Suborder Orthidina Suborder Dalmanellidina Scientific classification or biological classification is a method by which biologists group and categorize species of organisms. ... Animalia redirects here. ... Classes Lingulata Paterinata (extinct) Craniforma Chileata (extinct) Obolellata (extinct) Kutorginata (extinct) Strophomenata (extinct) Rhynchonellata Brachiopods (from Latin bracchium, arm + New Latin -poda, foot) make up one of the major animal phyla, Brachiopoda. ...
Orthida is an extinct order of Brachiopods which appeared during the Early Cambrian period and became very diverse by the Ordovician, living in shallow-shelf seas. Orthids are the oldest member of the Rhynchonelliformea subphylum, and is the order from which all other brachiopods of this group stem. Physically they are usually strophic, with well-developed interareas. They also commonly have radiating ribs, sulcus, and fold structures. Typically one valve, often the brachial valve, is flatter than the other. The interior structure of the brachial valves are usually simple. In shape they are sub-circular to elliptical, with typically biconvex valves. Classes Lingulata Paterinata (extinct) Craniforma Chileata (extinct) Obolellata (extinct) Kutorginata (extinct) Strophomenata (extinct) Rhynchonellata Brachiopods (from Latin bracchium, arm + New Latin -poda, foot) make up one of the major animal phyla, Brachiopoda. ... The Early Cambrian is an geological epoch that is part of the Cambrian Era. ... The Ordovician period is the second of the six (seven in North America) periods of the Paleozoic era. ...
There is some debate over the forms that first appear of this order as to how they should be classified. However they begin to differentiate themselves by the late Early Cambrian period, and by the late Cambrian period had diversified into numerous varieties and reach 2 to 5 cm in width. Specimens from the late Cambrian to the earliest Ordovician exhibit shells with rounded and pointed pedical valves, with sharp to obtuse extremities and ridges that are fine to course. Punctate shells appear during the mid-Ordovician, which establish the suborder Dalmanellidina. The Ordovician is a productive period which gives rise to numerous genera in this order, however they started to become greaty reduced by the end Ordovician extinction event. Both the impunctate and punctate survived through to the early Devonian Eventually though, only the punctate lived on, and would play a minor role in Benthic ecosystems until the late Permian when they became extinct. The Cambrian is a major division of the geologic timescale that begins about 542 Â± 1. ... Disambiguation: Devonian is sometimes used to refer to the Southwestern Brythonic language, and the people of the county of Devon are sometimes referred to as Devonians The Devonian is a geologic period of the Paleozoic era. ... The Permian is a geologic period that extends from about 299. ...
^ Patzkowsky, Mark E (2003). Orthida. McGraw-Hill Encyclopedia of Science & Technology Online. Retrieved on July 24, 2006.
^ Kazlev, M. Alan (1999). Order Orthida. Paleos, Invertebrates. Retrieved on July 24, 2006.
A major change happened to the Orthida that includes 4 superfamilies, 8 families and 11 genera, amongst which 10 genera are new comers in South China, and 5 families are represented by a single genus while 4 of them are new.
The Orthida is a dominant group having 5 superfamilies and 12 families, amongst which 8 are represented by a single genus.
The Orthida is still the most abundant including 5 superfamilies, 15 families and 23 genera (70% of the total), and is the only group that increases its diversity, whereas all the other groups decrease on both generic and familial levels.
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