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Besanosaurus
''Besanosaurus'' (meaning "Besano [Lombardy, N. Italy] lizard") is a genus of large ichthyosaur (a marine reptile, not a dinosaur) that lived during the middle Triassic period, approximately 235 million years ago. This marine reptile came from its own family Besanosauridae and was named by Cristiano Dal Sasso, Dal Sasso and Pinna in 1996. The type of species is ''Besanosaurus leptorhynchus'' meaning "long-beaked reptile from Besano." Discovery The bones of ''Besanosaurus'' were first discovered in "Sasso Caldo" quarry in the spring of 1993 by the volunteers of the paleontological group of Besano, a small town in the Lombardy region of north Italy. The fossil was almost completely embedded in the rock and could be first seen only through x-rays; to detect the content of the 38 slabs of stone enclosing the skeleton, 145 radiographs were necessary. The skeleton of ''Besanosaurus'' came to light in the paleontological laboratory of Museo Civico di Storia Naturale di Milano ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Besanosaurus Leptorhynchus - Skull
''Besanosaurus'' (meaning "Besano ombardy, N. Italy">Italy.html" ;"title="ombardy, N. Italy">ombardy, N. Italylizard") is a genus of large ichthyosaur (a marine reptile, not a dinosaur) that lived during the middle Triassic period, approximately 235 million years ago. This marine reptile came from its own family Besanosauridae and was named by Dal Sasso and Pinna in 1996. The type of species is ''Besanosaurus leptorhynchus'' meaning "long-beaked reptile from Besano." Discovery The bones of ''Besanosaurus'' were first discovered in "Sasso Caldo" quarry in the spring of 1993 by the volunteers of the paleontological group of Besano, a small town in the Lombardy region of north Italy. The fossil was almost completely embedded in the rock and could be first seen only through x-rays; to detect the content of the 38 slabs of stone enclosing the skeleton, 145 radiographs were necessary. The skeleton of ''Besanosaurus'' came to light in the paleontological laboratory of Museo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Besanosaurus Skull Reconstruction
''Besanosaurus'' (meaning "Besano ombardy, N. Italy">Italy.html" ;"title="ombardy, N. Italy">ombardy, N. Italylizard") is a genus of large ichthyosaur (a marine reptile, not a dinosaur) that lived during the middle Triassic period, approximately 235 million years ago. This marine reptile came from its own family Besanosauridae and was named by Dal Sasso and Pinna in 1996. The type of species is ''Besanosaurus leptorhynchus'' meaning "long-beaked reptile from Besano." Discovery The bones of ''Besanosaurus'' were first discovered in "Sasso Caldo" quarry in the spring of 1993 by the volunteers of the paleontological group of Besano, a small town in the Lombardy region of north Italy. The fossil was almost completely embedded in the rock and could be first seen only through x-rays; to detect the content of the 38 slabs of stone enclosing the skeleton, 145 radiographs were necessary. The skeleton of ''Besanosaurus'' came to light in the paleontological laboratory of Museo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cristiano Dal Sasso
Cristiano Dal Sasso (born 12 September 1965) is an Italian paleontologist. Biography He was born in Monza, Italy and has been working since 1991 for the Milan Natural History Museum where he is the curator of fossil reptiles and birds. He was the technical coordinator of the excavations of Besano, which brought to light the complete skeleton of a Middle Triassic marine reptile of the order of Ichthyosaurs, the ''Besanosaurus'' with embryos in the belly, published in 1996 along with Giovanni Pinna. He studied ''Scipionyx'', the first dinosaur found in Italy at Pietraroja, whose description appeared in Nature in 1998. This small theropod dinosaur, nicknamed "Ciro", generated much publicity because of the unique preservation of large areas of petrified soft tissue and internal organs such as muscles and intestines. The fossil shows many details of these, even the internal structure of some muscle and bone cells. Cristiano Dal Sasso also described ''Saltriovenator'', considered as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ichthyosauria
Ichthyosaurs (Ancient Greek for "fish lizard" – and ) are large extinct marine reptiles. Ichthyosaurs belong to the order known as Ichthyosauria or Ichthyopterygia ('fish flippers' – a designation introduced by Sir Richard Owen in 1842, although the term is now used more for the parent clade of the Ichthyosauria). Ichthyosaurs thrived during much of the Mesozoic era; based on fossil evidence, they first appeared around 250 million years ago ( Ma) and at least one species survived until about 90 million years ago, into the Late Cretaceous. During the Early Triassic epoch, ichthyosaurs and other ichthyosauromorphs evolved from a group of unidentified land reptiles that returned to the sea, in a development similar to how the mammalian land-dwelling ancestors of modern-day dolphins and whales returned to the sea millions of years later, which they gradually came to resemble in a case of convergent evolution. Ichthyosaurs were particularly abundant in the Late Triassic a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ichthyosaur
