Belonostomus

Belonostomus (meaning "big long mouth") or Diphyodus (meaning "double tooth") is a genus of prehistoric ray-finned fish that was described by Louis Agassiz in 1844. Fossils range from 99.6 million years ago (species unknown) to 66 million years ago (B. longirostris).

Belonostomus species include:

Belonostomus
Temporal range: Late Cretaceous
Belonostomus muensteri
Belonostomus münsteri
Belonostomus crassirostris - Foto Giovanni Dall'Orto 22-Apr-2007
Belonostomus crassirostris
Scientific classification
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Belonostomus

Agassiz, 1834
Synonyms

Diphyodus

References

Arauco Basin

The Arauco Basin (Spanish: Cuenca de Arauco) is a sediment-filled depression –a sedimentary basin– in south-central Chile. In the context of plate tectonics it is classified as a forearc basin. The basin has an approximate area of 8,000 square kilometres (3,100 sq mi) and at its deeper parts the surface of its sedimentary fill reaches 200 metres (660 ft) below sea-level. The basin is interpreted as being part of an uplifted part of the continental shelf. To the west it bounds an active accretionary prism that lies next to the Chile trench and to the east it bounds metamorphic basement representing a fossil Paleozoic accretionary complex that has been intruded by the Coastal Batholith of central Chile.Traditionally the centre of coal mining in Chile, large-scale coal mining in Arauco Basin ended in the 1990s. Given a high density of geological faults that have displaced the coal beds and the thin nature of these (less than one metre) mining activity in Arauco Basin has proven difficult to mechanize.

Aspidorhynchiformes

Aspidorhynchiformes (meaning "shield snout form") is an extinct order of prehistoric ray-finned fish that was described by Bleeker in 1859.

B. indicus

B. indicus may refer to:

Belonostomus indicus, a prehistoric fish species

Bos indicus, the zebu, a type of domestic cattle

Burhinus indicus, the Indian Stone-curlew

Butastur indicus, the grey-faced buzzard, an Asian bird of prey

Bissekty Formation

The Bissekty Formation (sometimes referred to as Bissekt) is a geologic formation which crops out in the Kyzyl Kum desert of Uzbekistan, and dates to the Late Cretaceous Period. Laid down in the mid to late Turonian, it is dated to about 92 to 90 Ma (million years ago).The Bissekty Formation is characterised by a mix of marine, brackish, freshwater, and terrestrial animal fossils. This stands in contrast the strictly marine fossils found in the underlying Dzheirantui Formation, and indicates that the Bissekty was formed during the regression of a saltwater sea. The coastline expanded inland again in the upper portion of the Bissekty, represented by a proportional increase of fully aquatic species, which were almost completely absent from the middle period of the formation. Semi-aquatic species remained abundant during this middle period, and the geology of the formations indicates that a braided river system took the place of the coastline. Eventually the area was again completely underwater, during the time period represented by the later Aitym Formation, which preserves coastal marine sediments.

Byblos Fossil Museum

The Byblos Fossil Museum (aka Memory of Time) is a museum in Byblos, Lebanon. This museum contains fossil collections of sharks, eels, shrimps, squids, rays, coelacanthes and flying fish. It was opened in 1991 and is in the old souk of Byblos. Most of its collection comes from the nearby villages of Haqel-Byblos, Hjula, and Ennammoura.

Crato Formation

The Crato Formation is a geologic formation of Early Cretaceous (Aptian) age in northeastern Brazil's Araripe Basin. It is an important Lagerstätte (undisturbed fossil accumulation) for palaeontologists. The strata were laid down mostly during the early Aptian age, about 113 million years ago, in a shallow inland sea. At that time, the South Atlantic was opening up in a long narrow shallow sea.

The Crato Formation earns the designation of Lagerstätte due to an exceedingly well preserved and diverse fossil faunal assemblage. Some 25 species of fossil fishes are often found with stomach contents preserved, enabling paleontologists to study predator-prey relationships in this ecosystem. There are also fine examples of pterosaurs, reptiles and amphibians, invertebrates (particularly insects), and plants. Even dinosaurs are represented: a new maniraptor was described in 1996. The unusual taphonomy of the site resulted in limestone accretions that formed nodules around dead organisms, preserving even soft parts of their anatomy.

