echinocoridae, Enichaster, Gonzalezaster, Gymnopatagus, Hemiasteridae, Homoeopetalus, Hypselaster, Kertaster, Leymeriaster, Micrasterina, Mortensenaster, Mundaster, Murraypneustes, Neoproraster, Niponaster, Nudobrissus, Orthaster, Palaeostomidae, Paleopneustina, Paraheteraster, Peraspatangus, Peroniaster, Pictaviechinus, Pliotoxaster, Pseudogibbaster, Pseudolinthia, Pseudowashitaster, Pusillaster, Royasendia, Schizobrissus, Somalechinus, Somaliasteridae, Spatagobrissus, Tessieria, Toxasteridae, Toxasterina, Wuarnia

Subtaxa: Palaeostomatidae

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Ecology: slow-moving shallow infaunal deposit feeder-detritivore

Distribution:

• Paleocene of Austria (1 collection)

• Cretaceous of Germany (1)

Total: 2 collections each including a single occurrence

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