Plagiochasma is an extinct
echinoderm genus in the family Pygaulidae Species includes: Plagiochasma olfersii (L. Agassiz, 1836);
Kaynak: Plagiochasma (echinoderm)Starfish or sea stars are
echinoderm s belonging to the class Asteroidea The names "starfish" and "sea star" essentially refer to members
Kaynak: StarfishSea cucumbers are
echinoderm s from the class Holothuroidea. They are marine animal s with a leathery skin and an elongated body containing
Kaynak: Sea cucumberEleutherozoa is a subphylum of
echinoderm s. They are mobile animals with the mouth directed towards the substrate. They usually have a
Kaynak: Eleutherozoasmall, spiny , globular animals which, with their close kin, such as sand dollars , constitute the class Echinoidea of the
echinoderm phylum.
Kaynak: Sea urchinIt, along with the
echinoderm phylum, including starfish , sea urchins , and sea cucumber s and their kin, are the chordates' closest
Kaynak: ChordateClypeaster, common name "cake urchins" or "sea biscuits", is a genus of
echinoderm s belonging to the family Clypeasteridae .
Kaynak: ClypeasterCrinoids are marine animals that make up the class Crinoidea of the
echinoderm s (phylum Echinodermata). Crinoidea comes from the Greek
Kaynak: CrinoidBrittle stars or ophiuroids are
echinoderm s in the class Ophiuroidea closely related to starfish . They crawl across the seafloor using
Kaynak: Brittle starThe Eocrinoidea are an extinct class of
echinoderm s that lived between the Early Cambrian and Late Silurian periods.
echinoderms, and were
Kaynak: EocrinoideaThe stylophorans are an extinct, possibly polyphyletic group allied to the
echinoderm s, comprising the cornute s and mitrate s It is
Kaynak: StylophoraHelicoplacus (often misspelled Helioplacus) is the earliest well-studied fossil
echinoderm . Fossil plates are known from several regions
Kaynak: HelicoplacusThe Edrioasteroids are an extinct class of
echinoderm that lived from the Ediacaran (if Arkarua was indeed an edrioaster) to the
Kaynak: EdrioasteroideaPlagiochasma (
echinoderm), an extinct
echinoderm genus in the family Pygaulidae. Plagiochasma (liverwort), a plant genus in the family
Kaynak: Plagiochasma