Judith River Formation

The Judith River Formation is a fossil-bearing geologic formation in Montana, and is part of the Judith River Group. It dates to the Late Cretaceous, between 80 and 75 million years ago, corresponding to the "Judithian" land vertebrate age. It was laid down during the same time period as portions of the Two Medicine Formation of Montana and the Oldman Formation of Alberta.

It is an historically important formation, explored by early American paleontologists such as Edward Drinker Cope, who named several dinosaurs from scrappy remains found here on his 1876 expedition (such as Monoclonius). Modern work has found nearly complete skeletons of the hadrosaurid Brachylophosaurus.

List of prehistoric bony fish genera

This List of prehistoric bony fish is an attempt to create a comprehensive listing of all genera from the fossil record that have ever been considered to be bony fish (class osteichthyes), excluding purely vernacular terms. The list includes all commonly accepted genera, but also genera that are now considered invalid, doubtful (nomina dubia), or were not formally published (nomina nuda), as well as junior synonyms of more established names, and genera that are no longer considered members of osteichthyes.

This list includes 1,386 generic names.

Extinct genera are marked with a dagger (†).

Extant genera are bolded.

List of the Mesozoic life of Alabama

This list of the Mesozoic life of Alabama contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Alabama and are between 252.17 and 66 million years of age.

List of the Mesozoic life of Montana

This list of the Mesozoic life of Montana contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Montana and are between 252.17 and 66 million years of age.

List of the prehistoric life of Alabama

This list of the prehistoric life of Alabama contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Alabama.

List of the prehistoric life of Montana

This list of the prehistoric life of Montana contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Montana.

List of the prehistoric life of North Dakota

This list of the prehistoric life of North Dakota contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of North Dakota.

List of the prehistoric life of Wyoming

This list of the prehistoric life of Wyoming contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Wyoming.

Milk River Formation

The Milk River Formation is a near- shore to terrestrial sedimentary unit deposited during the Late Cretaceous (late Santonian to early Campanian) in southern Alberta. It is equivalent to the marine Lea Park Formation of eastern Alberta, and the Eagle and Telegraph Creek Formations of north-central Montana, and to the upper part of the Niobrara Formation in Kansas.

In Alberta, the Milk River Formation is subdivided into the Telegraph Creek, Virgelle, and Deadhorse Coulee Members. The formation has produced an extensive but little known vertebrate fauna (see Table). Radiometric dates place deposition of the Milk River Formation between ~84.5 Ma and 83.5 Ma (Payenberg et al. 2002).

Pachyrhinosaurus

Pachyrhinosaurus (meaning in Greek "thick-nosed lizard", from Παχυ (pachy), thick; ρινό (rinó), nose; and σαυρος (sauros), lizard) is an extinct genus of centrosaurine ceratopsid dinosaur from the Late Cretaceous period of North America. The first examples were discovered by Charles M. Sternberg in Alberta, Canada, in 1946, and named in 1950. Over a dozen partial skulls and a large assortment of other fossils from various species have been found in Alberta and Alaska. A great number were not available for study until the 1980s, resulting in a relatively recent increase of interest in Pachyrhinosaurus.

Three species have been identified. P. lakustai, from the Wapiti Formation, the bonebed horizon of which is roughly equivalent age to the upper Bearpaw and lower Horseshoe Canyon Formations, is known to have existed from about 73.5-72.5 million years ago. P. canadensis is younger, known from the lower Horseshoe Canyon Formation, about 71.5-71 Ma ago and the St. Mary River Formation. Fossils of the youngest species, P. perotorum, have been recovered from the Prince Creek Formation of Alaska, and date to 70-69 million years ago. The presence of three known species makes this genus the most speciose among the centrosaurines.

Quiriquina Formation

The Quiriquina Formation is a geological formation in Chile whose strata date back to the Late Cretaceous. Dinosaur remains are among the fossils that have been recovered from the formation. The glauconitic sandstones and conglomerates of the formation were deposited in a marine environment.

Wessex Formation

The Wessex Formation is a fossil-rich English geological formation that dates from the Berriasian to Barremian stages (about 145–125 million years ago) of the Early Cretaceous. It forms part of the Wealden Group and underlies the younger Vectis Formation and overlies the Durlston Formation. The dominant lithology of this unit is mudstone with some interbedded sandstones.

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