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Trewavasia
''Trewavasia carinata'' is an extinct pycnodontid fish in the family Coccodontidae that lived during the lower Cenomanian of what is now Lebanon. It had a large, forward-pointing horn-like spine between its eyes, and a massive stump-like spine emanating from the back of its head. ''T. carinata'' is closely related the genera ''Corusichthys'' and ''Hensodon'', as well as ''Coccodus ''Coccodus'' is an extinct genus of extinct pycnodontid fish that lived during the lower Cenomanian. The various species had a pair of massive, curved spines emanating from the lower sides of the head, and one curved spine on the top of its hea ...''. References Cretaceous bony fish Pycnodontiformes genera Late Cretaceous fish of Asia {{Cretaceous-fish-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trewavasia Carinata
''Trewavasia carinata'' is an extinct pycnodontid fish in the family Coccodontidae that lived during the lower Cenomanian of what is now Lebanon. It had a large, forward-pointing horn-like spine between its eyes, and a massive stump-like spine emanating from the back of its head. ''T. carinata'' is closely related the genera ''Corusichthys'' and ''Hensodon'', as well as ''Coccodus ''Coccodus'' is an extinct genus of extinct pycnodontid fish that lived during the lower Cenomanian. The various species had a pair of massive, curved spines emanating from the lower sides of the head, and one curved spine on the top of its hea ...''. References Cretaceous bony fish Pycnodontiformes genera Late Cretaceous fish of Asia {{Cretaceous-fish-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coccodontidae
Coccodontidae is a family of extinct pycnodontid fish that lived during the lower Cenomanian. The various genera had massive, curved spines. The family is composed of five genera, the type genus, ''Coccodus'', '' Paracoccodus'' which was split off from ''Coccodus'', the newly described ''Corusichthys'', the sexually dimorphic ''Hensodon'', and ''Trewavasia''. ''Ichthyoceros'' was, at one time, placed in Coccodontidae, but then was moved with ''Trewavasia'' in "Trewavasiidae,"Nursall, Ralph Mesozoic Fishes – Systematics and Paleoecology, G. Arratia & G. Viohl (eds.), Verlag Dr. Friedrich Pfeil, München, Germany, 1996 – "The phylogeny of pycnodont fishes" and then, in 2014, was placed in the related pycnodontid family Gladiopycnodontidae, while ''Trewavasia'' was returned to Coccodontidae. Coccodontidae, together with Gladiopycnodontidae and the superficially shrimpfish-like Gebrayelichthyidae, make up the pycnodontid superfamily Coccodontoidea. See also * Prehistoric ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Corusichthys
''Corusichthys megacephalus'' is an extinct pycnodontid that lived during the lower Cenomanian of what is now Lebanon. ''C. megacephalus'' is known from a 34 mm long fossil. It had plates arranged like a helmet around its head, and had a massive, triangular spine on its dorsal side. ''C. megacephalus'' is closely related the genera ''Trewavasia'' and ''Hensodon'', as well as ''Coccodus''. See also * Prehistoric fish * List of prehistoric bony fish A ''list'' is any set of items in a row. List or lists may also refer to: People * List (surname) Organizations * List College Albert A. List College of Jewish Studies, known simply as List College, is the undergraduate school of the J ... References Cretaceous bony fish Pycnodontiformes genera Late Cretaceous fish of Asia {{Cretaceous-fish-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coccodus
''Coccodus'' is an extinct genus of extinct pycnodontid fish that lived during the lower Cenomanian. The various species had a pair of massive, curved spines emanating from the lower sides of the head, and one curved spine on the top of its head. Unlike most pycnodontids (which tend to have short, marine butterflyfish-like bodies), ''Coccodus'' species had a comparatively long body, giving the living animals a superficial resemblance to a scaly chimaera. ''Coccodus'' is closely related to the similarly spined genera ''Trewavasia, Corusichthys, Paracoccodus'', and ''Hensodon'', which also lived during the Cenomanian of Lebanon. Formerly in ''Coccodus'' The species ''Coccodus lindstroemi'' was recently determined to be a species complex, and various specimens assigned to ''C. lindstroemi'' were redescribed as species of the gladiopycnodontid genus '' Joinivillichthys''Taverne, Louis, and Luigi Capasso. "On the “Coccodus” lindstroemi species complex (Pycnodontiformes, Gladi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pycnodontiformes Genera
Pycnodontiformes is an extinct order of primarily marine bony fish. The group first appeared during the Late Triassic and disappeared during the Eocene. The group has been found in rock formations in Africa, Asia, Europe, North and South America. They were small to middle-sized fish, generally with laterally-compressed deep bodies, some with almost circular outlines, adapted for manuverability in reef-like environments. The group was morphologically diverse containing forms such the very short but deep Gebrayelichthyidae and the horned ''Ichthyoceros,'' both from the early Late Cretaceous of Lebanon. Most, but not all members of the groups had jaws with round and flattened teeth, well adapted to crush food items (durophagy), such as echinoderms, crustaceans and molluscs. Some pyncodontiformes developed piranha like teeth used for eating flesh. Most species inhabited shallow marine reef environments, while a handful of species lived in freshwater or brackish conditions. While rare ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cenomanian
