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Tlatolophus
''Tlatolophus'' (meaning "word crest") is a genus of hadrosaurid dinosaur belonging to the tribe Parasaurolophini. The only species is the type species, ''Tlatolophus galorum''. Discovery and naming The holotype, specimen CIC/P/147, was first discovered as a semi-articulated tail in 2005 in sediments of the Cerro del Pueblo Formation in Coahuila, Mexico. In 2013, the Mexican National Institute of Anthropology and History and the National Autonomous University of Mexico launched a joint project to recover it. It was soon realized that it belonged to the most complete lambeosaurine known from Mexico with an almost complete skull, jaws, and additional parts of the postcranial skeleton including an articulated tail. It was named as the new genus and species ''Tlatolophus galorum'' in 2021. The generic name comes from the Náhuatl word tlatolli, meaning "word", combined with Greek ''lophos'' ("crest") due to the crest's resemblance to the glyph "word" in Aztec iconography, resemb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tlatolophus Size Comparison
''Tlatolophus'' (meaning "word crest") is a genus of hadrosaurid dinosaur belonging to the tribe Parasaurolophini. The only species is the type species, ''Tlatolophus galorum''. Discovery and naming The holotype, specimen CIC/P/147, was first discovered as a semi-articulated tail in 2005 in sediments of the Cerro del Pueblo Formation in Coahuila, Mexico. In 2013, the Mexican National Institute of Anthropology and History and the National Autonomous University of Mexico launched a joint project to recover it. It was soon realized that it belonged to the most complete lambeosaurine known from Mexico with an almost complete skull, jaws, and additional parts of the postcranial skeleton including an articulated tail. It was named as the new genus and species ''Tlatolophus galorum'' in 2021. The generic name comes from the Náhuatl word tlatolli, meaning "word", combined with Greek ''lophos'' ("crest") due to the crest's resemblance to the glyph "word" in Aztec iconography, re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cerro Del Pueblo Formation
The Cerro del Pueblo Formation is a geological Formation (geology), formation in Coahuila, Mexico whose strata date back to the Late Cretaceous. Dinosaur remains are among the fossils that have been recovered from the formation.Weishampel et al., 2004, pp.574-588 The formation is believed to correlate with the ''Baculites reesidei, Baculites reesidesi'' and ''Baculites jenseni'' ammonite zones, which dates it to 73.63-72.74 Ma. Dinosaurs Ornithischians Remains of the following ornithischians have been found in the formation: Ankylosaurs Ceratopsians Ornithopods Thescelosaurids Saurischians Remains of the following saurischians have been found in the formation: Theropods Other Fossils Pterosaurs Turtles Other vertebrates ;Fish * ''Lepisosteus, Lepisosteus sp.'' * Amiidae, Amiidae indet. ;Fossil eggs * ''Porituberoolithus, Porituberoolithus sp.'' * ''Spheroolithus, Spheroolithus sp.'' * ''Prismatoolithus, ?Prismatoolithus sp.'' ;Mammals * Multit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2021 In Archosaur Paleontology
This article records new taxa of fossil archosaurs of every kind that are scheduled binomial nomenclature, described during the year 2021, as well as other significant discoveries and events related to paleontology of archosaurs that are scheduled to occur in the year 2021. General research * A study on the relationship between full potential joint mobility and the poses used during locomotion in extant American alligator and helmeted guineafowl, evaluating its implications for reconstructions of locomotion of extinct archosaurs, is published by Manafzadeh, Kambic & Gatesy (2021). * A study on the Femur, femoral shape variation and on the relationship between femoral morphology and locomotor habits in early archosaurs and non-archosaur Archosauriformes, archosauriforms is published by Pintore ''et al.'' (2021). * A study estimating moment arms for major Pelvis, pelvic limb muscles in extant and fossil archosaurs, aiming to investigate the idea that bird-line archosaurs switched fr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parasaurolophini
Parasaurolophini is a tribe of derived corythosaurian lambeosaurine hadrosaurids that are native to Asia, and North America. It is defined as everything closer to ''Parasaurolophus walkeri'' than to ''Lambeosaurus lambei''. It currently contains '' Adelolophus'' (from Utah), possibly '' Angulomastacator'' (from Texas), ''Charonosaurus'' (from China), ''Parasaurolophus'' (from Utah, New Mexico, China and Alberta) and ''Tlatolophus'' (from Mexico). See also * Timeline of hadrosaur research A timeline is a display of a list of events in chronological order. It is typically a graphic design showing a long bar labelled with dates paralleling it, and usually contemporaneous events. Timelines can use any suitable scale represent ... References Lambeosaurines {{ornithopod-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hadrosaurid
Hadrosaurids (), or duck-billed dinosaurs, are members of the ornithischian family Hadrosauridae. This group is known as the duck-billed dinosaurs for the flat duck-bill appearance of the bones in their snouts. The ornithopod family, which includes genera such as ''Edmontosaurus'' and '' Parasaurolophus'', was a common group of herbivores during the Late Cretaceous Period. Hadrosaurids are descendants of the Upper Jurassic/Lower Cretaceous iguanodontian dinosaurs and had a similar body layout. Hadrosaurs were among the most dominant herbivores during the Late Cretaceous in Asia and North America, and during the close of the Cretaceous several lineages dispersed into Europe, Africa, South America and Antarctica. Like other ornithischians, hadrosaurids had a predentary bone and a pubic bone which was positioned backwards in the pelvis. Unlike more primitive iguanodonts, the teeth of hadrosaurids are stacked into complex structures known as dental batteries, which acted as effectiv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Surangular
