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Extinct marine lizards of the Late Cretaceous
Mosasaurs (from Latin Mosa meaning the 'Meuse', and Greek σαύρος sauros meaning 'lizard') are an extinct group of large aquatic reptiles within the family
Mosasaur
Extinct genus of marine squamate reptiles
Tylosaurus (/ˌtaɪˈloʊˈsɔːrəs/; "knob lizard") is a genus of russellosaurine mosasaur (an extinct group of predatory marine lizards) that lived about 92 to 66
Tylosaurus
Extinct genus of marine lizard from the Late Cretaceous
endothermic ("warm-blooded"), an adaptation in squamates only found in mosasaurs. There is considerable morphological variability across the currently-recognized
Mosasaurus
Genus of mosasaurid marine reptile
extinct genus of marine reptiles belonging to the mosasaur family. It is one of the largest mosasaurs, though its size has been revised more than once
Hainosaurus
Extinct genus of lizards
Prognathodon is an extinct genus of marine lizard belonging to the mosasaur family. It is classified as part of the Mosasaurinae subfamily, alongside genera
Prognathodon
This timeline of mosasaur research is a chronologically ordered list of important fossil discoveries, controversies of interpretation, and taxonomic revisions
Timeline_of_mosasaur_research
This list of mosasaurs is a comprehensive listing of all genera that have ever been included in the family Mosasauridae or the parent clade Mosasauroidea
List_of_mosasaur_genera
Extinct species of mosasaurs
nearly-complete skull and partial skeleton. Jormungandr was a medium-sized mosasaur, at around 5–7 metres (16–23 ft) long, and its skeletal anatomy exhibits
Jormungandr_walhallaensis
Extinct genus of lizards
("oar wrist") is an extinct genus of aquatic lizards belonging to the mosasaur family, living around 84–81 million years ago during the middle Santonian
Platecarpus
Geological formation in the United States
habitat segregation of mosasaurs in the Upper Cretaceous of western and central Alabama, with an historical review of Alabama mosasaur discoveries". Journal
Demopolis_Chalk
Extinct squamates of the Cretaceous period
clade is defined as all descendants of the last common ancestor of the mosasaur Mosasaurus hoffmannii and dolichosaurs Dolichosaurus, Coniasaurus, and
Mosasauria
Extinct genus of mosasaurs
Megapterygius (meaning "large wing") is an extinct genus of mosasaurine mosasaur from the Late Cretaceous Toyajo Formation (Hasegawa Muddy Sandstone Member)
Megapterygius
Extinct genus of lizards
plesiosaurs, and other mosasaurs. In some later mosasaur species, their teeth were modified to rend flesh as well. While many other mosasaurs were capable of
Globidens
Extinct genus of lizards
known from the Sannine Formation in Lebanon. Paleontology portal List of mosasaurs Michael W. Caldwell (2006). "A new species of Pontosaurus (Squamata, Pythonomorpha)
Pontosaurus
Extinct genus of lizards
Halisaurus is an extinct genus of mosasaur named by Othniel Charles Marsh in 1869. The holotype, consisting of an angular and a basicranium fragment discovered
Halisaurus
Extinct subfamily of lizards
The Tylosaurinae are a subfamily of mosasaurs, a diverse group of Late Cretaceous marine squamates. Members of the subfamily are informally and collectively
Tylosaurinae
Extinct genus of lizards
Angolasaurus ("Angola lizard") is an extinct genus of mosasaur. Definite remains from this genus have been recovered from the Turonian and Coniacian of
Angolasaurus
Dinosaurs and other Mesozoic reptiles that lived in what is now New Zealand
Octávio; Jackbs, Maria Luísa Morais; da Silva Tavares, Tatiana (2006). "New mosasaur material from the Maastrichtian of Angola, with notes on the phylogeny
List of dinosaurs and other Mesozoic reptiles of New Zealand
List_of_dinosaurs_and_other_Mesozoic_reptiles_of_New_Zealand