The Cenomanian is, in the ICS' geological timescale, the oldest or earliest age of the Late Cretaceous Epoch or the lowest stage of the Upper Cretaceous Series. An age is a unit of geochronology; it is a unit of time; the stage is a unit in the stratigraphic column deposited during the corresponding age. Both age and stage bear the same name. As a unit of geologic time measure, the Cenomanian Age spans the time between 100.5 and 93.9 million years ago (Mya). In the geologic timescale, it is preceded by the Albian and is followed by the Turonian. The Upper Cenomanian starts around at 95 Mya. The Cenomanian is coeval with the Woodbinian of the regional timescale of the Gulf of Mexico and the early part of the Eaglefordian of the regional timescale of the East Coast of the United States. At the end of the Cenomanian, an anoxic event took place, called the Cenomanian-Turonian boundary event or the "Bonarelli event", that is associated with a minor extinction event for marine spec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pycnodontid
Pycnodontidae is an extinct family of ray-finned fishes, ranging from the Triassic period until the Eocene. Genera * ''Acrotemnus'' Agassiz, 1843 * ''Anomoeodus'' Forir, 1887 * ''Athrodon'' Sauvage, 1880 * ''Callodus'' Thurmond, 1974 * ''Coccodus'' * ''Coelodus'' Haeckel * ''Gyrodus'' Agassiz, 1843 * ''Iemanja'' Wenz, 1989 * ''Macromesodon'' Blake, 1905 * ''Microdus'' * ''Micropycnodon'' Hibbard and Graffham, 1945 * ''Neoproscinetes'' De Figueiredo and Silva Santos, 1990 * ''Nonaphalagodus'' Thurmond, 1974 * ''Omphalodus'' von Meyer, 1847 * ''Paleobalistum'' * ''Paramicrodon'' Thurmond, 1974 * ''Polypsephis'' Hay, 1899 * ''Proscinetes'' Gistl, 1848 * ''Pycnodus'' Agassiz, 1835 * ''Pycnomicrodon'' Hibbard and Graffham, 1941 * ''Scalacurvichthys'' Cawley and Kriwet, 2017 * ''Sphaerodus'' Agassiz, 1843 * ''Stemmatodus'' * ''Tepexichthys'' Applegate, 1992 * ''Thiollierepycnodus'' Ebert, 2020 * ''Typodus'' Quenstedt, 1858 References Pycnodontiformes Triassic first appearanc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lebanon
Lebanon ( , ar, لُبْنَان, translit=lubnān, ), officially the Republic of Lebanon () or the Lebanese Republic, is a country in Western Asia. It is located between Syria to the north and east and Israel to the south, while Cyprus lies to its west across the Mediterranean Sea; its location at the crossroads of the Mediterranean Basin and the Arabian hinterland has contributed to its rich history and shaped a cultural identity of religious diversity. It is part of the Levant region of the Middle East. Lebanon is home to roughly six million people and covers an area of , making it the second smallest country in continental Asia. The official language of the state is Arabic, while French is also formally recognized; the Lebanese dialect of Arabic is used alongside Modern Standard Arabic throughout the country. The earliest evidence of civilization in Lebanon dates back over 7000 years, predating recorded history. Modern-day Lebanon was home to the Phoenicians, a m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Occipital Bone
The occipital bone () is a neurocranium, cranial dermal bone and the main bone of the occiput (back and lower part of the skull). It is trapezoidal in shape and curved on itself like a shallow dish. The occipital bone overlies the occipital lobes of the cerebrum. At the base of skull in the occipital bone, there is a large oval opening called the foramen magnum, which allows the passage of the spinal cord. Like the other cranial bones, it is classed as a flat bone. Due to its many attachments and features, the occipital bone is described in terms of separate parts. From its front to the back is the basilar part of occipital bone, basilar part, also called the basioccipital, at the sides of the foramen magnum are the lateral parts of occipital bone, lateral parts, also called the exoccipitals, and the back is named as the squamous part of occipital bone, squamous part. The basilar part is a thick, somewhat quadrilateral piece in front of the foramen magnum and directed towards the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hensodon
''Hensodon spinosus'' is an extinct pycnodontid that lived during the Upper Cenomanian of what is now Lebanon. ''H. spinosus'' superficially resembled a marine angelfish with a massive head, and a very spiny pectoral girdle. Different specimens have different arrangements of the horn-like frontal spines. One form has the horns arranged as a double-prong, assumed to be the male, and the other form, assumed to be the female, having the horns one after the other, like those of a rhinoceros A rhinoceros (; ; ), commonly abbreviated to rhino, is a member of any of the five extant species (or numerous extinct species) of odd-toed ungulates in the family Rhinocerotidae. (It can also refer to a member of any of the extinct species o .... References Pycnodontiformes genera Late Cretaceous fish Late Cretaceous fish of Asia {{paleo-rayfinned-fish-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cretaceous Bony Fish
The Cretaceous ( ) is a geological period that lasted from about 145 to 66 million years ago (Mya). It is the third and final period of the Mesozoic Era, as well as the longest. At around 79 million years, it is the longest geological period of the entire Phanerozoic. The name is derived from the Latin ''creta'', "chalk", which is abundant in the latter half of the period. It is usually abbreviated K, for its German translation ''Kreide''. The Cretaceous was a period with a relatively warm climate, resulting in high eustatic sea levels that created numerous shallow inland seas. These oceans and seas were populated with now-extinct marine reptiles, ammonites, and rudists, while dinosaurs continued to dominate on land. The world was ice free, and forests extended to the poles. During this time, new groups of mammals and birds appeared. During the Early Cretaceous, flowering plants appeared and began to rapidly diversify, becoming the dominant group of plants across the Earth by the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