Ichthyosaurs (Ancient Greek for "fish lizard" – and ) are large extinct marine reptiles. Ichthyosaurs belong to the order known as Ichthyosauria or Ichthyopterygia ('fish flippers' – a designation introduced by Sir Richard Owen in 1842, although the term is now used more for the parent clade of the Ichthyosauria). Ichthyosaurs thrived during much of the Mesozoic era; based on fossil evidence, they first appeared around 250 million years ago ( Ma) and at least one species survived until about 90 million years ago, into the Late Cretaceous. During the Early Triassic epoch, ichthyosaurs and other ichthyosauromorphs evolved from a group of unidentified land reptiles that returned to the sea, in a development similar to how the mammalian land-dwelling ancestors of modern-day dolphins and whales returned to the sea millions of years later, which they gradually came to resemble in a case of convergent evolution. Ichthyosaurs were particularly abundant in the Late Triassic a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mikadocephalus Gracilirostris
''Mikadocephalus'' is an extinct genus of ichthyosaur. Its remains have been found in Europe, in the Anisian of Switzerland. The type species is ''Mikadocephalus gracilirostris''. In 2021, Bindellini and colleagues considered ''M. gracilirostris'' to be a junior synonym of '' Besanosaurus leptorhynchus''. See also * List of ichthyosaurs * Timeline of ichthyosaur research This timeline of ichthyosaur research is a chronological listing of events in the history of paleontology focused on the ichthyosauromorphs, a group of secondarily aquatic marine reptiles whose later members superficially resembled dolphins, shar ... References Ichthyosaurs of Europe Triassic ichthyosaurs Triassic reptiles of Europe Anisian life Ichthyosauromorph genera {{triassic-reptile-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Besano
Besano is a town and ''comune'' located in the province of Varese, in the Lombardy region of northern Italy. Paleontological site The fossils of Besano In 1993 the fossil of a Triassic aquatic reptile dating back to about 235 million years was found near the town. It was named ''Besanosaurus''. Many other fossils have emerged from the fossiliferous A fossil (from Classical Latin , ) is any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserved in ... field of Besano-Monte San Giorgio, known and appreciated since the mid-nineteenth century. References Cities and towns in Lombardy {{Varese-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stereo Microscope
The stereo, stereoscopic or dissecting microscope is an optical microscope variant designed for low magnification observation of a sample, typically using light reflected from the surface of an object rather than transmitted through it. The instrument uses two separate optical paths with two objectives and eyepieces to provide slightly different viewing angles to the left and right eyes. This arrangement produces a three-dimensional visualization of the sample being examined."Introduction to Stereomicroscopy" by Paul E. Nothnagle, William Chambers, and , '' |
Mixosaurus
''Mixosaurus'' is an extinct genus of Middle Triassic (Anisian to Ladinian, about 250-240 Mya) ichthyosaur. Its fossils have been found near the Italy–Switzerland border and in South China. The genus was named in 1887 by George H. Baur. The name means "Mixed Lizard", and was chosen because it appears to have been a transitional form between the eel-shaped ichthyosaurs such as ''Cymbospondylus'' and the later dolphin-shaped ichthyosaurs, such as ''Ichthyosaurus''. Baur named ''Mixosaurus'' as a new genus because its forefin was sufficiently different from that of ''Ichthyosaurus''. ''Mixosaurus'' includes 3 species. Previously this number was bigger, and ''Mixosaurus'' was considered as the most common genus of Triassic ichthyosaurs, whose fossils have been found all over the world, including China, Timor, Indonesia, Italy, Spitsbergen, Svalbard, Canada, as well as Alaska and Nevada in the US. Description ''Mixosaurus'' was a small ichthyosaur, measuring between long and w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gavials
The gharial (''Gavialis gangeticus''), also known as gavial or fish-eating crocodile, is a crocodilian in the family Gavialidae and among the longest of all living crocodilians. Mature females are long, and males . Adult males have a distinct boss at the end of the snout, which resembles an earthenware pot known as a ''ghara'', hence the name "gharial". The gharial is well adapted to catching fish because of its long, narrow snout and 110 sharp, interlocking teeth. The gharial probably evolved in the northern Indian subcontinent. Fossil gharial remains were excavated in Pliocene deposits in the Sivalik Hills and the Narmada River valley. It currently inhabits rivers in the plains of the northern part of the Indian subcontinent. It is the most thoroughly aquatic crocodilian, and leaves the water only for basking and building nests on moist sandbanks. Adults mate at the end of the cold season. Females congregate in spring to dig nests, in which they lay 20–95 eggs. They guard t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radiograph
Radiography is an imaging technique using X-rays, gamma rays, or similar ionizing radiation and non-ionizing radiation to view the internal form of an object. Applications of radiography include medical radiography ("diagnostic" and "therapeutic") and industrial radiography. Similar techniques are used in airport security (where "body scanners" generally use backscatter X-ray). To create an image in conventional radiography, a beam of X-rays is produced by an X-ray generator and is projected toward the object. A certain amount of the X-rays or other radiation is absorbed by the object, dependent on the object's density and structural composition. The X-rays that pass through the object are captured behind the object by a detector (either photographic film or a digital detector). The generation of flat two dimensional images by this technique is called projectional radiography. In computed tomography (CT scanning) an X-ray source and its associated detectors rotate around the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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