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Blochius
''Blochius'' is an extinct genus of prehistoric fish from the Eocene. It is the only genus of the family Blochiidae. It was described by Giovanni Serafino Volta (1764-1842) in 1800. Description ''Blochius'' was about 60 cm long and had a very slender elongated body, a narrow head with elongated upper and lower jaws and large eyes. Species * ''Blochius longirostris ''Blochius longirostris'' is a species of prehistoric fish belonging to the family Blochiidae. This fish lived in the middle Eocene The Eocene ( ) Epoch is a geological epoch that lasted from about 56 to 33.9 million years ago (mya). It is ...'' Volta, 1796 * '' Blochius macropterus'' de Zigno, 1887 * '' Blochius moorheadi'' Eastman, 1911 ( nomen dubium) References''Blochius'' Paleobiology Database * Harry L. Fierstine: ''Fossil History of Billfishes (Xiphioidei).'' Bulletin of Marine Science, Volume 79, Issue 3, Januar 2006, Seiten 433-45Abstract * Karl Albert Frickhinger: ''Fossilien Atlas Fische'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blochius Moorheadi
''Blochius'' is an extinct genus of prehistoric fish from the Eocene. It is the only genus of the family Blochiidae. It was described by Giovanni Serafino Volta (1764-1842) in 1800. Description ''Blochius'' was about 60 cm long and had a very slender elongated body, a narrow head with elongated upper and lower jaws and large eyes. Species * ''Blochius longirostris'' Volta, 1796 * ''Blochius macropterus ''Blochius'' is an extinct genus of prehistoric fish from the Eocene. It is the only genus of the family Blochiidae. It was described by Giovanni Serafino Volta (1764-1842) in 1800. Description ''Blochius'' was about 60 cm long and had a ve ...'' de Zigno, 1887 * '' Blochius moorheadi'' Eastman, 1911 ( nomen dubium) References''Blochius'' Paleobiology Database * Harry L. Fierstine: ''Fossil History of Billfishes (Xiphioidei).'' Bulletin of Marine Science, Volume 79, Issue 3, Januar 2006, Seiten 433-45Abstract * Karl Albert Frickhinger: ''Fossilien Atlas Fische'', ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blochius Macropterus
''Blochius'' is an extinct genus of prehistoric fish from the Eocene. It is the only genus of the family Blochiidae. It was described by Giovanni Serafino Volta (1764-1842) in 1800. Description ''Blochius'' was about 60 cm long and had a very slender elongated body, a narrow head with elongated upper and lower jaws and large eyes. Species * ''Blochius longirostris ''Blochius longirostris'' is a species of prehistoric fish belonging to the family Blochiidae. This fish lived in the middle Eocene The Eocene ( ) Epoch is a geological epoch that lasted from about 56 to 33.9 million years ago (mya). It is ...'' Volta, 1796 * '' Blochius macropterus'' de Zigno, 1887 * '' Blochius moorheadi'' Eastman, 1911 ( nomen dubium) References''Blochius'' Paleobiology Database * Harry L. Fierstine: ''Fossil History of Billfishes (Xiphioidei).'' Bulletin of Marine Science, Volume 79, Issue 3, Januar 2006, Seiten 433-45Abstract * Karl Albert Frickhinger: ''Fossilien Atlas Fische'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blochius Longirostris
''Blochius longirostris'' is a species of prehistoric fish belonging to the family Blochiidae. This fish lived in the middle Eocene The Eocene ( ) Epoch is a geological epoch that lasted from about 56 to 33.9 million years ago (mya). It is the second epoch of the Paleogene Period in the modern Cenozoic Era. The name ''Eocene'' comes from the Ancient Greek (''ēṓs'', " ... (about 50 million years ago) and its fossils have been found exclusively in the well-known Monte Bolca (Italy). Description ''Blochius longirostris'' was similar to a swordfish. It could reach a length of about and had a very slender elongated body, a narrow head with elongated upper and lower jaws and large eyes. Bibliography * G. S. Volta, ''Ittiolitologia Veronese del museo Bozziano ora annesso a quello del conte Giovambattista Gazola e di altri gabinetti fossili veronesi con la versione latina'', Stamperia Guiliari, Verona, 1796–1808, 323 pp. * C. R. Eastman, ''Catalog of fishes in the Carne ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acanthomorpha
Acanthomorpha (meaning "thorn-shaped") is an extraordinarily diverse taxon of teleost fishes with spiny rays. The clade contains about one third of the world's modern species of vertebrates: over 14,000 species. A key anatomical innovation in acanthomorphs is hollow and unsegmented spines at the anterior edge of the dorsal and anal fins. A fish can extend these sharp bony spines to protect itself from predators, but can also retract them to decrease drag when swimming. Another shared feature is a particular rostral cartilage, associated with ligaments attached to the rostrum and premaxilla, that enables the fish to protrude its jaws considerably to catch food. Rosen coined the name in 1973 to describe a clade comprising Acanthopterygii, Paracanthopterygii, and also ctenothrissiform fossils from the Cretaceous Period, such as ''Aulolepis'' and ''Ctenothrissa''. Those fossils share several details of the skeleton, and especially of the skull, with modern acanthomorphs. Orig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Giovanni Serafino Volta
Giovanni Serafino Volta (1764–1842) was an Italian priest, naturalist, and palaeontologist, best known for his studies of fossil fish from Monte Bolca. Volta was an ''Abate'' (or abbot) and theologian. He was a Canon of the Imperial Basilica in Mantua and the curator of the natural history department at the University of Pavia. He wrote ''Ittiolitologia Veronese del Museo Bozziano ora annesso a quello del Conte Giovambattista Gazola e di altri gabinetti di fossili Veronesi con la versione Latina'', published at Verona between 1796 and 1809. Illustrated with 76 fine plates this is the first treatise on fossil ichthyology in Italy and describes 123 species of fossil fish from the fossil site of Monte Bolca. With Louis Agassiz he also wrote ''Revue critique des poissons fossiles figurés dans l'Ittiolitologia veronesé'' (Neuchatel, 1835). Most other widely known works include: *''Elementi di Mineralogia Analitica e Sistematica '' Manimi, 1787 *''Prospetto Del Museo Bellis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Animalia
