Astroscopus Zephyreus
''Astroscopus'', the electric stargazers, is a genus of stargazers, a type of percomorph fish from the family Uranoscopidae, part of the order Labriformes. The species in this genus are anatomically distinct uranoscopids, being characterized by internal nares and being the only group of marine bony fish having organs which produce electricity which are derived from the extraocular muscles. They are found on the Atlantic and Pacific coasts of the Americas. Species There are four extant and one extinct species included in ''Astroscopus'': * ''Astroscopus guttatus'' Abbott, 1860 - Northern stargazer * '' Astroscopus sexspinosus'' (Steindachner, 1876) - Brazilian Stargazer * '' Astroscopus y-graecum'', (Cuvier, 1829) - Southern stargazer * '' Astroscopus zephyreus'' Gilbert & Starks in Gilbert, 1897 * †'' Astroscopus countermani'' Carnevale, Godfrey & Pietsch, 2011 Extinct species described from the Tortonian deposits of Calvert Cliffs, Maryland Maryland ( ) is a U.S. s ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Late Miocene
The Late Miocene (also known as Upper Miocene) is a sub-epoch of the Miocene epoch (geology), Epoch made up of two faunal stage, stages. The Tortonian and Messinian stages comprise the Late Miocene sub-epoch, which lasted from 11.63 Ma (million years ago) to 5.333 Ma. The evolution of ''Homo'' The gibbons (family Hylobatidae) and orangutans (genus ''Pongo'') were the first groups to split from the line leading to the hominins, including humans, then gorillas (genus ''Gorilla''), and finally chimpanzees and bonobos (genus ''Pan (genus), Pan''). The splitting date between hominin and chimpanzee lineages is placed by some between 4 and 8 million years ago, that is, during the Late Miocene. References External links GeoWhen Database - Late Miocene Miocene, .03 Miocene geochronology, 03 Messinian, * Tortonian, * {{geochronology-stub ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Order (biology)
Order () is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between family and class. In biological classification, the order is a taxonomic rank used in the classification of organisms and recognized by the nomenclature codes. An immediately higher rank, superorder, is sometimes added directly above order, with suborder directly beneath order. An order can also be defined as a group of related families. What does and does not belong to each order is determined by a taxonomist, as is whether a particular order should be recognized at all. Often there is no exact agreement, with different taxonomists each taking a different position. There are no hard rules that a taxonomist needs to follow in describing or recognizing an order. Some taxa are accepted almost universally, while others are recognized only rarely. The name of an order is usually written with a capital letter. For some groups of organisms, their orders may follow consist ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Calvert Cliffs State Park
Calvert Cliffs State Park is a public recreation area in Lusby, Calvert County, Maryland, that protects a portion of the cliffs that extend for 24 miles along the eastern flank of the Calvert Peninsula on the west side of Chesapeake Bay from Chesapeake Beach southward to Drum Point. The state park is known for the abundance of mainly Middle Miocene sub-epoch fossils that can be found on the shoreline. Natural history Geology The park contains the type locality site of the Early to Middle Miocene Calvert Formation. These rocks are the sediment from a coastal ocean that covered the area during that time. The age of the formation is (19-)18–15(-14) million years ago ( Ma), i.e. it extends essentially over the Hemingfordian stage. This formation occurs in Maryland and neighboring Virginia. The cliffs are between high and extend for along the coast. In addition, rocks of the younger Choptank and the St. Marys Formations are exposed here. This makes Calvert Cliffs State Pa ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Tortonian
The Tortonian is in the geologic time scale an age or stage of the late Miocene that spans the time between 11.608 ± 0.005 Ma and 7.246 ± 0.005 Ma (million years ago). It follows the Serravallian and is followed by the Messinian. The Tortonian roughly overlaps with the regional Pannonian Stage of the Paratethys timescale of Central Europe. It also overlaps the upper Astaracian, Vallesian and lower Turolian European land mammal ages, the upper Clarendonian and lower Hemphillian North American land mammal ages and the upper Chasicoan and lower Huayquerian South American land mammal ages. Definition The Tortonian was introduced by Swiss stratigrapher Karl Mayer-Eymar in 1858. It was named after the Italian city of Tortona in the Piedmont region. The base of the Tortonian Stage is at the last common appearance of calcareous nanoplankton '' Discoaster kugleri'' and planktonic foram '' Globigerinoides subquadratus''. It is also associated with the short normal pol ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Astroscopus Countermani
''Astroscopus countermani'' is an extinct species of stargazer described from a cranium found in Tortonian deposits of the Calvert Cliffs of what is now Maryland. ''A. countermani'' is very similar to its living relatives. References † A dagger, obelisk, or obelus is a typographical mark that usually indicates a footnote if an asterisk has already been used. The symbol is also used to indicate death (of people) or extinction (of species or languages). It is one of the mo ... Miocene fish Cenozoic animals of North America Fossil taxa described in 2011 {{Labriformes-stub ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Astroscopus Zephyreus
