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Tiourarén Formation
The Tiourarén Formation is a geological Formation (geology), formation in the Agadez Region of Niger whose strata were originally thought to be Early Cretaceous. However, re-interpretation of the sediments showed that they are probably Middle Jurassic (Bathonian) in age.Rauhut and Lopez-Arbarello (2009). "Considerations on the age of the Tiouaren Formation (Iullemmeden Basin, Niger, Africa): Implications for Gondwanan Mesozoic terrestrial vertebrate faunas." ''Palaeogeography, Palaeoclimatology, Palaeoecology'', 271: 259-267.Tuiguidit foreland at Fossilworks.org It is the uppermost unit of the Irhazer Group. Dinosaur remains are among the fossils that have been recovered from the formation.Weishampel, David B; et al. (2004). "Dinosaur distribution (Early Cretac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geological Formation
A geological formation, or simply formation, is a body of rock having a consistent set of physical characteristics ( lithology) that distinguishes it from adjacent bodies of rock, and which occupies a particular position in the layers of rock exposed in a geographical region (the stratigraphic column). It is the fundamental unit of lithostratigraphy, the study of strata or rock layers. A formation must be large enough that it can be mapped at the surface or traced in the subsurface. Formations are otherwise not defined by the thickness of their rock strata, which can vary widely. They are usually, but not universally, tabular in form. They may consist of a single lithology (rock type), or of alternating beds of two or more lithologies, or even a heterogeneous mixture of lithologies, so long as this distinguishes them from adjacent bodies of rock. The concept of a geologic formation goes back to the beginnings of modern scientific geology. The term was used by Abraham Gottlob Wer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fossilworks
Fossilworks is a portal which provides query, download, and analysis tools to facilitate access to the Paleobiology Database The Paleobiology Database is an online resource for information on the distribution and classification of fossil animals, plants, and microorganisms. History The Paleobiology Database (PBDB) originated in the NCEAS-funded Phanerozoic Marine Pale ..., a large relational database assembled by hundreds of paleontologists from around the world. History Fossilworks was created in 1998 by John Alroy and is housed at Macquarie University. It includes many analysis and data visualization tools formerly included in the Paleobiology Database.{{cite web, title=Frequently asked questions, url=http://www.fossilworks.org/cgi-bin/bridge.pl?page=FAQ, publisher=Fossilworks, access-date=17 December 2021 References {{Reflist External links {{Wikidata property, P842 * [Baidu] |
List Of Dinosaur-bearing Rock Formations
This list of dinosaur-bearing rock formations is a list of geologic formations in which dinosaur fossils have been documented. Containing body fossils * List of stratigraphic units with dinosaur body fossils ** List of stratigraphic units with few dinosaur genera ** List of stratigraphic units with indeterminate dinosaur fossils Containing trace fossils * List of stratigraphic units with dinosaur trace fossils ** List of stratigraphic units with dinosaur tracks *** List of stratigraphic units with ornithischian tracks *** List of stratigraphic units with sauropodomorph tracks *** List of stratigraphic units with theropod tracks See also * Lists of fossiliferous stratigraphic units * List of fossil sites * Mesozoic The Mesozoic Era ( ), also called the Age of Reptiles, the Age of Conifers, and colloquially as the Age of the Dinosaurs is the second-to-last era of Earth's geological history, lasting from about , comprising the Triassic, Jurassic and Cretaceo ... {{DEFAULTSOR ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thyreophora