Animals are multicellular, eukaryotic organisms in the biological kingdom Animalia. With few exceptions, animals consume organic material, breathe oxygen, are able to move, can reproduce sexually, and go through an ontogenetic stage in which their body consists of a hollow sphere of cells, the blastula, during embryonic development. Over 1.5 million living animal species have been described—of which around 1 million are insects—but it has been estimated there are over 7 million animal species in total. Animals range in length from to . They have complex interactions with each other and their environments, forming intricate food webs. The scientific study of animals is known as zoology. Most living animal species are in Bilateria, a clade whose members have a bilaterally symmetric body plan. The Bilateria include the protostomes, containing animals such as nematodes, arthropods, flatworms, annelids and molluscs, and the deuterostomes, containing the echinoderms ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chordata
A chordate () is an animal of the phylum Chordata (). All chordates possess, at some point during their larval or adult stages, five synapomorphies, or primary physical characteristics, that distinguish them from all the other taxa. These five synapomorphies include a notochord, dorsal hollow nerve cord, endostyle or thyroid, pharyngeal slits, and a post-anal tail. The name “chordate” comes from the first of these synapomorphies, the notochord, which plays a significant role in chordate structure and movement. Chordates are also bilaterally symmetric, have a coelom, possess a circulatory system, and exhibit metameric segmentation. In addition to the morphological characteristics used to define chordates, analysis of genome sequences has identified two conserved signature indels (CSIs) in their proteins: cyclophilin-like protein and mitochondrial inner membrane protease ATP23, which are exclusively shared by all vertebrates, tunicates and cephalochordates. These CS ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Actinopterygii
Actinopterygii (; ), members of which are known as ray-finned fishes, is a class of bony fish. They comprise over 50% of living vertebrate species. The ray-finned fishes are so called because their fins are webs of skin supported by bony or horny spines (rays), as opposed to the fleshy, lobed fins that characterize the class Sarcopterygii (lobe-finned fish). These actinopterygian fin rays attach directly to the proximal or basal skeletal elements, the radials, which represent the link or connection between these fins and the internal skeleton (e.g., pelvic and pectoral girdles). By species count, actinopterygians dominate the vertebrates, and they constitute nearly 99% of the over 30,000 species of fish. They are ubiquitous throughout freshwater and marine environments from the deep sea to the highest mountain streams. Extant species can range in size from ''Paedocypris'', at , to the massive ocean sunfish, at , and the long-bodied oarfish, at . The vast majority of Actinop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fish
Fish are aquatic, craniate, gill-bearing animals that lack limbs with digits. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish as well as various extinct related groups. Approximately 95% of living fish species are ray-finned fish, belonging to the class Actinopterygii, with around 99% of those being teleosts. The earliest organisms that can be classified as fish were soft-bodied chordates that first appeared during the Cambrian period. Although they lacked a true spine, they possessed notochords which allowed them to be more agile than their invertebrate counterparts. Fish would continue to evolve through the Paleozoic era, diversifying into a wide variety of forms. Many fish of the Paleozoic developed external armor that protected them from predators. The first fish with jaws appeared in the Silurian period, after which many (such as sharks) became formidable marine predators rather than just the prey of arthropods. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nomen Dubium
In binomial nomenclature, a ''nomen dubium'' (Latin for "doubtful name", plural ''nomina dubia'') is a scientific name that is of unknown or doubtful application. Zoology In case of a ''nomen dubium'' it may be impossible to determine whether a specimen belongs to that group or not. This may happen if the original type series (i. e. holotype, isotype, syntype or paratype) is lost or destroyed. The zoological and botanical codes allow for a new type specimen, or neotype, to be chosen in this case. A name may also be considered a ''nomen dubium'' if its name-bearing type is fragmentary or lacking important diagnostic features (this is often the case for species known only as fossils). To preserve stability of names, the ''International Code of Zoological Nomenclature'' allows a new type specimen, or neotype, to be chosen for a ''nomen dubium'' in this case. 75.5. Replacement of unidentifiable name-bearing type by a neotype. When an author considers that the taxonomic identity ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eocene Fish
The Eocene ( ) Epoch is a geological epoch that lasted from about 56 to 33.9 million years ago (mya). It is the second epoch of the Paleogene Period in the modern Cenozoic Era. The name ''Eocene'' comes from the Ancient Greek (''ēṓs'', "dawn") and (''kainós'', "new") and refers to the "dawn" of modern ('new') fauna that appeared during the epoch. The Eocene spans the time from the end of the Paleocene Epoch to the beginning of the Oligocene Epoch. The start of the Eocene is marked by a brief period in which the concentration of the carbon isotope 13C in the atmosphere was exceptionally low in comparison with the more common isotope 12C. The end is set at a major extinction event called the ''Grande Coupure'' (the "Great Break" in continuity) or the Eocene–Oligocene extinction event, which may be related to the impact of one or more large bolides in Siberia and in what is now Chesapeake Bay. As with other geologic periods, the strata that define the start and end of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
