Category
page 1Bissekty Formation

Hybodus
Hybodus (from , 'crooked' and 'tooth') is an extinct genus of hybodont. Numerous species have been assigned to Hybodus spanning a large period of time, and it is currently considered a wastebasket taxon that is 'broadly polyphyletic' and requires reexamination. It has been suggested that Hybodus sensu stricto only consists of two species, the type species H. reticulatus and H. hauffianus, both known from the Early Jurassic of Europe, with H. obtusus from the Middle-Late Jurassic of Europe possibly also being a true species of Hybodus.

Turanoceratops
Turanoceratops ("Turan horned face") is a genus of herbivorous ceratopsian dinosaur from the late Cretaceous Bissekty Formation of Uzbekistan. The fossils dated from the mid-late Turonian stage, roughly 90 million years ago. The skull bore a pair of long brow horns like those seen in the Ceratopsidae, although Turanoceratops appears to have been transitional between earlier ceratopsians and ceratopsids, and not a ceratopsid itself.

Caenagnathasia
Caenagnathasia ('recent jaw from Asia') is a genus of small caenagnathid oviraptorosaurian theropod from the Late Cretaceous of Uzbekistan.

Itemirus
Itemirus is a genus of dromaeosaurid theropod dinosaur from the Turonian aged Bissekty Formation of the Late Cretaceous period of Uzbekistan.

Richardoestesia
Richardoestesia is a morphogenus of theropod dinosaur teeth, originally described from the Late Cretaceous of what is now Canada, the United States, and possibly also Uzbekistan. It currently contains two species, R. gilmorei and R. isosceles, and a possible third, R. asiatica, although it has been classified in its own genus Asiamericana. It has been used as a morphotaxon to describe other theropod teeth widely displaced in time and space from the type species. If all teeth assigned to the genus are truly reflective of the animals biology and taxonomic state (as some teeth go as far back as t

Scapanorhynchus
thumb|Scapanorhynchus texanus, Menuha Formation (Upper Cretaceous), southern Israel.
thumb|Near-complete fossil of S. lewisii, under special lighting

Timurlengia
Timurlengia is an extinct genus of tyrannosauroid dinosaurs known from the early Late Cretaceous (Turonian age) Bissekty Formation of the Kyzylkum Desert in Uzbekistan. The genus contains a single species, Timurlengia euotica, named in 2016 based on a braincase and numerous single bones of many individuals.
Ulughbegsaurus
Ulughbegsaurus (meaning "Ulugh Beg's lizard") is an extinct genus of carcharodontosaurid theropod dinosaurs from the Late Cretaceous Bissekty Formation (Turonian age) and Khodzhakul Formation (Cenomanian age) of Uzbekistan. The genus contains a single species, Ulughbegsaurus uzbekistanensis, known from multiple maxilla fragments.
Urbacodon
Urbacodon (meaning "URBAC tooth") is a genus of troodontid theropod dinosaur. Two species have been described, both of which are known from a partial dentary: U. itemirensis from the Dzharakuduk Formation (Cenomanian) of Uzbekistan and U. norelli from the Iren Dabasu Formation of China. Possible remains are also known from the Bissekty Formation (Turonian) of Uzbekistan.
Euronychodon
Euronychodon ("European claw tooth") is the name given to a genus of coelurosaur dinosaur from the Late Cretaceous of Europe and Asia. A small-sized dinosaur estimated to measure around in length, Euronychodon is known from teeth only. These are similar to those of another coelurosaur tooth genus, Paronychodon.
Bissektipelta
Bissektipelta (meaning "Bissekty shield") is a genus of ankylosaurine thyreophoran dinosaurs that lived in Asia during the Late Cretaceous in what is now the Bissekty Formation of Uzbekistan. Bissektipelta is a monospecific genus, containing only the type species B. archibaldi.
Levnesovia
Levnesovia is a genus of hadrosauroid dinosaur from the Late Cretaceous (Turonian) Bissekty Formation of Uzbekistan. It was related to Bactrosaurus. The type species is L. transoxiana. The genus name honours the late Russian paleontologist Lev Nessov, and the specific name refers to the ancient region Transoxiana. It is known from partial skulls, maxillae, dentaries and numerous bones of the postcranial skeleton.