Extinct subfamily of lizards
The Yaguarasaurinae are a subfamily of mosasaurs, a diverse group of Late Cretaceous marine squamates. Members of the subfamily are informally and collectively
Yaguarasaurinae
Extinct genus of marine squamate reptiles
Kaikaifilu is an extinct genus of large mosasaurs that lived during the Maastrichtian stage of the Late Cretaceous, in what is now northern Antarctica
Kaikaifilu
Subfamily of reptiles
The Mosasaurinae are a subfamily of mosasaurs, a diverse group of Late Cretaceous marine squamates. Members of the subfamily are informally and collectively
Mosasaurinae
Late Cretaceous geologic formation in Israel
Duwi Formation of Egypt and the Amman and Ruseifa Formations of Jordan. Mosasaur fossils assigned to Prognathodon currii and pterosaur fossils have been
Mishash_Formation
Extinct subfamily of lizards
Plioplatecarpinae is a subfamily of mosasaurs, a diverse group of Late Cretaceous marine squamates. Members of the subfamily are informally and collectively
Plioplatecarpinae
Tribe of lizards
mosasaurine mosasaurs, a diverse group of Late Cretaceous marine squamates. Members of the tribe, known as "globidensins" or "globidensine mosasaurs", have
Globidensini
Extinct genus of orectolobiform shark
association with remains of the giant mosasaur Prognathodon saturator, which along with bite marks on the bones of the mosasaur specimen indicated that individuals
Plicatoscyllium
Hamlet in Alberta, Canada
site of the discovery of Mosasaur remains in the 2010s. To commemorate this discovery, there is a sculpture of the Mosasaur at the reservoir. List of
Carolside,_Alberta
Extinct genus of marine squamate reptiles
Taniwhasaurus is an extinct genus of mosasaurs (a group of extinct marine lizards) that lived during the Campanian stage of the Late Cretaceous. It is
Taniwhasaurus
Extinct genus of lizards
Carsosaurus is a genus of extinct amphibious reptiles, in the mosasaur superfamily, containing only the species Carsosaurus marchesetti. It is known from
Carsosaurus
Extinct genus of lizards
Carinodens is an extinct genus of Cretaceous marine lizard belonging to the mosasaur family. "Carinodens" means "keel teeth" and was named in 1969 as a replacement
Carinodens
List of life forms
this time in the Late Cretaceous many new lifeforms appeared such as mosasaurs, which were to be some of the last of the aquatic lifeforms to evolve
Paleobiota of the Niobrara Formation
Paleobiota_of_the_Niobrara_Formation
Extinct genus of lizards
discovered in freshwater sediments, unlike other mosasaurs, which were marine predators. It was a medium-sized mosasaur, reaching up to 6 metres (20 ft) in length
Pannoniasaurus
Phosphate basin in Morocco
late Maastrichtian deposits of the Khouribga Phosphates preserve abundant mosasaur fossils, especially isolated teeth. At least fifteen species are represented
Ouled_Abdoun_Basin
Extinct genus of lizards
Plotosaurus ("swimmer lizard") is an extinct genus of large mosasaurs which lived during the Upper Cretaceous (Maastrichtian) in what is now North America
Plotosaurus
Genus of lizards
Plioplatecarpus is a genus of mosasaur lizard. Like all mosasaurs, it lived in the late Cretaceous period, about 82-68 million years ago. Plioplatecarpus
Plioplatecarpus
Extinct genus of lizards
subsequent studies rejected the synonymy. Pluridens was a moderately large mosasaur at roughly 5–6 m (16–20 ft) in length if the proportions of the dentary
Pluridens
Extinct genus of lizards
Goronyosaurus is an extinct genus of marine lizard belonging to the mosasaur family. Fossils of Goronyosaurus are exclusively known from the Late Maastrichtian
Goronyosaurus
Group of squamate reptiles
Many researchers believe that snakes share a common marine ancestry with mosasaurs, a suggestion advanced in 1869 by Edward Drinker Cope, who coined the
Ophidia
Public fossil dig site in New Jersey
Dr. Lacovara with a Mosasaur vertebra found by Dr. Zachary Boles
Edelman_Fossil_Park
Geologic formation in North America
of shellfish, bony fish, sharks, rays, birds, and marine reptiles like mosasaurs such as Prognathodon overtoni and Plioplatecarpus peckensis, plesiosaurs
Bearpaw_Formation
This list of mosasaur type specimens is a list of fossils that are official standard-bearers for inclusion in the species and genera of the squamate clade
List of mosasaur type specimens
List_of_mosasaur_type_specimens
Extinct family of lizards
be either nested within basal mosasauroids as a third group alongside mosasaurs and aigialosaurs, or as the sister group to the mosasauroids. The difficulties
Dolichosauridae
This list of fossils with consumulites contains fossil specimens discovered to contain the preserved remains of food that the deceased animal had ingested
List of fossils with consumulites
List_of_fossils_with_consumulites
Extinct genus of lizards
("phosphate lizard") is an extinct genus of marine lizard belonging to the mosasaur family. Phosphorosaurus is classified within the Halisaurinae subfamily
Phosphorosaurus
Extinct tribe of lizards
Mosasaurini is an extinct tribe of mosasaurine mosasaurs who lived during the Late Cretaceous and whose fossils have been found in North America, South
Mosasaurini
Extinct genus of lizards
plioplatecarpine mosasaur from the Maastrichtian of Morocco and possibly Angola. In 2020, Strong and colleagues named a new genus of plioplatecarpine mosasaur Gavialimimus
Gavialimimus
Second era of the Phanerozoic Eon
extinction whose victims included the non-avian dinosaurs, pterosaurs, mosasaurs, and plesiosaurs. The Mesozoic was a time of significant tectonic, climatic
Mesozoic
Geologic formation in the United States
halisaurine mosasaur. Platecarpus P. sp. Phoebus Landing, NC A plioplatecarpine mosasaur. Prognathodon P. sp. Phoebus Landing, NC A mosasaurine mosasaur. Teiidae
Tar_Heel/Coachman_Formation
Extinct genus of shark
its ecosystem and preyed on a large variety of marine animals including mosasaurs, plesiosaurs, sharks and other large fish, pterosaurs, and occasionally
Cretoxyrhina
Legendary sea-dwelling creature
Basilosaurus Colossal squid Giant squid Ichthyosauria Here be dragons Megalodon Mosasaur Plesiosaur Pliosauroidea Edward Haies: Sir Humphrey Gilbert's Voyage To
Sea_monster
Geological Formation in Maryland
"Upper Cretaceous Reptiles from the Severn Formation of Maryland". The Mosasaur. 3: 63–85. Hartstien, Eugene F; Decina, Lawrence E; Keil, Ronald F (1999)
Severn_Formation
placoderm genera List of chitinozoan genera List of eurypterid genera List of mosasaur genera List of prehistoric annelid genera List of prehistoric barnacles
Lists_of_prehistoric_animals
Geological group located in Sakhalin and Hokkaido
unit, mostly ammonites and bivalves, but also marine vertebrates such as mosasaurs, plesiosaurs and marine turtles. Dinosaur remains are among the fossils
Yezo_Group
Large bodied African mosasaur
Thalassotitan ("titan of the seas") is an extinct genus of large mosasaurs (a group of extinct marine lizards) that lived during the late Maastrichtian
Thalassotitan
Largest known fish species
reptiles and mammals, such as the extinct ichthyosaur, plesiosaur and mosasaur reptiles (none of which are dinosaurs) and the extant sirenia and cetacea
List_of_largest_fish
Restoration of the Late Cretaceous mosasaur Platecarpus
List of the prehistoric life of Kansas
List_of_the_prehistoric_life_of_Kansas
American paleontologist
dissertation was on tracking the diversity, biostratigraphy, and extinction of mosasaurs, an extinct group of marine reptiles whose remains are found in Late Cretaceous
Marcus_R._Ross
Extinct subfamily of lizards
The Tethysaurinae are a subfamily of mosasaurs, a diverse group of Late Cretaceous marine squamates. Members of the subfamily are informally and collectively
Tethysaurinae
Extinct genus of lizards
was a genus of mosasauroid from the Late Cretaceous period of Europe and the Middle East. Paleontology portal List of mosasaurs Oceans of Kansas v t e
Mesoleptos
Extinct family of lizards
and Dallasaurus and even entire mosasaur clades, such as the Tethysaurinae. The term "plesiopedal mosasaurs" or "mosasaurs with a plesiopedal limb condition"
Aigialosauridae
Extinct subclass of cephalopod molluscs
news magazine online, Cephalopod fossil articles. William R. Wahl * Mosasaur Bite Marks on an Ammonite. Preservation of an Aborted Attack? Mosasaur diet
Ammonoidea
Extinct genus of lizards
"sea" and Greek sauros "lizard"; meaning "Sea Lizard") was a genus of mosasaur from the Late Cretaceous period. Its fossil remains have been discovered
Moanasaurus
Extinct genus of reptiles
length of the osseus limb", as compared to more derived "hydropedal" mosasaurs in which the propodial elements are stout and have been substantially
Dallasaurus
Cretaceous geological formation in Skåne, Sweden
plesiosaurs, turtles and crocodylomorphs, as well as one of the most diverse mosasaur faunas in the world and some of the few non-avian dinosaurs known from
Kristianstad_Basin
Geologic formation in Jordan
locality include articulated fish and mosasaur skeletons, mosasaur skin impressions, and evidence of mosasaur carcasses scavenged by nurse sharks & other
Muwaqqar_Chalk-Marl_Formation
revise diagnoses of both species. Voiculescu-Holvad et al. (2026) revise mosasaur fossil material from the Maastrichtian strata from Denmark, reporting the
2026_in_reptile_paleontology
Paleontological research in the U.S. state of North Dakota
and mosasaurs of the region's Mesozoic rock. Unktehi was described as a snakelike monster equipped with feet, like the elongate sinuous mosasaurs who
Paleontology_in_North_Dakota
Extinct genus of lizards
"jaws of death") is an extinct genus of marine lizard belonging to the mosasaur family. Fossils of Gnathomortis have been recovered from the Early Campanian
Gnathomortis
Limbless, scaly, elongate reptile
therefore not to mosasaurs, the proposed ancestor in the aquatic scenario of their evolution. However, more evidence links mosasaurs to snakes than to
Snake
time period in which non-avian dinosaurs, pterosaurs, plesiosaurs, and mosasaurs existed. James David Archibald · Alexander Olegovich Averianov, Phylogenetic
List of vertebrate fauna of the Maastrichtian stage
List_of_vertebrate_fauna_of_the_Maastrichtian_stage
Extinct genus of basal mosasaur
Dale A. Russell for his extensive work on mosasaurs ("Russell's lizard"). This is the second species of mosasaur to have been named for Russell, the first
Russellosaurus
Sixth and last age of the Late Cretaceous
recognized groups such as non-avian dinosaurs, pterosaurs, plesiosaurs, and mosasaurs, as well as many other lesser-known groups, died out. The cause of the
Maastrichtian
Genus of lizards
Portunatasaurus Vallecillosaurus Related articles Timeline of mosasaur research List of mosasaur genera List of mosasaur-bearing stratigraphic units Category
Portunatasaurus
Extinct genus of lizards
"near Tylosaurus", is an extinct genus of marine lizard belonging to the mosasaur family. It is classified as part of the Mosasaurinae subfamily, alongside
Plesiotylosaurus
Extinct genus of lizards
Eremiasaurus ("desert lizard") is a genus of mosasaurs, an extinct group of marine reptiles, who lived during the Maastrichtian stage of the Late Cretaceous
Eremiasaurus
Clade of reptiles
erect beneath the body. Other prehistoric animals, including pterosaurs, mosasaurs, ichthyosaurs, plesiosaurs, and Dimetrodon, while often popularly conceived
Dinosaur
Goddess
sea. Every year the Luanda Island Feast is held to honor the deity. The mosasaur Prognathodon kianda, found in Angola, was named after her. The Angolan
Kianda
remains a nomen nudum. Clidastes "moorevillensis" is an informal species of mosasaur from the Late Cretaceous Mooreville Chalk Formation of Alabama. First named
List of informally named Mesozoic reptiles
List_of_informally_named_Mesozoic_reptiles
Order of reptiles
5 m (21 ft) reticulated python (Malayopython reticulatus). The extinct mosasaurs reached lengths over 14 m (46 ft). Among other reptiles, squamates are
Squamata
Geological formation in Saudi Arabia
Mosasaurs of the Adaffa Formation Genus Species Location Stratigraphic position Material Notes Image Mosasauridae Indet. Indeterminate Arabian Peninsula
Adaffa_Formation
Aquatically secondarily adapted reptiles
the group "Enaliosauria", a classification now cladistically obsolete), mosasaurs, nothosaurs, placodonts, sea turtles, thalattosaurs and thalattosuchians
Marine_reptile
Topics referred to by the same term
Wakayama Domain, a Japanese feudal domain in Kii Province Wakayama Soryu, a mosasaur Bokusui Wakayama (若山 牧水; 1885–1928), Japanese writer Genzō Wakayama (若山
Wakayama
Extinct subfamily of lizards
The Halisaurinae are a subfamily of mosasaurs, a group of Late Cretaceous marine lizards. They were small to medium-sized, ranging from just under 3 meters
Halisaurinae
Illustration of a reconstructed skull of the Late Cretaceous mosasaur Globidens
List of the Mesozoic life of Kansas
List_of_the_Mesozoic_life_of_Kansas
(mainly Mesozoic) archosaurs, pterosaurs, and marine reptiles such as mosasaurs and plesiosaurs. Three long film series are centered around dinosaurs:
List of films featuring dinosaurs
List_of_films_featuring_dinosaurs
2007 American film
Phosphate Mine, Negev Desert, Israel, 1998: A quarry in Europe reveals a mosasaur skull. Western Kansas, 1952: George Sternberg, Charles's older son, makes
Sea Monsters: A Prehistoric Adventure
Sea_Monsters:_A_Prehistoric_Adventure
Geological formation in Hokkaido, Japan
consisting of bivalves and ammonites. With vertebrates including the mosasaurs Mosasaurus hobetsuensis and Phosphorosaurus ponpetelegans. As well the
Hakobuchi_Formation
Geologic formation in India
well as teeth and post cranial material of a reptile, identified as a mosasaur, are known from Krem Puri Caves rocks, which are also a part of this formation
Mahadek_Formation
(Gallotia goliath) reached the length of 1.2–1.25 m (3.9–4.1 ft). The largest mosasaurs were Mosasaurus and Tylosaurus species, which grew to lengths of around
List of largest extinct lizards
List_of_largest_extinct_lizards
Geological formation in the United States of America
the upper Arcola Limestone Member and an unnamed lower member. Dinosaur, mosasaur, and primitive bird remains are among the fossils that have been recovered
Mooreville_Chalk
Geologic formation in the Great Plains of North America
dinosaurs, including tyrannosaurs, as well as large marine reptiles, such as mosasaurs, have been recovered from the formation. The Fox Hills Formation consists
Fox_Hills_Formation
Extinct genus of reptiles
Romeosaurus is an extinct genus of yaguarasaurine mosasaur known from the early Late Cretaceous "Lastame" lithotype (lower Turonian to lower Santonian)
Romeosaurus
Life restoration of the Late Cretaceous mosasaur Globidens
List of the Mesozoic life of South Dakota
List_of_the_Mesozoic_life_of_South_Dakota
Geological formation in New Jersey
B. (2005). "Recent mosasaur discoveries from New Jersey and Delaware, USA: stratigraphy, taphonomy and implications for mosasaur extinction." Netherlands
Woodbury_Formation
History museum in Manitoba, Canada
