Cidaroida, also known as pencil urchins, is an order of primitive sea urchins, the only living order of the subclass Perischoechinoidea. All other orders...
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sandstones. Archaeocidaris brownwoodensis, Cidaroida, Carboniferous, c. 300 mya Miocidaris coaeva, Cidaroida, Middle Triassic, c. 240 mya Clypeus plotti...
80 KB (8,034 words) - 07:49, 2 November 2024
regions of the Atlantic Ocean. As a member of the basal echinoid order Cidaroida, its morphological, developmental and molecular genetic characteristics...
12 KB (1,262 words) - 19:31, 1 October 2024
Cidaridae is a family of sea urchins in the order Cidaroida. Cidarid sea urchins are characterized by their stout skeleton : the test is thick and hard...
6 KB (422 words) - 15:53, 26 June 2024
euechinoid sea urchins became common. Today, only a single order, the Cidaroida, survives. Most fossil forms had multiple columns of ambulacral plates...
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(plant), a plant genus in the Linaceae family Radiola, the spines of fossil Cidaroida sea urchins Radiola, a 1920s line of radios by RCA Radiola, a brand name...
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1–180, retrieved 2019-02-06 B. M. Cutress. 1980. Cretaceous and Tertiary Cidaroida (Echinodermata: Echinoidea) of the Caribbean Area. Bulletins of American...
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Eukaryota Kingdom: Animalia Phylum: Echinodermata Class: Echinoidea Order: Cidaroida Family: Cidaridae Genus: Austrocidaris Species: A. canaliculata Binomial...
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Eukaryota Kingdom: Animalia Phylum: Echinodermata Class: Echinoidea Order: Cidaroida Family: Cidaridae Genus: Acanthocidaris Species: A. hastigera Binomial...
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Sri Lanka is a tropical island situated close to the southern tip of India. The invertebrate fauna is as large as it is common to other regions of the...
23 KB (2,211 words) - 00:20, 11 December 2023