Αζντάρχω
Azhdarcho is a genus of azhdarchid pterosaur from the late Cretaceous Period of the Bissekty Formation (middle Turonian stage, about 92 million years ago) of Uzbekistan, as well as the Zhirkindek Formation of Kazakhstan and possibly also the Ialovachsk Formation of Tajikistan. It is known from fragmentary remains including the distinctive, elongated neck vertebrae that characterizes members of the family Azhdarchidae, a family that includes many giant pterosaurs such as Quetzalcoatlus. The name Azhdarcho comes from the Persian word azhdar (), a dragon-like creature in Persian mythology. The ty
Dzharatitanis
Dzharatitanis (meaning "Dzharakuduk titan") is an extinct genus of probable titanosaurian sauropod dinosaur from the Late Cretaceous (Turonian age) Bissekty Formation of Uzbekistan. The genus contains a single species, Dzharatitanis kingi, known from a single tail vertebra. Dzharatitanis was considered to be a member of the Rebbachisauridae when it was named in 2021, but subsequent research has considered it to be a titanosaur.
Asiamericana
Asiamericana is a dubious genus of coelurosaur known only from isolated teeth found in the Bissekty Formation of Uzbekistan. It was named to recognize the occurrence of similar fossil teeth in Central Asia and North America. These regions once formed a connected land mass, during the Cretaceous period.
Abavornis
Abavornis is the name given to a genus of primitive birds from the Late Cretaceous, containing the single species A. bonaparti (named in honor of the Argentine paleontologist José Bonaparte). It was probably a member of the Enantiornithes, but as it is only known from a single broken coracoid (TsNIGRI 56/11915), which, however, looks typically enantiornithine, that assignment is tentative. The fossil is from Late Cretaceous Bissekty Formation (Turonian, 92 MYA) in the Kyzylkum, Uzbekistan. Another partial coracoid (PO 4605) is very similar and is referred to as Abavornis sp.; it might belong t
Bissekty Formation
Geological formation in Uzbekistan
Dzharacursor
Dzharacursor (meaning "Dzharakuduk runner") is a genus of ornithomimid theropod dinosaurs from the Late Cretaceous (Turonian age) Bissekty Formation of Uzbekistan. The type and only species is Dzharacursor bissektensis, originally assigned to the genus Archaeornithomimus.
Dzharaonyx
Dzharaonyx (meaning "Dzharakuduk claw", named after the type locality) is a genus of alvarezsaurid theropod from the Late Cretaceous Bissekty Formation of Uzbekistan. The type and only species is D. eski. The specific epithet "eski" is an Uzbek word for "old".
==Discovery and naming==
thumb|left|A map of the locality where Dzharaonyx was found in Uzbekistan (red star)
All remains of Dzharaonyx were discovered at a single locality called Dzharakuduk, which is in the Kyzylkum Desert of Uzbekistan. The first remains belonging to alvarezsaurid dinosaurs, which would later be referred to Dzharaonyx
Kuszholia
Kuszholia (meaning "Milky Way bird" after the Kazakh term for the Milky Way, құс жолы qus jolı) is the name given to a genus of primitive birds or bird-like dinosaurs from the Late Cretaceous.
Belonostomus
Belonostomus (from , 'dart' and 'mouth') is a genus of prehistoric ray-finned fish that was described by Louis Agassiz in 1844. It is a member of the order Aspidorhynchiformes, a group of fish known for their distinctive elongated rostrums.
Aidachar
Aidachar (named for Aydahar, a mythical Kazakh dragon) is an extinct genus of freshwater ichthyodectiform ray-finned fish from the Late Cretaceous (Cenomanian-Turonian) of Central Asia and North Africa.
Incolornis
Incolornis (meaning "inhabitant bird") is an extinct genus of basal birds from the Late Cretaceous (Coniacian, 89–86 mya). Remains have been found in the Bissekty Formation in Uzbekistan.
It is only known from fragmentary coracoids. The systematic position of the genus is unclear; it might have been an enantiornithine bird.
Xylophaga
Xylophaga is a genus of bivalves in the family Pholadidae.
Cretodus
Cretodus is an extinct genus of large mackerel sharks belonging to the proposed family Pseudoscapanorhynchidae. Cretodus lived during the Late Cretaceous, ranging from the Cenomanian to the Coniacian (approximately 100 to 89 million years ago). The genus is well-known from strata deposited in the Western Interior Seaway (North America), and from the Late Cretaceous of Europe, Africa, and possibly Asia. Cretodus is primarily represented in the fossil record by isolated teeth and vertebral centra, though a couple of associated dentitions and vertebral columns have been found.
Myledaphus
Myledaphus is an extinct genus of guitarfish. It currently contains four valid species found in North America (M. bipartitus, M. pustulosus), South America (M. araucanus), and Central Asia (M. tritus). It is confirmed to have lived during the Late Cretaceous, with possible occurrences in the Paleocene and early Eocene. While the genus is mostly known from teeth, two partial skeletons of M. bipartitus have been found in the Dinosaur Park Formation of Alberta.
Explorornis
Explorornis ("discovered bird", from Latin explōrō "to discover" and Ancient Greek ornis (όρνις) "bird") is a genus of Mesozoic birds which lived during the mid-late Turonian stage, around 90 million years ago, in the Bissekty Formation of the Kyzyl Kum, in present-day Uzbekistan.
Kizylkumavis
Kizylkumavis is an extinct genus of enantiornithine birds known from the Late Cretaceous Bissekty Formation of the Kyzyl Kum in Uzbekistan.
Lenesornis
Lenesornis is a genus of enantiornithine birds which lived during the Late Cretaceous about 90 Ma and is known from fossils found in the Bissekty Formation in the Kyzyl Kum, Uzbekistan.
Zhyraornis
Zhyraornis is a genus of prehistoric bird from the late Cretaceous period (middle Turonian, 92 mya). Its fossils have been found in Bissekty Formation deposits near Dzharakuduk in the Kyzyl Kum, Uzbekistan. Two species have been assigned to this genus: Zhyraornis kashkarovi and Zhyraornis logunovi. Both are known only from partial pelvic bones (synsacra).
Kansajsuchus
Kansajsuchus is an extinct genus of paralligatorid mesoeucrocodylian. It is based on PIN 2399/301, a right premaxilla, one of the bones of the tip of the snout. This specimen was found in rocks of the lower Santonian-age Upper Cretaceous Yalovach Svita of Kansai, in the Fergana Basin of Tajikistan. Additional fossils including vertebrae and bony armor have been assigned to this genus. It would have been a large animal, estimated at between long. Kansajsuchus was described in 1975 by Mikhail Efimov. The type species is Kansajsuchus extensus.
Plagiostoma
genus of molluscs (fossil)
Sazavis
Sazavis was an enantiornithine bird from the Late Cretaceous. It might have been related to Nanantius and lived in what is now the Kyzyl Kum of Uzbekistan. There is a single species known to date, Sazavis prisca.