Isaak, 1987). The centre houses the world's largest publicly exhibited mosasaur of the species Tylosaurus pembinensis, Bruce. Bruce received a Guinness
Canadian Fossil Discovery Centre
Canadian_Fossil_Discovery_Centre
Irish-born American writer (born 1964)
genus and species of mosasaur, Selmasaurus russelli. More recent papers include one on the biostratigraphy of Alabama mosasaurs, published in the Journal
Caitlín_R._Kiernan
Life restoration of the Late Cretaceous mosasaur Halisaurus
List of the Mesozoic life of North Carolina
List_of_the_Mesozoic_life_of_North_Carolina
Extinct genus of lizards
Portunatasaurus Vallecillosaurus Related articles Timeline of mosasaur research List of mosasaur genera List of mosasaur-bearing stratigraphic units Category
Opetiosaurus
Extinct genus of sharks
during the Campanian due to increased competition with shell crushing mosasaurs in the groups Globidensini and Prognathodontini. Roberts, George (1839)
Ptychodus
Late Cretaceous sedimentary rock formation found in Angola
Mosasaurs of the Mocuio Formation Genus Species Location Stratigraphic position Material Notes Image Bentiabasaurus B. jacobsi Namibe Province, Angola
Mocuio_Formation
Prehistoric inland sea that split the continent of North America
Vertebrate denizens included predatory marine reptiles such as plesiosaurs, mosasaurs and Deinosuchus. Other marine life included sharks such as Squalicorax
Western_Interior_Seaway
MOSASAUR
MOSASAUR
MOSASAUR
MOSASAUR
Boy/Male
Hindu, Indian, Tamil
God of Iyyappa
Girl/Female
English
A climbing evergreen ornamental plant. Ivy.
Surname or Lastname
English
English : from an Old English byname, Budde, which was applied to a thickset or plump person. By the Middle English period it had become a common personal name, with derivatives formed with hypocoristic suffixes, Budecok and Budekin. Reaney derives it from Old English budda ‘beetle’.Shortened form of German Budde.John Budd was one of the free planters who assented to the ‘Fundamental Agreement’ of the New Haven Colony on June 4, 1639.
Male
German
Variant spelling of Old High German Walthere, WALTHER means "ruler of the army."Â In use by the Romani.
Girl/Female
Gujarati, Hindu, Indian, Kannada, Tamil
Satisfaction
Girl/Female
Hindu, Indian, Tamil, Telugu
Beautiful Swan; Goddess Saraswati
Biblical
or Hege, meditation; word; groaning; separation
Girl/Female
Assamese, Gujarati, Hindu, Indian, Kannada, Marathi, Sindhi, Telugu
Mild Fragrance; Humid
Boy/Male
Tamil
Parjanya | பரà¯à®œà®¨à¯à®¯Â
Hindu God of rain, A name of Lord Vishnu
Boy/Male
American, Australian, British, Chinese, Christian, Danish, Dutch, English, Finnish, French, German, Greek, Indian, Irish, Jamaican, Latin, Marathi, Polish, Portuguese, Swedish, Swiss
To Wear a Crown; Wreath; Garland; Crowned
MOSASAUR
MOSASAUR
MOSASAUR
MOSASAUR
MOSASAUR
n. pl.
An order of large, extinct, marine reptiles, found in the Cretaceous rocks, especially in America. They were serpentlike in form and in having loosely articulated and dilatable jaws, with large recurved tteth, but they had paddlelike feet. Some of them were over fifty feet long. They are, essentially, fossil sea serpents with paddles. Called also Pythonomarpha, and Mosasauria.
n. pl.
Same as Mosasauria.
n.
Any marine saurian; esp. (Paleon.) the large extinct species of Mosasaurus, Icthyosaurus, Plesiosaurus, and related genera.
n.
Alt. of Mosasaurian
n.
A genus of extinct marine reptiles, allied to the Mosasaurus. See Illust. in Appendix.
n.
A genus of extinct marine reptiles allied to the lizards, but having the body much elongated, and the limbs in the form of paddles. The first known species, nearly fifty feet in length, was discovered in Cretaceous beds near Maestricht, in the Netherlands.
n.
Same as Mosasauria.
n.
One of an extinct order of reptiles, including Mosasaurus and allied genera. See Mosasauria.
n.
Same as Mosasaurus.