''Astroscopus'', the electric stargazers, is a genus of stargazers, a type of percomorph fish from the family Uranoscopidae, part of the order Labriformes. The species in this genus are anatomically distinct uranoscopids, being characterized by internal nares and being the only group of marine bony fish having organs which produce electricity which are derived from the extraocular muscles. They are found on the Atlantic and Pacific coasts of the Americas. Species There are four extant and one extinct species included in ''Astroscopus'': * ''Astroscopus guttatus'' Abbott, 1860 - Northern stargazer * '' Astroscopus sexspinosus'' (Steindachner, 1876) - Brazilian Stargazer * '' Astroscopus y-graecum'', (Cuvier, 1829) - Southern stargazer * '' Astroscopus zephyreus'' Gilbert & Starks in Gilbert, 1897 * †'' Astroscopus countermani'' Carnevale, Godfrey & Pietsch, 2011 Extinct species described from the Tortonian deposits of Calvert Cliffs, Maryland Maryland ( ) is a U.S. s ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Astroscopus Sexspinosus
''Astroscopus sexspinosus'', the Brazilian stargazer, is a species of electric stargazer (''Astroscopus'') found off the coast of southern Brazil and northern Argentina Argentina, officially the Argentine Republic, is a country in the southern half of South America. It covers an area of , making it the List of South American countries by area, second-largest country in South America after Brazil, the fourt .... The Brazilian stargazer can be found to depths of 49 feet (15m). References Uranoscopidae Marine fish of Brazil Fish of Argentina Fish described in 1876 {{Labriformes-stub ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Astroscopus Zephyreus 254703040
''Astroscopus'', the electric stargazers, is a genus of stargazers, a type of percomorph fish from the family Uranoscopidae, part of the order Labriformes. The species in this genus are anatomically distinct uranoscopids, being characterized by internal nares and being the only group of marine bony fish having organs which produce electricity which are derived from the extraocular muscles. They are found on the Atlantic and Pacific coasts of the Americas. Species There are four extant and one extinct species included in ''Astroscopus'': * ''Astroscopus guttatus'' Abbott, 1860 - Northern stargazer * ''Astroscopus sexspinosus'' (Steindachner, 1876) - Brazilian Stargazer * '' Astroscopus y-graecum'', (Cuvier, 1829) - Southern stargazer * ''Astroscopus zephyreus'' Gilbert & Starks in Gilbert, 1897 * †''Astroscopus countermani'' Carnevale, Godfrey & Pietsch, 2011 Extinct species described from the Tortonian deposits of Calvert Cliffs, Maryland Maryland ( ) is a U.S. stat ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Bony Fish
Osteichthyes ( ; ), also known as osteichthyans or commonly referred to as the bony fish, is a Biodiversity, diverse clade of vertebrate animals that have endoskeletons primarily composed of bone tissue. They can be contrasted with the Chondrichthyes (cartilaginous fish) and the extinct placoderms and acanthodians, which have endoskeletons primarily composed of cartilage. The vast majority of extant taxon, extant fish are members of Osteichthyes, being an extremely diverse and abundant group consisting of 45 order (biology), orders, over 435 family (biology), families and 28,000 species. The group is divided into two main clades, the ray-finned fish (Actinopterygii, which makes up the vast majority of extant fish) and the lobe-finned fish (Sarcopterygii, which gave rise to all land vertebrates, i.e. tetrapods). The oldest known fossils of bony fish are about 425 million years old from the late Silurian, which are also transitional fossils showing a dentition, tooth pattern th ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Nostril
A nostril (or naris , : nares ) is either of the two orifices of the nose. They enable the entry and exit of air and other gasses through the nasal cavities. In birds and mammals, they contain branched bones or cartilages called turbinates, whose function is to warm air on inhalation and remove moisture on exhalation. Fish do not breathe through noses, but they do have two small holes used for smelling, which can also be referred to as nostrils (with the exception of Cyclostomi, which have just one nostril). In humans, the nasal cycle is the normal ultradian cycle of each nostril's blood vessels becoming engorged in swelling, then shrinking. The nostrils are separated by the septum. The septum can sometimes be deviated, causing one nostril to appear larger than the other. With extreme damage to the septum and columella, the two nostrils are no longer separated and form a single larger external opening. Like other tetrapod A tetrapod (; from Ancient Greek :wikti ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Labriformes
Labriformes is an Order (biology), order of ray-finned fishes within the clade Percomorpha. Some authors include the Labriformes as the clade Labroidei within the Perciformes while others include more Family (biology), families within the Labriformes, such as the cichlids and damselfishes. This order was previously restricted to Wrasse, wrasses, Parrotfish, parrotfishes, Odacidae, cales, and their close relatives, but most recent studies suggest that the Labriformes also contains highly aberrant groups such as the Stargazer (fish), stargazers and Sand lance, sand lances, which are placed in their own suborder. Almost all members of this order are marine, with the only exception being the amphidromous torrentfish of New Zealand. Families The following families are classified within this order, based on Eschmeyer's Catalog of Fishes, Catalog of Fishes (2025): * Order Labriformes ** Suborder Labroidei *** Family Centrogenyidae Henry Weed Fowler, Fowler, 1907 (false scorpionfishes) ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |