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Berthasaura
''Berthasaura'' (meaning "Bertha's lizard") is a genus of noasaurid ceratosaurian theropod dinosaur from the Cretaceous Goio-Erê Formation of Paraná, Brazil. The type and only species is ''Berthasaura leopoldinae''. Discovery and naming Between 2011 and 2015, paleontologists working at the Cemitério dos Pterossauros site near Cruzeiro do Oeste discovered the skeletons of the pterosaurs ''Caiuajara'' and ''Keresdrakon'' as well as remains of small theropods. One of these was in 2019 named and described as ''Vespersaurus'' but a second species proved to be present. In 2021, the type species ''Berthasaura leopoldinae'' was named and described by Geovane Alves de Souza, Marina Bento Soares, Luiz Carlos Weinschütz, Everton Wilner, Ricardo Tadeu Lopes, Olga Maria Oliveira de Araújo and Alexander Wilhelm Armin Kellner. The generic name ''Berthasaura'' refers to the scientist and women's rights activist Bertha Maria Júlia Lutz, while the specific name honors Maria Leopoldina, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Goio-Erê Formation
The Goio-Erê Formation is a geological formation in Brazil. It is sometimes thought to be deposited between the Turonian and Campanian stages of the Late Cretaceous, but an Aptian-Albian date has also been proposed. It primarily consists of sandstone and was deposited in a desert environment. It is known for its exceptional 3-D preservation of fossils, which include those of the pterosaurs ''Keresdrakon'' and ''Caiuajara'', the dinosaur ''Berthasaura'' as well as the iguanian lizard ''Gueragama ''Gueragama'' is an extinct genus of iguanian lizard from the Late Cretaceous of Brazil. It belongs to a group of iguanians called Acrodonta, whose living members include chameleons and agamids and are currently restricted to the Old World. ' ....'' It is laterally equivalent to the Rio Paraná Formation. References Geologic formations of Brazil Upper Cretaceous Series of South America Cretaceous Brazil Campanian Stage Coniacian Stage Santonian Stage Turonian Stage San ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Noasaurid
Noasauridae is an extinct family of theropod dinosaurs belonging to the group Ceratosauria. They were closely related to the short-armed abelisaurids, although most noasaurids had much more traditional body types generally similar to other theropods. Their heads, on the other hand, had unusual adaptations depending on the subfamily. 'Traditional' noasaurids, sometimes grouped in the subfamily Noasaurinae, had sharp teeth which splayed outwards from a downturned lower jaw. The most complete and well-known example of these kinds of noasaurids was '' Masiakasaurus knopfleri'' from Madagascar. Another group, Elaphrosaurinae, has also been placed within Noasauridae by some studies. Elaphrosaurines developed toothless jaws and herbivorous diets, at least as adults. The most complete and well known elaphrosaurine was '' Limusaurus inextricabilis''. At least some noasaurids had pneumatised cervical vertebrae.Arthur Souza Brum, Elaine Batista Machado, Diogenes de Almeida Campos & Ale ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Noasauridae
Noasauridae is an extinct family of theropod dinosaurs belonging to the group Ceratosauria. They were closely related to the short-armed abelisaurids, although most noasaurids had much more traditional body types generally similar to other theropods. Their heads, on the other hand, had unusual adaptations depending on the subfamily. 'Traditional' noasaurids, sometimes grouped in the subfamily Noasaurinae, had sharp teeth which splayed outwards from a downturned lower jaw. The most complete and well-known example of these kinds of noasaurids was ''Masiakasaurus knopfleri'' from Madagascar. Another group, Elaphrosaurinae, has also been placed within Noasauridae by some studies. Elaphrosaurines developed toothless jaws and herbivorous diets, at least as adults. The most complete and well known elaphrosaurine was ''Limusaurus inextricabilis''. At least some noasaurids had pneumatised cervical vertebrae.Arthur Souza Brum, Elaine Batista Machado, Diogenes de Almeida Campos & Alexa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Early Cretaceous
The Early Cretaceous ( geochronological name) or the Lower Cretaceous (chronostratigraphic name), is the earlier or lower of the two major divisions of the Cretaceous. It is usually considered to stretch from 145 Ma to 100.5 Ma. Geology Proposals for the exact age of the Barremian-Aptian boundary ranged from 126 to 117 Ma until recently (as of 2019), but based on drillholes in Svalbard the defining early Aptian Oceanic Anoxic Event 1a (OAE1a) was carbon isotope dated to 123.1±0.3 Ma, limiting the possible range for the boundary to c. 122–121 Ma. There is a possible link between this anoxic event and a series of Early Cretaceous large igneous provinces (LIP). The Ontong Java-Manihiki-Hikurangi large igneous province, emplaced in the South Pacific at c. 120 Ma, is by far the largest LIP in Earth's history. The Ontong Java Plateau today covers an area of 1,860,000 km2. In the Indian Ocean another LIP began to form at c. 120 Ma, the Kerguelen P ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Museum Of Brazil
The National Museum of Brazil ( pt, Museu Nacional) is the oldest scientific institution of Brazil. It is located in the city of Rio de Janeiro, where it is installed in the Paço de São Cristóvão (Saint Christopher's Palace), which is inside the Quinta da Boa Vista. The main building was originally the residence of the Portuguese royal family between 1808 and 1821 and was later used to house the Brazilian imperial family between 1822 and 1889. After the monarchy was deposed, it hosted the Republican Constituent Assembly from 1889 to 1891 before being assigned to the use of the museum in 1892. The building was listed as Brazilian National Heritage in 1938 and was largely destroyed by a fire in 2018. Founded by King João VI of Portugal, Brazil and the Algarves on 6 June 1818, under the name of "Royal Museum", the institution was initially housed at the Campo de Santana park, where it exhibited the collections incorporated from the former House of Natural History, popula ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Deltadromeus
''Deltadromeus'' (meaning "delta runner") is a genus of theropod dinosaur from Northern Africa. It had long, unusually slender hind limbs for its size, suggesting that it was a swift runner. The skull is not known. One fossil specimen of a single species (''D. agilis'', or "agile delta runner") has been described, found in the Kem Kem Beds, which date to the mid-Cretaceous Period (mid-Cenomanian age), about 95 million years ago. It may be a junior synonym of the contemporary ''Bahariasaurus''.Holtz, Thomas R. Jr. (2008) ''Dinosaurs: The Most Complete, Up-to-Date Encyclopedia for Dinosaur Lovers of All Ages'Supplementary Information/ref> The classification of ''Deltadromeus'' has been in flux since its original description. In 2016, a South American theropod known as ''Gualicho shinyae'' was found to possess many similarities with ''Deltadromeus''. Depending on the phylogenetic position of ''Gualicho'', ''Deltadromeus'' may have been a neovenatorid carnosaur, a tyrannosauroid, or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Abelisauridae
Abelisauridae (meaning "Abel's lizards") is a family (or clade) of ceratosaurian theropod dinosaurs. Abelisaurids thrived during the Cretaceous period, on the ancient southern supercontinent of Gondwana, and today their fossil remains are found on the modern continents of Africa and South America, as well as on the Indian subcontinent and the island of Madagascar. Isolated teeth were found in the Late Jurassic of Portugal, and the Late Cretaceous genera '' Tarascosaurus'' and ''Arcovenator'' have been described in France. Abelisaurids first appear in the fossil record of the early middle Jurassic period, and at least two genera (the Moroccan ''Chenanisaurus'' and the Madagascan ''Majungasaurus'') survived until the end of the Mesozoic era 66 million years ago. Like most theropods, abelisaurids were carnivorous bipeds. They were characterized by stocky hind limbs and extensive ornamentation of the skull bones, with grooves and pits. In many abelisaurids, such as ''Carnotaurus'', ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ceratosaurus
''Ceratosaurus'' (from Ancient Greek, Greek κέρας/κέρατος, ' meaning "horn" and wikt:σαῦρος, σαῦρος ' meaning "lizard") was a carnivorous Theropoda, theropod dinosaur in the Late Jurassic Period (geology), period (Kimmeridgian to Tithonian). The genus (biology), genus was first described in 1884 by American paleontologist Othniel Charles Marsh based on a nearly complete skeleton discovered in Garden Park, Colorado, in rocks belonging to the Morrison Formation. The type species is ''Ceratosaurus nasicornis''. The Garden Park specimen remains the most complete skeleton known from the genus, and only a handful of additional specimens have been described since. Two additional species, ''Ceratosaurus dentisulcatus'' and ''Ceratosaurus magnicornis'', were described in 2000 from two fragmentary skeletons from the Cleveland-Lloyd Dinosaur Quarry, Cleveland-Lloyd Quarry of Utah and from the vicinity of Fruita, Colorado. The Valid name (zoology), validity of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genyodectes
''Genyodectes'' ("jaw bite", from the Ancient Greek, Greek words ''genys'' ("jaw") and ''dektes'' ("bite")) is a genus of ceratosaurian theropod dinosaur from the Lower Cretaceous (Aptian) of South America. The holotype material (MLP 26–39, Museo de La Plata, La Plata, Argentina) was collected from the Cerro Barcino Formation, Cañadón Grande, Departamento Paso de Indios in the Chubut Province of Argentina and consists of an incomplete snout, including the premaxillae, portions of both maxillas, the right and left dentary, many teeth, a fragment of the left splenial, and parts of the supradentaries. These elements are generally poorly preserved and some are in articulation. The premaxilla of ''Genyodectes'' possesses relatively large and protruding teeth, similar to those of ''Ceratosaurus''. The specific name, ''serus'', means "late". In 2016 it was estimated to be 6.25 meters in length and 790 kg in weight. Taxonomy and phylogeny The taxon has long been considered a nome ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ceratosauridae
Ceratosauridae is an extinct family of theropod dinosaurs belonging to the infraorder Ceratosauria. The family's type genus, ''Ceratosaurus'', was first found in Jurassic rocks from North America. Ceratosauridae is made up of the genera ''Ceratosaurus'', found in North America, Tanzania, and Portugal, and ''Genyodectes'', from the Early Cretaceous of Argentina. Unnamed probable ceratosaurids are known from limited material in the Middle Jurassic of Madagascar, the Late Jurassic of Switzerland, the Late Jurassic of Tanzania, and the Late Jurassic or possibly Early Cretaceous of Uruguay. Classification Othniel Charles Marsh named the family Ceratosauridae in 1884 to contain the type species, ''Ceratosaurus nasicornis''. Since then, a number of other species have been referred to this family, mainly from the genus ''Ceratosaurus''. Currently recognized ceratosaurid species include ''Genyodectes serus'' and possibly ''Eoabelisaurus mefi,'' ''C. stechowi'' and ''Ostafrikasaurus'' are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Berberosaurus
''Berberosaurus'' (meaning " Berber lizard", in reference to the Berbers of Morocco) is a genus of neotheropod dinosaur, possibly a ceratosaur, from the Early Toarcian-age (Lower Jurassic) Azilal Formation found in the High Atlas of Toundoute, Ouarzazate, Morocco. The type species of the genus ''Berberosaurus'' is ''B. liassicus'', in reference to the Lias epoch. ''Berberosaurus'' might be the oldest known ceratosaur, and is based on partial postcranial remains. Classification Ronan Allain and colleagues, who described ''Berberosaurus'', performed a phylogenetic analysis and found their new genus to be the most basal known abelisauroid, more derived than ''Elaphrosaurus'', ''Ceratosaurus'', and ''Spinostropheus'', but less so than ''Xenotarsosaurus'' and abelisaurians. ''Berberosaurus'' is distinguished from other theropods by anatomical details found in its vertebrae, metacarpals, and hindlimb bones. Its assignment as an abelisauroid pushes back the record of this group and sho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ceratosauria
Ceratosaurs are members of the clade Ceratosauria, a group of dinosaurs defined as all theropods sharing a more recent common ancestor with ''Ceratosaurus'' than with birds. The oldest known ceratosaur, ''Saltriovenator'', dates to the earliest part of the Jurassic, around 199 million years ago. According to the majority of the latest research, Ceratosauria includes three major clades: Ceratosauridae, Noasauridae, and Abelisauridae, found primarily (though not exclusively) in the Southern Hemisphere. Originally, Ceratosauria included the above dinosaurs plus the Late Triassic to Early Jurassic Coelophysoidea and Dilophosauridae, implying a much earlier divergence of ceratosaurs from other theropods. However, most recent studies have shown that coelophysoids and dilophosaurids do not form a natural group with other ceratosaurs, and are excluded from this group. Ceratosauria derives its names from the type species, ''Ceratosaurus nasicornis'', described by O.C. Marsh in 1884. A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