The suprangular or surangular is a jaw bone found in most land vertebrates, except mammals. Usually in the back of the jaw, on the upper edge, it is connected to all other jaw bones: dentary, angular, splenial and articular The articular bone is part of the lower jaw of most vertebrates, including most jawed fish, amphibians, birds and various kinds of reptiles, as well as ancestral mammals. Anatomy In most vertebrates, the articular bone is connected to two oth .... It is often a muscle attachment site. References Vertebrate anatomy {{Vertebrate anatomy-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glyph
A glyph () is any kind of purposeful mark. In typography, a glyph is "the specific shape, design, or representation of a character". It is a particular graphical representation, in a particular typeface, of an element of written language. A grapheme, or part of a grapheme (such as a diacritic), or sometimes several graphemes in combination (a composed glyph) can be represented by a glyph. Glyphs, graphemes and characters In most languages written in any variety of the Latin alphabet except English, the use of diacritics to signify a sound mutation is common. For example, the grapheme requires two glyphs: the basic and the grave accent . In general, a diacritic is regarded as a glyph, even if it is contiguous with the rest of the character like a cedilla in French, Catalan or Portuguese, the ogonek in several languages, or the stroke on a Polish " Ł". Although these marks originally had no independent meaning, they have since acquired meaning in the field of mathematic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aztec
The Aztecs () were a Mesoamerican culture that flourished in central Mexico in the post-classic period from 1300 to 1521. The Aztec people included different Indigenous peoples of Mexico, ethnic groups of central Mexico, particularly those groups who spoke the Nahuatl, Nahuatl language and who dominated large parts of Mesoamerica from the 14th to the 16th centuries. Aztec culture was organized into city-states (''altepetl''), some of which joined to form alliances, political confederations, or empires. The Aztec Empire was a confederation of three city-states established in 1427: Tenochtitlan, city-state of the Mexica or Tenochca; Texcoco (altepetl), Texcoco; and Tlacopan, previously part of the Tepanec empire, whose dominant power was Azcapotzalco (altepetl), Azcapotzalco. Although the term Aztecs is often narrowly restricted to the Mexica of Tenochtitlan, it is also broadly used to refer to Nahuas, Nahua polities or peoples of central Pre-Columbian Mexico, Mexico in the preh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cretaceous Research
''Cretaceous Research'' is a bimonthly peer-reviewed scientific journal published by Elsevier. The journal focuses on topics dealing with the Cretaceous period and the Cretaceous–Paleogene boundary. Abstracting and indexing The journal is abstracted and indexed in Scopus and the Web of Science. According to the ''Journal Citation Reports'', the journal has a 2020 impact factor The impact factor (IF) or journal impact factor (JIF) of an academic journal is a scientometric index calculated by Clarivate that reflects the yearly mean number of citations of articles published in the last two years in a given journal, as i ... of 2.176. References External links * Elsevier academic journals Paleontology journals Publications established in 1980 English-language journals Bimonthly journals {{Cretaceous-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Late Cretaceous
The Late Cretaceous (100.5–66 Ma) is the younger of two epochs into which the Cretaceous Period is divided in the geologic time scale. Rock strata from this epoch form the Upper Cretaceous Series. The Cretaceous is named after ''creta'', the Latin word for the white limestone known as chalk. The chalk of northern France and the white cliffs of south-eastern England date from the Cretaceous Period. Climate During the Late Cretaceous, the climate was warmer than present, although throughout the period a cooling trend is evident. The tropics became restricted to equatorial regions and northern latitudes experienced markedly more seasonal climatic conditions. Geography Due to plate tectonics, the Americas were gradually moving westward, causing the Atlantic Ocean to expand. The Western Interior Seaway divided North America into eastern and western halves; Appalachia and Laramidia. India maintained a northward course towards Asia. In the Southern Hemisphere, Australia and Ant ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quadrate Bone
The quadrate bone is a skull bone in most tetrapods, including amphibians, sauropsids (reptiles, birds), and early synapsids. In most tetrapods, the quadrate bone connects to the quadratojugal and squamosal bones in the skull, and forms upper part of the jaw joint. The lower jaw articulates at the articular bone, located at the rear end of the lower jaw. The quadrate bone forms the lower jaw articulation in all classes except mammals. Evolutionarily, it is derived from the hindmost part of the primitive cartilaginous upper jaw. Function in reptiles In certain extinct reptiles, the variation and stability of the morphology of the quadrate bone has helped paleontologists in the species-level taxonomy and identification of mosasaur squamates and spinosaurine dinosaurs. In some lizards and dinosaurs, the quadrate is articulated at both ends and movable. In snakes, the quadrate bone has become elongated and very mobile, and contributes greatly to their ability to swallow very ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Premaxilla
The premaxilla (or praemaxilla) is one of a pair of small cranial bones at the very tip of the upper jaw of many animals, usually, but not always, bearing teeth. In humans, they are fused with the maxilla. The "premaxilla" of therian mammal has been usually termed as the incisive bone. Other terms used for this structure include premaxillary bone or ''os premaxillare'', intermaxillary bone or ''os intermaxillare'', and Goethe's bone. Human anatomy In human anatomy, the premaxilla is referred to as the incisive bone (') and is the part of the maxilla which bears the incisor teeth, and encompasses the anterior nasal spine and alar region. In the nasal cavity, the premaxillary element projects higher than the maxillary element behind. The palatal portion of the premaxilla is a bony plate with a generally transverse orientation. The incisive foramen is bound anteriorly and laterally by the premaxilla and posteriorly by the palatine process of the maxilla. It is formed from the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
