|
Adratiklit
''Adratiklit'' (meaning "mountain lizard") is an extinct genus of herbivorous stegosaurian Dinosaurs, dinosaur that lived on the supercontinent Gondwana during the Middle Jurassic period (168–164 million years ago). The genus contains a single species, ''Adratiklit boulahfa''. Its remains were found in the El Mers III Formation (Bathonian–?Callovian), near Boulahfa, south of Boulemane, Fès-Meknès, north Morocco. Eurypodan dinosaurs, in particular stegosaurs, were diverse and abundant in Laurasia (nowadays the northern continents) during the Jurassic, but their remains are extremely rare in deposits of Gondwana, (nowadays the southern continents). Nevertheless, the existence of fragmentary remains and trackways in the deposits of Gondwana indicate the presence of eurypodan taxa there. ''Adratiklit'' is the first described eurypodan taxon from North Africa, as well as—along with ''Thyreosaurus''—one of the oldest known stegosaurs (being similar in age to ''Bashanosaurus'', ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Adratiklit Boulahfa
''Adratiklit'' (meaning "mountain lizard") is an extinct genus of herbivorous stegosaurian dinosaur that lived on the supercontinent Gondwana during the Middle Jurassic period (168–164 million years ago). The genus contains a single species, ''Adratiklit boulahfa''. Its remains were found in the El Mers III Formation (Bathonian–?Callovian), near Boulahfa, south of Boulemane, Fès-Meknès, north Morocco. Eurypodan dinosaurs, in particular stegosaurs, were diverse and abundant in Laurasia (nowadays the northern continents) during the Jurassic, but their remains are extremely rare in deposits of Gondwana, (nowadays the southern continents). Nevertheless, the existence of fragmentary remains and trackways in the deposits of Gondwana indicate the presence of eurypodan taxa there. ''Adratiklit'' is the first described eurypodan taxon from North Africa, as well as—along with '' Thyreosaurus''—one of the oldest known stegosaurs (being similar in age to ''Bashanosaurus'', '' Isa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bashanosaurus
''Bashanosaurus'' (meaning "Bashan lizard") is an extinct genus of stegosaurian dinosaur from the Middle Jurassic (Bathonian age) Shaximiao Formation of Yunyang County, China. The genus contains a single species, ''Bashanosaurus primitivus'', known from incomplete skeletons belonging to three individuals. It is one of the basalmost stegosaurs, as well as one of the oldest known stegosaurs, along with ''Adratiklit'', '' Isaberrysaura'', and '' Thyreosaurus''. Discovery and naming In 2016, a quarry of dinosaur fossils representing outcrops of the lower Shaximiao Formation was found in Laojun Village of Pu’an Township in Yunyang County, Chongqing Municipality, China. The ''Bashanosaurus'' fossil material was among the bones found in the outcrops, consisting of three specimens collected from the same horizon. The holotype specimen, CLGPR V00006-1, includes one dorsal and two caudal vertebrae, the right scapulocoracoid, a partial left hindlimb (femur, tibia, fibula, and a m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
El Mers III Formation
The El Mers Group is a Group (geology), geological group in the Middle Atlas of Morocco. It is subdivided into three formations named the El Mers I, II, and III Formations, respectively. It is a marine deposit primarily consisting of marl, with gypsum present in the upper part of unit 3. It is the lateral equivalent of the terrestrial Guettioua Sandstone. Dinosaur remains are among the fossils that have been recovered from the group, most notably those of sauropods and the unusual thyreophorans ''Adratiklit'', ''Thyreosaurus'', and ''Spicomellus''. This formation records a series of coastal to shallow marine settings of Middle Jurassic (with an age of Bajocian-Bathonian for El Mers 1 and a Bathonian-Callovian? for El Mers II-III), based on detailed stratigraphical biomarkers such as ammonites or Foranimifera. Paleoenvironment The El Mers formations are composed primarily of marls with intermittent layers of limestone and sandstone, characterized by abundant organic matter and Be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thyreosaurus
''Thyreosaurus'' is an extinct genus of stegosaurian dinosaur from the Middle Jurassic El Mers III Formation of Morocco. The genus contains a single species, ''Thyreosaurus atlasicus'', known form a partial disarticulated partial skeleton consisting of several dorsal vertebrae, ribs, a limb bone, and dermal bones. ''Thyreosaurus'' is characterized by a unique dermal armor with an asymmetrical texture, indicating that it may have been recumbent. Alongside ''Adratiklit'', ''Thyreosaurus'' increases the diversity of unique stegosaurs occurring in the Middle Jurassic of Africa. Discovery and naming The ''Thyreosaurus'' holotype specimen, HIIUC-BN00, was discovered in 2021 in sediments of the El Mers III Formation (El Mers Group, Boulahfa North locality) near Boulemane in the Middle Atlas mountains of Morocco. The specimen—which is associated but disarticulated—consists of nine dorsal vertebrae, 21 fragmentary ribs, a limb bone tentatively described as a fibula, and six ost ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stegosauria
