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Ptychitoidea
Ptychitoidea, formerly Ptychitacheae, is a superfamily of typically involute, subglobular to discoidal Ceratitida in which the shell is smooth with lateral folds or striations, inner whorls are globose, and the suture is commonly ammonitic. Their range is Middle_ and Upper Triassic. In its present configuration the Ptychitoidea includes three families, the: * Ptychitidae * Eosagenitidae * Sturiidae This differs from the taxonomy in the ''Treatise on Invertebrate Paleontology The ''Treatise on Invertebrate Paleontology,'' published from 1953–2007 by the Geological Society of America and the University of Kansas, then 2009–present by the University of Kansas Paleontological Institute, is a definitive multi-authore ...'', Part L, in which the Ptychitoidea included the *Ptychitidae * Isculitidae * Nannititdae The Isculitidae have since been removed to the Pinacocerataceae and the Nannitidae to the Danubitaceae. Fossils of Ptychitoidea have been found in the Triassic of C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ceratitida
Ceratitida is an order that contains almost all ammonoid cephalopod genera from the Triassic as well as ancestral forms from the Upper Permian, the exception being the phylloceratids which gave rise to the great diversity of post-Triassic ammonites. Ceratitids overwhelmingly produced planospirally coiled discoidal shells that may be evolute with inner whorls exposed or involute with only the outer whorl showing. In a few later forms the shell became subglobular, in others, trochoidal or uncoiled. Sutures are typically ceratitic, with smooth saddles and serrate or digitized lobes. In a few the sutures are goniatitic while in others they are ammonitic. Taxonomy * Ceratitida ** Ceratitoidea ** Choristoceratoidea ** Clydonitoidea ** Danubitoidea ** Dinaritoidea ** Lobitoidea ** Meekoceratoidea ** Megaphyllitoidea ** Nathorstitoidea ** Noritoidea ** Otoceratoidea ** Pinacoceratoidea ** Ptychitoidea ** Sageceratoidea ** Tropitoidea ** Xenodiscoidea Only eight superfamilies ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ptychitidae
The Ptychitidae is a family of ceratitid ammonites (''ammonites sensu lato''). They are combined with the Eosagenitidae and Sturiidae in the superfamily Ptychitoidea. Ptychitid genera have compressed, involute shells in which the inner whorls are covered by the outermost, that may be ribbed or smooth, and ammonitic sutures with secondary elements. Genera *'' Arctoptychites'' *'' Aristoptychites'' *'' Eosturia'' *'' Flexoptychites'' *'' Istreites'' *'' Lanceoptychites'' *'' Malletoptychites'' *'' Ptychites'' References * Arkell, et al., 1957. Mesozoic Ammonoidea, ''in the'' Treatise on Invertebrate Paleontology The ''Treatise on Invertebrate Paleontology,'' published from 1953–2007 by the Geological Society of America and the University of Kansas, then 2009–present by the University of Kansas Paleontological Institute, is a definitive multi-authore ..., Part L . R. C.Moore (ed). Geological Society of America and Univ of Kansas press. Ptychitidae-Paleodb classification ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ceratitida Superfamilies
Ceratitida is an order that contains almost all Ammonoidea, ammonoid cephalopod genera from the Triassic as well as ancestral forms from the Upper Permian, the exception being the Phylloceratina, phylloceratids which gave rise to the great diversity of post-Triassic Ammonitida, ammonites. Ceratitids overwhelmingly produced planospirally coiled discoidal shells that may be evolute with inner whorls exposed or involute with only the outer whorl showing. In a few later forms the shell became subglobular, in others, trochoidal or uncoiled. Sutures are typically ceratitic, with smooth saddles and serrate or digitized lobes. In a few the sutures are goniatitic while in others they are ammonitic. Taxonomy * Ceratitida **Ceratitoidea **Choristoceratoidea **Clydonitoidea **Danubitoidea **Dinaritoidea **Lobitoidea **Meekoceratoidea **Megaphyllitoidea **Nathorstitoidea **Noritoidea **Otoceratoidea **Pinacoceratoidea **Ptychitoidea **Sageceratoidea **Tropitoidea **Xenodiscoidea On ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Triassic
The Triassic ( ; sometimes symbolized 🝈) is a geologic period and system which spans 50.5 million years from the end of the Permian Period 251.902 million years ago ( Mya), to the beginning of the Jurassic Period 201.4 Mya. The Triassic is the first and shortest period of the Mesozoic Era and the seventh period of the Phanerozoic Eon. Both the start and end of the period are marked by major extinction events. The Triassic Period is subdivided into three epochs: Early Triassic, Middle Triassic and Late Triassic. The Triassic began in the wake of the Permian–Triassic extinction event, which left the Earth's biosphere impoverished; it was well into the middle of the Triassic before life recovered its former diversity. Three categories of organisms can be distinguished in the Triassic record: survivors from the extinction event, new groups that flourished briefly, and other new groups that went on to dominate the Mesozoic Era. Reptiles, especially archosaurs, were the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Treatise On Invertebrate Paleontology
The ''Treatise on Invertebrate Paleontology,'' published from 1953–2007 by the Geological Society of America and the University of Kansas, then 2009–present by the University of Kansas Paleontological Institute, is a definitive multi-authored work of currently 55 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, when needed, previously published vol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pinacocerataceae
Pinacoceratoidea, formerly Pinacocerataceae, are generally smooth, compressed, evolute to involute ammonoids from the Triassic, belonging to the Ceratitida, in which the suture is ammonitic, with adventitious and auxiliary elements. As presently conceived, the Pinacoceratoidea, named by Mojsisovics, 1879, combines six families; the: * Pinacoceratidae * Carnitidae * Gymnitidae * Isculitidae * Klamathitidae * Sagenitidae In ''Treatise on Invertebrate Paleontology'', Part L, the superfamily included only the Pinacoceratidae and Gymnitidae. Of the families more newly included in the Pinacocerataceae, the Carnitidae was removed from the Ceratitaceae and the Isculitidae from the Ptychitaceae. ''Klamathites'' was removed from the Carnitidae as type for the Klamathitidae. The Sagenitidae is based on the subfamily Sagenitinae of the tropitacean family Haloritidae The Haloritidae is a family of subglobular, involute, Triassic Ammonoidea, ammonoids belonging to the ceratitid superfamily T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Danubitaceae
The Danubitoidea is a large and diverse superfamily in the order Ceratitida of the Ammonoidea that combines five families removed from the Ceratitaceae, Clydonitaceae, and Ptychitaceae. Taxonomy Superfamily Danubitoidea * Family Aplococeratidae * Family Danubitidae * Family Lecanitidae * Family Longobarditidae * Family Nannitidae The largest family in the Danubitoidea is the Longobarditidae with 11 genera distributed among three subfamilies plus three of undetermined placement. Smallest families are the Lecanitidae and Nannitidae, each represented by a single genus. Distribution and range Fossils of the Danubitoidea have been found in the Triassic of Afghanistan, Russia, China, Papua New Guinea; Italy, Switzerland, Hungary; British Columbia, Yukon, Nunavut; Idaho, Nevada, and California. References *Classification of E. T. Tozer 1981E. T. Tozer. 1981. Triassic Ammonoidea: Classification, evolution and relationship with Permian and Jurassic Forms. The Ammonoidea: The evol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
