Spiraculata

	Spiraculata Spiraculata is an order of Blastoids. These blastoids are characterized by indirect entrance to the hydrospires through canals by way of pores. Genera '' Acentrotremites'' '' Ambolostoma'' '' Arcuoblastus'' '' Auloblastus'' '' Belocrinus'' '' Calycoblastus'' '' Carpenteroblastus'' '' Conuloblastus'' '' Cordyloblastus'' '' Costatoblastus'' '' Cribroblastus'' '' Cryptoblastus'' '' Decemoblastus'' '' Deliablastus'' ''Deltoblastus'' '' Dentiblastus'' '' Devonoblastus,'' '' Diploblastus'' '' Doryblastus'' '' Elaeacrinus'' '' Eleutherocrinus'' '' Ellipticoblastus'' '' Euryoblastus'' '' Globoblastus'' '' Gongyloblastus'' '' Granatocrinus'' '' Heteroblastus'' '' Houiblastus'' '' Iranoblastus'' '' Kadiskoblastus'' '' Lophoblastus'' '' Malchiblastus'' '' Metablastus'' '' Monadoblastus'' '' Monoblastus'' '' Monoschizablastus'' '' Montanablastus'' '' Nodoblastus'' '' Nucleocrinus'' '' Orbiblastus'' '' Orbitremites'' '' Pentephyllum'' ''Pentremites ... [...More Info...] [...Related Items...] OR:* [Wikipedia] [Google] [Baidu]
picture info	Blastoid Blastoids (class Blastoidea) are an extinct type of stemmed echinoderm, often referred to as sea buds. They first appear, along with many other echinoderm classes, in the Ordovician period, and reached their greatest diversity in the Mississippian subperiod of the Carboniferous period. However, blastoids may have originated in the Cambrian. Blastoids persisted until their extinction at the end of Permian, about 250 million years ago. Although never as diverse as their contemporary relatives, the crinoids, blastoids are common fossils, especially in many Mississippian-age rocks. Description Like most echinoderms, blastoids were protected by a set of interlocking plates of calcium carbonate, which formed the main body, or ''theca''. In life, the theca of a typical blastoid was attached to a stalk or column made up of stacked disc-shaped plates. The other end of the column was attached to the ocean floor by a holdfast, very much like stalked crinoids. The stalk was usually rel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Deltoblastus ''Deltoblastus'' is a genus of blastoid echinoderms that lived in the Permian. Its fossils are known from Asia. References * ''Fossils'' (Smithsonian Handbooks) by David Ward (Page 190) External links''Deltoblastus''in the Paleobiology Database The Paleobiology Database is an online resource for information on the distribution and classification of fossil animals, plants, and microorganisms. History The Paleobiology Database (PBDB) originated in the NCEAS-funded Phanerozoic Marine Paleo ... Blastozoa genera Permian echinoderms Permian animals of Asia {{paleo-echinoderm-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]