Stegosauria is a group of Herbivore, herbivorous ornithischian dinosaurs that lived during the Jurassic and early Cretaceous Period (geology), periods. Stegosaurian fossils have been found mostly in the Northern Hemisphere (North America, Europe and Asia), Africa and South America. Their geographical origins are unclear; the earliest unequivocal stegosaurian, ''Bashanosaurus primitivus'', was found in the Bathonian Shaximiao Formation of China. Stegosaurians were armored dinosaurs (thyreophorans). Originally, they did not differ much from more primitive members of that group, being small, low-slung, running animals protected by armored scutes. An early evolutionary innovation was the development of spikes as defensive weapons. Later species, belonging to a subgroup called the Stegosauridae, became larger, and developed long hindlimbs that no longer allowed them to run. This increased the importance of active defence by the thagomizer, which could ward off even large predators becau ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Isaberrysaura
''Isaberrysaura'' is an extinct genus of stegosaurian ornithischian dinosaurs from the Middle Jurassic Los Molles Formation of Patagonia, Argentina. The genus contains a single species, ''I. mollensis'', described by Salgado in 2017 based on a single specimen. Although initially classified as a basal neornithischian, subsequent analyses have allied it with the Stegosauria as the morphology of its skull resembles those of other members of the group. Discovery The ''Isaberrysaura'' holotype specimen, MOZ-Pv 6459, was discovered in the marine to deltaic sediments of the Los Molles Formation, which is of Bajocian age, by Isabel Valdivia Berry, who is honoured in the generic name. The specimen consists of a partial skeleton (the postcranial material of which is still unprepared) with a nearly complete skull , six cervical vertebrae, fifteen dorsal vertebrae, a sacrum with a partial ilium and apparently complete pubis, nine caudal vertebrae, part of a scapula, ribs, and othe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Berber Language
The Berber languages, also known as the Amazigh languages or Tamazight, are a branch of the Afroasiatic language family. They comprise a group of closely related but mostly mutually unintelligible languages spoken by Berber communities, who are indigenous to North Africa.Hayward, Richard J., chapter ''Afroasiatic'' in Heine, Bernd & Nurse, Derek, editors, ''African Languages: An Introduction'' Cambridge 2000. . The languages are primarily spoken and not typically written. Historically, they have been written with the ancient Libyco-Berber script, which now exists in the form of Tifinagh. Today, they may also be written in the Berber Latin alphabet or the Arabic script, with Latin being the most pervasive. The Berber languages have a similar level of variety to the Romance languages, although they are sometimes referred to as a single collective language, often as "Berber", "Tamazight", or "Amazigh". The languages, with a few exceptions, form a dialect continuum. There is a d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genus
Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In binomial nomenclature, the genus name forms the first part of the binomial species name for each species within the genus. :E.g. ''Panthera leo'' (lion) and ''Panthera onca'' (jaguar) are two species within the genus ''Panthera''. ''Panthera'' is a genus within the family Felidae. The composition of a genus is determined by taxonomy (biology), taxonomists. The standards for genus classification are not strictly codified, so different authorities often produce different classifications for genera. There are some general practices used, however, including the idea that a newly defined genus should fulfill these three criteria to be descriptively useful: # monophyly – all descendants of an ancestral taxon are grouped together (i.e. Phylogeneti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Natural History Museum, London
The Natural History Museum in London is a museum that exhibits a vast range of specimens from various segments of natural history. It is one of three major museums on Exhibition Road in South Kensington, the others being the Science Museum (London), Science Museum and the Victoria and Albert Museum. The Natural History Museum's main frontage, however, is on Cromwell Road. The museum is home to life and earth science specimens comprising some 80 million items within five main collections: botany, entomology, mineralogy, palaeontology and zoology. The museum is a centre of research specialising in Taxonomy (biology), taxonomy, identification and conservation. Given the age of the institution, many of the collections have great historical as well as scientific value, such as specimens collected by Charles Darwin. The museum is particularly famous for its exhibition of dinosaur skeletons and ornate architecture—sometimes dubbed a ''cathedral of nature''—both exemplified by the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Holotype
A holotype (Latin: ''holotypus'') is a single physical example (or illustration) of an organism used when the species (or lower-ranked taxon) was formally described. It is either the single such physical example (or illustration) or one of several examples, but explicitly designated as the holotype. Under the International Code of Zoological Nomenclature (ICZN), a holotype is one of several kinds of name-bearing types. In the International Code of Nomenclature for algae, fungi, and plants (ICN) and ICZN, the definitions of types are similar in intent but not identical in terminology or underlying concept. For example, the holotype for the butterfly '' Plebejus idas longinus'' is a preserved specimen of that subspecies, held by the Museum of Comparative Zoology at Harvard University. In botany and mycology, an isotype is a duplicate of the holotype, generally pieces from the same individual plant or samples from the same genetic individual. A holotype is not necessarily "ty ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
