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Oardasaurus
''Oardasaurus'' (meaning "Oarda de Jos lizard") is an extinct genus of lizard from the latest Cretaceous of Romania. It is a member of the Barbatteiidae, a group of lizards closely related to the Teiidae. At in length, it was much smaller than the only other named member of the Barbatteiidae, '' Barbatteius'', which lived slightly later. Like ''Barbatteius'', ''Oardasaurus'' can be identified by the presence of a crust of bone deposits, or osteoderms, on the roof of its skull; it differs from ''Barbatteius'' in the pattern of the sculpturing on this crust. Both ''Oardasaurus'' and ''Barbatteius'' lived in the isolated island ecosystem of Hațeg Island, having rapidly diversified into various generalist predators of small prey after their arrival on the island during the Early Cretaceous. They went extinct in the Cretaceous–Paleogene extinction event. Description ''Oardasaurus'' is a small lizard, measuring roughly long. It is smaller than its close relative '' Barbatteius'', ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maastrichtian
The Maastrichtian () is, in the ICS geologic timescale, the latest age (uppermost stage) of the Late Cretaceous Epoch or Upper Cretaceous Series, the Cretaceous Period or System, and of the Mesozoic Era or Erathem. It spanned the interval from . The Maastrichtian was preceded by the Campanian and succeeded by the Danian (part of the Paleogene and Paleocene). The Cretaceous–Paleogene extinction event (formerly known as the Cretaceous–Tertiary extinction event) occurred at the end of this age. In this mass extinction, many commonly recognized groups such as non-avian dinosaurs, plesiosaurs and mosasaurs, as well as many other lesser-known groups, died out. The cause of the extinction is most commonly linked to an asteroid about wide colliding with Earth, ending the Cretaceous. Stratigraphic definitions Definition The Maastrichtian was introduced into scientific literature by Belgian geologist André Hubert Dumont in 1849, after studying rock strata of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anatomical Terms Of Muscle
Anatomical terminology is used to uniquely describe aspects of skeletal muscle, cardiac muscle, and smooth muscle such as their actions, structure, size, and location. Types There are three types of muscle tissue in the body: skeletal, smooth, and cardiac. Skeletal muscle Skeletal muscle, or "voluntary muscle", is a striated muscle tissue that primarily joins to bone with tendons. Skeletal muscle enables movement of bones, and maintains posture. The widest part of a muscle that pulls on the tendons is known as the belly. Muscle slip A muscle slip is a slip of muscle that can either be an anatomical variant, or a branching of a muscle as in rib connections of the serratus anterior muscle. Smooth muscle Smooth muscle is involuntary and found in parts of the body where it conveys action without conscious intent. The majority of this type of muscle tissue is found in the digestive and urinary systems where it acts by propelling forward food, chyme, and feces in the former and ur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Silt
Silt is granular material of a size between sand and clay and composed mostly of broken grains of quartz. Silt may occur as a soil (often mixed with sand or clay) or as sediment mixed in suspension with water. Silt usually has a floury feel when dry, and lacks plasticity when wet. Silt also can be felt by the tongue as granular when placed on the front teeth (even when mixed with clay particles). Silt is a common material, making up 45% of average modern mud. It is found in many river deltas and as wind-deposited accumulations, particularly in central Asia, north China, and North America. It is produced in both very hot climates (through such processes as collisions of quartz grains in dust storms) and very cold climates (through such processes as glacial grinding of quartz grains.) Loess is soil rich in silt which makes up some of the most fertile agricultural land on Earth. However, silt is very vulnerable to erosion, and it has poor mechanical properties, making construc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Șard Formation
Sard is a dark reddish-brown variety of the mineral chalcedony, similar to carnelian. Sard may also refer to: * Sard's lemma, a result in mathematical analysis, named after mathematician Arthur Sard * Anything from, or related to the Mediterranean island of Sardinia **Sardinians, a people hailing from the aforementioned island ** Sardinian, a language spoken on Sardinia **Sardinian literature **Sardinian music **Sardinian history **Sardinian (sheep) * Sardis, the capital city of the ancient kingdom of Lydia * Sard, Khuzestan, a village in Khuzestan Province, Iran * Sard, Lorestan, a village in Lorestan Province, Iran * Sard, a planet in the Gradius video game series Şard may refer to: *Şard ( hu, Sard), a village in Ighiu Commune, Alba County, Romania * Șoarș, a commune in Braşov County, Romania * Şardu, a village in Cluj County, Romania * Şapartoc, a village in Mureș County, Romania * Şardu Nirajului, a village in Mureș County, Romania * Şoard, a village in Mureș C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sebeș (river)
The Sebeș ( hu, Sebes, german: Mühlbach) is a left tributary of the river Mureș in Transylvania, Romania. The upper reach of the river (upstream of Lake Oașa) is also known as ''Frumoasa''.Sebes / Frumoasa (jud. Sibiu) e-calauza.ro The Romanian and Hungarian name ''Sebeș'' and ''Sebes'' originate from the Hungarian adjective ''sebes'' meaning ''"speedy"'', while the German name means ''Mill Creek''. The source of the river is on the south slope of the , in the southwestern part of Sibiu County. It flows through the reservoirs [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alba Iulia