Thyreophora ("shield bearers", often known simply as "armored dinosaurs") is a group of armored ornithischian dinosaurs that lived from the Early Jurassic until the end of the Cretaceous. Thyreophorans are characterized by the presence of body armor lined up in longitudinal rows along the body. Primitive forms had simple, low, keeled scutes or osteoderms, whereas more derived forms developed more elaborate structures including spikes and plates. Most thyreophorans were herbivorous and had relatively small brains for their body size. Thyreophora includes various subgroups, including the suborders Ankylosauria and Stegosauria. In both the suborders, the forelimbs were much shorter than the hindlimbs, particularly in stegosaurs. The clade has been defined as the group consisting of all species more closely related to ''Ankylosaurus'' than to ''Triceratops''. Thyreophora is the sister group of Cerapoda within Genasauria. Groups of thyreophorans Basal thyreophorans Basal thyreop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spinostropheus NT
''Spinostropheus'' is a genus of carnivorous ceratosaurian theropod dinosaur that lived in the Middle Jurassic period and has been found in the Tiouraren Formation, Niger. The type and only species is ''S. gautieri''. History of discovery In 1959, Albert-Félix de Lapparent excavated fossils near Oued Timmersöi, west of In Tedreft in the Agadez desert. Among the finds were the remains of a theropod. In 1960, de Lapparent, based on these, named a second species of the genus ''Elaphrosaurus'', ''E. gautieri''. The specific name honours François Gautier, the discoverer of the type locality. In 2004, Paul Sereno, John Wilson and John Conrad named a separate genus: ''Spinostropheus''. The generic name is derived from Latin ''spina'', "spine", and Greek στροφεύς, ''stropheus'', "vertebra", and refers to the epipophyseal processes of the cervical vertebrae, which are prominent and dorso-ventrally flattened. The holotype, MNHN 1961-28, was found in a layer of the Ti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spinostropheus
''Spinostropheus'' is a genus of carnivorous ceratosaurian theropod dinosaur that lived in the Middle Jurassic period and has been found in the Tiouraren Formation, Niger. The type species, type and only species is ''S. gautieri''. History of discovery In 1959, Albert-Félix de Lapparent excavated fossils near Oued Timmersöi, west of In Tedreft in the Agadez desert. Among the finds were the remains of a theropod. In 1960, de Lapparent, based on these, named a second species of the genus ''Elaphrosaurus'', ''E. gautieri''. The specific name (zoology), specific name honours François Gautier, the discoverer of the type locality. In 2004, Paul Sereno, John Wilson (paleontologist), John Wilson and John Conrad named a separate genus: ''Spinostropheus''. The generic name is derived from Latin ''spina'', "spine", and Greek στροφεύς, ''stropheus'', "vertebra", and refers to the epipophyseal processes of the cervical vertebrae, which are prominent and dorso-ventrally flattened ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rebbachisaurus
''Rebbachisaurus'' (meaning "Khebbash, Aït Rebbach lizard") is a genus of sauropod dinosaur of the superfamily Diplodocoidea, that lived during the Late Cretaceous period in Africa and possibly also South America about 99-97 million years ago. Remains attributed to ''Rebbachisaurus'' have been found in Morocco, Niger, Algeria, Tunisia and possibly also Argentina (if ''Rayososaurus'' is the same animal as ''Rebbachisaurus''), although only the Moroccan remains can be referred to the genus without doubt. The discovery of ''Rayososaurus'', a South American sauropod nearly identical to ''Rebbachisaurus'' which may have actually have been the same animal as ''Rebbachisaurus'', supports the theory that there was still a land connection between Africa and South America during the Early Cretaceous, long after it was commonly thought the two continents had separated.Bonaparte, J. (1996). "Cretaceous tetrapods of Argentina". ''Münchner Geowissenschaften Abhandlungen'' 30: 73-130. History ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jobaria Tiguidensis Steveoc
''Jobaria'' is a genus of sauropod dinosaur that lived in what is now Niger during the middle Jurassic Period, between 164 and 161 million years ago. ''Jobaria'' is currently the only known valid sauropod from the Tiouraren, where it was discovered in 1997. Description ''Jobaria'' was a primitive sauropod, about long and estimated to weigh about . In 2016 Gregory S. Paul gave a lower estimation of and . Its backbone and tail were simple compared to the complex vertebrae and whiplash tail of the later North America sauropods ''Diplodocus'' and ''Apatosaurus''. It may also have been able to rear up on its hind legs as Paul Sereno concluded, after comparing the ratios of humerus and femur circumferences in ''Jobaria'' to extant elephants. The weight distribution of ''Jobaria'' indicates that it was supported by the rear limbs rather than the forelimbs (as in elephants) and is speculated that as elephants can rear up, then ''Jobaria'' would have been able to more easily. The hea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jobaria
''Jobaria'' is a genus of sauropod dinosaur that lived in what is now Niger during the middle Jurassic Period, between 164 and 161 million years ago. ''Jobaria'' is currently the only known valid sauropod from the Tiouraren, where it was discovered in 1997. Description ''Jobaria'' was a primitive sauropod, about long and estimated to weigh about . In 2016 Gregory S. Paul gave a lower estimation of and . Its backbone and tail were simple compared to the complex vertebrae and whiplash tail of the later North America sauropods ''Diplodocus'' and ''Apatosaurus''. It may also have been able to rear up on its hind legs as Paul Sereno concluded, after comparing the ratios of humerus and femur circumferences in ''Jobaria'' to extant elephants. The weight distribution of ''Jobaria'' indicates that it was supported by the rear limbs rather than the forelimbs (as in elephants) and is speculated that as elephants can rear up, then ''Jobaria'' would have been able to more easily. The h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Afrovenator Reconstruction
''Afrovenator'' (; "African hunter") is a genus of megalosaurid theropod dinosaur from the Middle Jurassic Period of northern Africa. Discovery and naming The remains of ''Afrovenator'' were discovered in 1993 in the Tiourarén Formation of the department of Agadez in Niger. The Tiourarén was originally thought to represent the Hauterivian to Barremian stages of the early Cretaceous Period, or approximately 132 to 125 million years ago (Sereno et al. 1994). However, re-interpretation of the sediments showed that they are probably Mid-Jurassic in age, dating ''Afrovenator'' to the Bathonian to Oxfordian stages, between 167 and 161 mya. The sauropod ''Jobaria'', whose remains were first mentioned in the same paper which named ''Afrovenator'', is also known from this formation. ''Afrovenator'' is known from a single relatively complete skeleton, holotype UC OBA 1, featuring most of the skull minus its top (likewise the mandible, or lower jaws, are lacking apart from the pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Afrovenator
''Afrovenator'' (; "African hunter") is a genus of megalosaurid theropod dinosaur from the Middle Jurassic Period of northern Africa. Discovery and naming The remains of ''Afrovenator'' were discovered in 1993 in the Tiourarén Formation of the department of Agadez in Niger. The Tiourarén was originally thought to represent the Hauterivian to Barremian stages of the early Cretaceous Period, or approximately 132 to 125 million years ago (Sereno et al. 1994). However, re-interpretation of the sediments showed that they are probably Mid-Jurassic in age, dating ''Afrovenator'' to the Bathonian to Oxfordian stages, between 167 and 161 mya. The sauropod '' Jobaria'', whose remains were first mentioned in the same paper which named ''Afrovenator'', is also known from this formation. ''Afrovenator'' is known from a single relatively complete skeleton, holotype UC OBA 1, featuring most of the skull minus its top (likewise the mandible, or lower jaws, are lacking apart from the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dinosaur
Dinosaurs are a diverse group of reptiles of the clade Dinosauria. They first appeared during the Triassic period, between 243 and 233.23 million years ago (mya), although the exact origin and timing of the evolution of dinosaurs is the subject of active research. They became the dominant terrestrial vertebrates after the Triassic–Jurassic extinction event 201.3 mya; their dominance continued throughout the Jurassic and Cretaceous periods. The fossil record shows that birds are feathered dinosaurs, having evolved from earlier theropods during the Late Jurassic epoch, and are the only dinosaur lineage known to have survived the Cretaceous–Paleogene extinction event approximately 66 mya. Dinosaurs can therefore be divided into avian dinosaurs—birds—and the extinct non-avian dinosaurs, which are all dinosaurs other than birds. Dinosaurs are varied from taxonomic, morphological and ecological standpoints. Birds, at over 10,700 living species, are among ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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