Circotheca
WebMay 17, 2024 · From our analyses it appears that these characters were obtained in a step-wise fashion, as early orthothecid taxa such as Cupitheca, Conotheca, Circotheca and Pedunculotheca still possessed the ancestral tubular conch (without any distinct differentiation of venter and dorsum), yet had evolved prominent internal structures on …
Circotheca
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WebCircotheca transulcata Qian, 1978 Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Animalia family Circothecidae genus Circotheca ... Web206 E. Wu, R. Van Der Voo and Q. 7. Liang ming, to tite south of Dianchi Lake, tite large Kunyang pitospitonite mine in Jinning County exposes a complete sequence oven a wide area (Hg. 1).
WebThe Sinian-Cambrian boundary is placed at the base of the first Anabarites-Circotheca-Protohertzina Zone. According to isotopic dating by the Rb-Sr whole-rock isochron technique, the age of the Sinian-Cambrian boundary is inferred to be 610+ or -10 Ma.--Modified journal abstract. WebThe Circothecida are a group of hyoliths in which the dorsum and venter are undifferentiated or weakly differentiated (Kruse 2002). <==Circothecida. - …
WebMay 1, 2009 · The Meishucun Stage of the Lower Cambrian can be divided into three fossil zones. The Sinian–Cambrian boundary is placed at the base of the first Anabarites–Circotheca–Protohertzina zone. According to isotopic dating by the Rb–Sr whole-rock isochron technique, the age of the Sinian–Cambrian boundary is inferred to … Webnames Circotheca transulcata is a species of in the family Circothecidae. This species is extinct. They are sessile animals. EOL has data for 7 attributes, including: first …
WebFossilworks hosts query, analysis, and download functions used to access large paleontological data sets. It presents taxonomic, distributional, and ecological data about …
WebFossilworks hosts query, analysis, and download functions used to access large paleontological data sets. It presents taxonomic, distributional, and ecological data about the entire fossil record. incc igpmWebTwo orthothecid hyoliths Probactrotheca briketa new genus and new species and Circotheca smetanai new species are described from the Middle Cambrian Buchava Formation of the Skryje-Týřovice Basin in the Czech Republic. The new forms are based on about twenty well-preserved external and internal moulds of opercula and conchs. incc infusion nurses credential verificationWeb(Orthotheca) stylus Holm, type species of Circotheca Syssoiev, is of special significance as the basis for both a family and an order. The morphology of the species suggests that ordinal status is not warranted. Hyolithus obscurus Holm, on which Linevitus Syssoiev is founded, is known only from poorly preserved internal moulds and is ... incc indice fgvhttp://www.fossilworks.org/cgi-bin/bridge.pl?a=taxonInfo&taxon_no=183767 incc investorshubWebMay 1, 2009 · The earliest skeletal microfauna of Precambrian-Cambrian age recovered from the ‘Lower Tal’ sequence (Chert-Phosphorite to Calcareous members) of the Tal Formation, exposed in the Ganga Valley, Lesser Himalaya, Uttar Pradesh, India, has been grouped into three assemblages. incc issue trakWebHyoliths of the genus Circotheca in the Lower Cambrian of the Taimir National District. Paleontological Zhurnal, 2 : 68 – 78 Google Scholar Syssoiev , V. A. 1968 . in-boud logistics for goat farmWebchrosniaki new species, Sysoievia exilis new genus and species and an indeterminate species of Circotheca. The presence of Obeodalites, Slapylites, and Contitheca … in-body scanner