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Cribrilinidae
The Cribrilinidae family is a part of the suborder Ascophora within the bryozoa Bryozoa (also known as the Polyzoa, Ectoprocta or commonly as moss animals) are a phylum of simple, aquatic invertebrate animals, nearly all living in sedentary colonies. Typically about long, they have a special feeding structure called a l ...ns. They are characterized by numerous spinose ribs (costae) overarching the frontal membrane of each zooid. Classification The diverse nature of the large number of genera included in this family (115) may require it to be split into several families. *Family Cribrilinidae :*Genus '' Abdomenopora'' :*Genus '' Acanthobaktron'' :*Genus '' Aeolopora'' :*Genus '' Anaptopora'' :*Genus '' Anaskopora'' :*Genus '' Andriopora'' :*Genus '' Angelopora'' :*Genus '' Anornithopora'' :*Genus '' Anotopora'' :*Genus '' Argopora'' :*Genus '' Ascancestor'' :*Genus '' Auchenopora'' :*Genus '' Baptopora'' :*Genus '' Batrachopora'' :*Genus '' Callistopora'' :*Genus '' Ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ascophora
Ascophora is an infraorder under order Cheilostomatida of the Bryozoa. They are now considered a synonym of Flustrina. Ascophorans are distinguished from other cheilostomes in having a completely calcified wall covering their frontal surface apart from the orifice, and possessing an ascus (hence the name of the suborder). The ascus is a water-filled sac of frontal membrane opening at or near the orifice. It functions as a hydrostatic system by allowing water into the space below the inflexible frontal wall when the zooid everts its polypide (feeding tentacles) by muscles pulling the frontal membrane inwards (non-ascophorans do not need this structure as their frontal wall is not calcified). The structure of this frontal wall is the basis of distinguishing the four major subdivisions of the Ascophora, each of which is, however, currently under suspicion of being polyphyletic and/or paraphyletic.Gordon, D.P. 2000. Towards a phylogeny of cheilostomes - morphological models of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cretaceous
The Cretaceous ( ) is a geological period that lasted from about 145 to 66 million years ago (Mya). It is the third and final period of the Mesozoic Era, as well as the longest. At around 79 million years, it is the longest geological period of the entire Phanerozoic. The name is derived from the Latin ''creta'', "chalk", which is abundant in the latter half of the period. It is usually abbreviated K, for its German translation ''Kreide''. The Cretaceous was a period with a relatively warm climate, resulting in high eustatic sea levels that created numerous shallow inland seas. These oceans and seas were populated with now- extinct marine reptiles, ammonites, and rudists, while dinosaurs continued to dominate on land. The world was ice free, and forests extended to the poles. During this time, new groups of mammals and birds appeared. During the Early Cretaceous, flowering plants appeared and began to rapidly diversify, becoming the dominant group of plants across the Earth b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