Alba Iulia (; german: Karlsburg or ''Carlsburg'', formerly ''Weißenburg''; hu, Gyulafehérvár; la, Apulum) is a city that serves as the seat of Alba County in the west-central part of Romania. Located on the Mureș River in the historical region of Transylvania, it has a population of 63,536 (). During ancient times, the site was the location of the Roman camp Apulum. Since the High Middle Ages, the city has been the seat of Transylvania's Roman Catholic diocese. Between 1542 and 1690 it was the capital of the principality of Transylvania. At one point it also was a center of the Eastern Orthodox Metropolitan of Transylvania with suffragan to Vad diocese.Maksym Mayorov. Metropolitan of Kiev and other Eastern Orthodox Churches before 1686 (Київська митрополія та інші православні церкви перед 1686 роком ) Likbez. 16 December 2018 On 1 December 1918, the Union of Transylvania with Romania was declared in Alba Iulia, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Transylvania
Transylvania ( ro, Ardeal or ; hu, Erdély; german: Siebenbürgen) is a historical and cultural region in Central Europe, encompassing central Romania. To the east and south its natural border is the Carpathian Mountains, and to the west the Apuseni Mountains. Broader definitions of Transylvania also include the western and northwestern Romanian regions of Crișana and Maramureș, and occasionally Banat. Transylvania is known for the scenery of its Carpathian landscape and its rich history. It also contains Romania's second-largest city, Cluj-Napoca, and other iconic cities and towns such as Brașov, Sibiu, Târgu Mureș, Alba Iulia and Sighișoara. It is also the home of some of Romania's UNESCO World Heritage Sites such as the Villages with fortified churches, the Historic Centre of Sighișoara, the Dacian Fortresses of the Orăștie Mountains and the Roșia Montană Mining Cultural Landscape. It was under the rule of the Agathyrsi, part of the Dacian Kingd ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Suture (anatomy)
In anatomy, a suture is a fairly rigid joint between two or more hard elements of an organism, with or without significant overlap of the elements. Sutures are found in the skeletons or exoskeletons of a wide range of animals, in both invertebrates and vertebrates. Sutures are found in animals with hard parts from the Cambrian period to the present day. Sutures were and are formed by several different methods, and they exist between hard parts that are made from several different materials. Vertebrate skeletons The skeletons of vertebrate animals (fish, amphibians, reptiles, birds, and mammals) are made of bone, in which the main rigid ingredient is calcium phosphate. Cranial sutures The skulls of most vertebrates consist of sets of bony plates held together by cranial sutures. These sutures are held together mainly by Sharpey's fibers which grow from each bone into the adjoining one. Sutures in the ankles of land vertebrates In the type of crurotarsal ankle which is fou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frontal Bone
The frontal bone is a bone in the human skull. The bone consists of two portions.'' Gray's Anatomy'' (1918) These are the vertically oriented squamous part, and the horizontally oriented orbital part, making up the bony part of the forehead, part of the bony orbital cavity holding the eye, and part of the bony part of the nose respectively. The name comes from the Latin word ''frons'' (meaning " forehead"). Structure of the frontal bone The frontal bone is made up of two main parts. These are the squamous part, and the orbital part. The squamous part marks the vertical, flat, and also the biggest part, and the main region of the forehead. The orbital part is the horizontal and second biggest region of the frontal bone. It enters into the formation of the roofs of the orbital and nasal cavities. Sometimes a third part is included as the nasal part of the frontal bone, and sometimes this is included with the squamous part. The nasal part is between the brow ridges, and ends ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Transitional Fossil
A transitional fossil is any fossilized remains of a life form that exhibits traits common to both an ancestral group and its derived descendant group. This is especially important where the descendant group is sharply differentiated by gross anatomy and mode of living from the ancestral group. These fossils serve as a reminder that taxonomic divisions are human constructs that have been imposed in hindsight on a continuum of variation. Because of the incompleteness of the fossil record, there is usually no way to know exactly how close a transitional fossil is to the point of divergence. Therefore, it cannot be assumed that transitional fossils are direct ancestors of more recent groups, though they are frequently used as models for such ancestors. In 1859, when Charles Darwin's ''On the Origin of Species'' was first published, the fossil record was poorly known. Darwin described the perceived lack of transitional fossils as "the most obvious and gravest objection which can be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lacertidae
The Lacertidae are the family of the wall lizards, true lizards, or sometimes simply lacertas, which are native to Afro-Eurasia. It is a diverse family with at least 300 species in 39 genera. They represent the dominant group of reptiles found in Europe. The group includes the genus ''Lacerta'', which contains some of the most commonly seen lizard (thus "true" lizard) species in Europe. Habitat The European and Mediterranean species of lacertids live mainly in forest and scrub habitats. ''Eremias'' and ''Ophisops'' species replace these in the grassland and desert habitats of Asia. African species usually live in rocky, arid areas. ''Holaspis'' species are among the few arboreal lacertids, and its two species, ''Holaspis guentheri'' and ''Holaspis laevis'', are gliders (although apparently poor ones), using their broad tail and flattened body as an aerofoil. Description Lacertids are small or medium-sized lizards. Most species are less than 9 cm long, excluding the tail, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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