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Praenuculinae
Praenuculinae is an extinct subfamily of prehistoric bivalves in the family Praenuculidae. Praenuculinae species lived from the middle Ordovician through the late Devonian.The Paleobiology Database Praenuculinae entry accessed 5 February 2012.The Paleobiology Database ''Praenucula'' entry accessed 5 February 2012. Praenuculinae fossils are found in Europe, Africa, North America and South America, [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cuyopsis
''Cuyopsis'' is an extinct genus of bivalve in the extinct family Praenuculidae. The genus is one of eleven genera in the subfamily Praenuculinae. It is one of three Praenuculinae genera known solely from late Ordivician, Caradoc epoch, fossils found in South America. ''Cuyopsis'' currently contains a single accepted species, ''Cuyopsis symmetricus''. Description ''Cuyopsis symmetricus'' was first described in 1999 by Teresa M. Sánchez from fossils in sediments of the late Middle Ordivician, Caradocian aged Don Braulio Formation. The formation outcrops on the flank of Sierra de Villicum in the Argentina precordillera Precordillera is a Spanish geographical term for hills and mountains lying before a greater range, foothills. The term is derived from ''cordillera'' (mountain range)—literally "pre-mountain range"—and applied usually to the Andes. Some places .... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Villicumia
''Villicumia'' is an extinct genus of bivalve in the extinct family Praenuculidae. The genus is one of eleven genera in the subfamily Praenuculinae. It is one of three Praenuculinae genera known solely from Ordovician, late Ordovician, Caradoc epoch, fossils found in South America. ''Villicumia'' currently contains a monotypic, single accepted species, ''Villicumia canteraensis''. Description ''Villicumia canteraensis'' was first described in 1999 by Teresa M. Sánchez from fossils in sediments of the late Middle Ordovician, Caradocian aged Don Braulio Formation. The formation outcrops on the flank of Sierra de Villicum in the Argentina precordillera.The Paleobiology database "Sierra de Villicum" entry accessed 9 February 2012 The shells of '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trigonoconcha
''Trigonoconcha'' is an extinct genus of bivalve in the extinct family Praenuculidae. The genus is one of eleven genera in the subfamily Praenuculinae. It is one of three Praenuculinae genera known solely from Late Ordivician, Caradoc epoch, fossils found in South America. ''Trigonoconcha'' currently contains a single accepted species, ''Trigonoconcha acuta''. Description ''Trigonoconcha acuta'' was first described in 1999 by Teresa M. Sánchez from fossils from sediments of the late Middle Ordivician, Caradocian aged Don Braulio Formation. The formation outcrops on the flank of Sierra de Villicum in the Argentina precordillera.The Paleobiology database "Sierra de Villicum" entry accessed 11 February 2012 The shells of ''Trigonoconcha'' ha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Praenuculidae
Praenuculidae is an extinct family (biology), family of prehistoric bivalves in the superfamily (taxonomy), superfamily Nuculoidea. Praenuculidae species lived from the early Ordovician, Arenig, Arenig stage through the Early Devonian Emsian, Emsian stage.The Paleobiology Database Praenuculidae entry accessed 11 January 2012 Praenuculidae fossils are found worldwide, present on every continent except Antarctica. Species in this family are thought to have been Sessility (zoology), sessile, attached to the substrate in shallow infaunal marine water environments, where they formed shells of an aragonite composition. The family Praenuculidae was named by A. Lee McAlester in 1969. Description Praenuculidae first eme ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Concavodontinae
Concavodontinae is an extinct subfamily of prehistoric bivalves in the family Praenuculidae. Concavodontinae species lived from the middle Ordovician, Caradoc epoch through the late Ordovician Ashgill epoch.The Paleobiology Database Concavodontinae entry accessed 19 January 2012The Paleobiology Database ''Concavodonta'' entry accessed 19 January 2012 Concavodontinae fossils are found in Europe and South America, and species are thought to have been stationary attached to substrate in sh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Similodonta
''Similodonta'' is an extinct genus of early bivalve in the extinct family Praenuculidae. The genus is one of eleven genera in the subfamily Praenuculinae. ''Similodonta'' is known from Middle Ordovician through Middle Silurian fossils found in Europe and North America. The genus currently contains eight accepted species, ''Similodonta ceryx'', ''Similodonta collina'', ''Similodonta djupvikensis'', ''Similodonta magna'', ''Similodonta recurva'', ''Similodonta spjeldnaesi'', ''Similodonta wahli'' and the type species ''Similodonta similis''. Description ''Similodonta'' is a small bivalve which was first described in 1964 by Helen Soot-Ryen in an ''Arkiv för Mineralogi och Geologi, Kungliga Svenska Vetenskapsakademien'' paper. Generally the shells of ''Similodonta'' are rounded on the ventral sides of the shell and triangular on the dorsal sides. The triangular shape on the dorsal side is formed by the sharp angle at which the anterior and posterior hinge edges meet at the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arenig
In geology, the Arenig (or Arenigian) is a time interval during the Ordovician period and also the suite of rocks which were deposited during this interval. History The term was first used by Adam Sedgwick in 1847 with reference to the "Arenig Ashes and Porphyries" in the neighbourhood of Arenig Fawr, in Merioneth, North Wales. The rock-succession in the Arenig district has been recognized by W. G. Fearnsides (“On the Geology of Arenig Fawr and Moel Llanfnant", Q.J.G.S. vol. lxi., 1905, pp. 608–640, with maps). The above succession is divisible into: # A lower series of gritty and calcareous sediments, the "Arenig Series" as it is now understood; # A middle series, mainly volcanic, with shale, the " Llandeilo Series"; and # The shale and limestones of the Bala Bala may refer to: Places India *Bala, India, a village in Allahabad, India * Bala, Ahor, a village in the Jalore district of Rajasthan * Bala, Raebareli, a village in Uttar Pradesh, India Romania * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subfamily (biology)
In biological classification, a subfamily (Latin: ', plural ') is an auxiliary (intermediate) taxonomic rank, next below family but more inclusive than genus. Standard nomenclature rules end subfamily botanical names with "-oideae", and zoological names with "-inae". See also * International Code of Nomenclature for algae, fungi, and plants The ''International Code of Nomenclature for algae, fungi, and plants'' (ICN) is the set of rules and recommendations dealing with the formal botanical names that are given to plants, fungi and a few other groups of organisms, all those "trad ... * International Code of Zoological Nomenclature * Rank (botany) * Rank (zoology) Sources {{biology-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Treatise On Invertebrate Paleontology
The ''Treatise on Invertebrate Paleontology'' (or ''TIP'') published by the Geological Society of America and the University of Kansas Press, is a definitive multi-authored work of some 50 volumes, written by more than 300 paleontologists, and covering every phylum, class, order, family, and genus of fossil and extant (still living) invertebrate animals. The prehistoric invertebrates are described as to their taxonomy, morphology, paleoecology, stratigraphic and paleogeographic range. However, taxa with no fossil record whatsoever have just a very brief listing. Publication of the decades-long ''Treatise on Invertebrate Paleontology'' is a work-in-progress; and therefore it is not yet complete: For example, there is no volume yet published regarding the post-Paleozoic era caenogastropods (a molluscan group including the whelk and periwinkle). Furthermore, every so often, previously published volumes of the ''Treatise'' are revised. Evolution of the project Raymond C. Moor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
