Cidaris branneri Arnold 1908 (pencil urchin)

Echinoidea - Cidaroida - Cidaridae

Full reference: R. Arnold. 1908. Descriptions of new Cretaceous and Tertiary fossils from the Santa Cruz Mountains, California. Proceedings of the United States National Museum 34(1617):345-389

Belongs to Cidaris according to R. Arnold 1908

See also Clark and Twitchell 1915

Sister taxa: Cidaris (Cidaris), Cidaris admeto, Cidaris alabamensis, Cidaris alata, Cidaris alpis, Cidaris baculifera, Cidaris blandis, Cidaris bowerbankii, Cidaris californicus, Cidaris catenifera, Cidaris cojimarensis, Cidaris cornaliae, Cidaris cubensis, Cidaris curioni, Cidaris dilleri, Cidaris dixiensis, Cidaris fasciculata, Cidaris flexuosa, Cidaris fumagalli, Cidaris georgiana, Cidaris guembeli, Cidaris klipsteini, Cidaris liagora, Cidaris lorenzanus, Cidaris loveni, Cidaris martinezensis, Cidaris modestus, Cidaris moereus, Cidaris mortoni, Cidaris omboni, Cidaris ordinatus, Cidaris parastadifera, Cidaris perdubius, Cidaris perornata, Cidaris plumasensis, Cidaris pratti, Cidaris schlonbachi, Cidaris serrifera, Cidaris shastensis, Cidaris smithi, Cidaris splendens, Cidaris subnobilis, Cidaris subnodosa, Cidaris taylorensis, Cidaris tehamensis, Cidaris texanus, Cidaris tribuloides, Cidaris tubuloides, Cidaris wahalakensis

Type specimen: Leland Stanford Junior University 1056 (External mold of almost perfect spine). Its type locality is Lastro, perto de Maroim, which is in an Albian carbonate limestone in the Riacheulo Formation of Brazil.

Ecology: slow-moving low-level epifaunal grazer-omnivore

Distribution: found only at Bear Creek

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