Mosasaurs

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• Mosasaurs are believed to have evolved from aigialosaurs, which were semi-aquatic lizards that lived during the early Cretaceous period, and who are believed to be related to monitor lizards.
  
  
• In 1869, Edward D. Cope suggested that Mosasaurs and snakes share a common marine ancestor. This idea was based on the similarities observed in Mosasaur and snake jaws, the reduced limbs, and the fact that Mosasaurs may have moved in a similar way to snakes. In the 1990s, the discovery of fossils of early snakes with vestigial limbs in marine sediments seemed to provide support for this hypothesis. However, more recently, other early snake fossils have been found, and since these show animals with hind limbs and an apparently burrowing lifestyle, some doubt has been cast on the idea that Mosasaurs and snakes shared a common ancestor.

Fossil Mosasaur, Pachypleurosaurus Gezobitomenzone, Lower Triassic Photographic Print
Dennis, David M.
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Mosasaurs Timeline:

Mosasaurs were marine reptiles that lived between 96 and 65 million years ago

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• Prehistoric Animals - Prehistoric and Extinct Animals

Mosasaur Pictures and Posters

Fossil Mosasaur, Pachypleurosaurus Gezobitomenzone, Lower Triassic 16" X 12" Photographic Print Artist: David M. Dennis.	Mosasaur Fossil (Keichousaurus Hui), Triassic Period, China 16" X 12" Photographic Print Artist: Ken Lucas.	People Excavate the Spine of an Extinct Mosasaur on a Prairie Pasture 12" X 16" Photographic Print Artist: Jack Fletcher.
Fossil Mosasaur, Pachypleurosaurus Gezobitomenzone, Lower Triassic 21.6875" X 17.6875" Framed Art Print Artist: David M. Dennis.	Fossil Mosasaur, Pachypleurosaurus Gezobitomenzone, Lower Triassic 30.625" X 24.625" Framed Art Print Artist: David M. Dennis.	Fossil Mosasaur, Pachypleurosaurus Gezobitomenzone, Lower Triassic 38.875" X 30.875" Framed Art Print Artist: David M. Dennis.

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Mosasaur Books

Mosasaur, the Return: Book Two of the Mosasaur Series By David D. Holt AuthorHouse Paperback (352 pages) List Price: $17.99* Lowest New Price: $16.19* Lowest Used Price: $17.99* Usually ships in 24 hours* *(As of 11:29 Pacific 2 Sep 2010 More Info) Click Here Product Description: James King is back, in this sequel that pits man against beast-again. Flashback: the year is 1973 and the W.A.R facility has deposited highly toxic and radioactive waste on a secret base in central Florida. From the 1960's thru the 1980's, another top secret genetic research facility near Welaka releases hundreds of test subjects into the wild near the toxic dumping ground. Since 1973, strange wildlife attacks upon humans have taken place; but suddenly stopped in the year 1992 when the first live Mosasaur appeared through a large sink hole and after seven grueling days of death, that first Mosasaur was exterminated but not before leaving something behind-a brood of seven vicious hungry pups! Eight years have passed and no more attacks upon humans have taken place since that horrible week in 1992, and now only three of the Mosasaur brood remains as they forage for food. The food that they've consumed during the past eight years has been contaminated with toxic and radioactive residues, accelerating their growth rate. Then the attacks begin, first with two fishermen, then a party boat full of people and next three escaped prisoners; the number of dead continue to increase as Putnam County is once again locked down with the US Army, National Guard and countless Law Enforcement officers in a desperate search and destroy mission. John Jason Robards, the eccentric millionaire and fossil collector is back with a vengeance as he maneuvers his childhood friend the Governor into a plot to capture the killer Mosasaur, for Robards has secretly built a massive habitat to hold the vicious predator. Mr. Robards entices Dr. King into running the facility and thus giving Dr. King full access to the Mosasaur, but only if they can catch it in time before it's too late.

Mosasaurs: Mosasaur, List of Mosasaurs, Mosasaurus, Tylosaurus, Tylosaurinae, Plioplatecarpinae, Halisaurinae, Dallasaurus, Platecarpus Books LLC Paperback (144 pages) List Price: $19.99* Lowest New Price: $19.99* Lowest Used Price: $21.70* Usually ships in 24 hours* *(As of 11:29 Pacific 2 Sep 2010 More Info) Click Here Product Description: Purchase includes free access to book updates online and a free trial membership in the publisher's book club where you can select from more than a million books without charge. Chapters: Mosasaur, List of Mosasaurs, Mosasaurus, Tylosaurus, Tylosaurinae, Plioplatecarpinae, Halisaurinae, Dallasaurus, Platecarpus, Russellosaurus, Eonatator, Mosasaurinae, Globidens, Plotosaurus, Selmasaurus, Clidastes, Carinodens, Plioplatecarpus, Taniwhasaurus, Hainosaurus, Prognathodon, Liodon, Moanasaurus, Aigialosaurus, Halisaurus, Kourisodon, Igdamanosaurus, Plesiotylosaurus, Vallecillosaurus, Mosasauroidea, Tethysaurus, Yaguarasaurus, Eidolosaurus, Carsosaurus, Ectenosaurus, Komensaurus, Pontosaurus, Mesoleptos, Goronyosaurus, Angolasaurus, Pluridens, Haasiasaurus. Excerpt: Aigialosaurus Fossil range: Late Cretaceous item Synonyms item Opetiosaurus Kornhuber, 1901 Restoration of A. bucchichi Restoration of A. dalmaticus Aigialosaurus is an extinct genus of mosasauroid within the family Aigialosauridae . Its fossils have been found in Europe . It contains two species, Aigialosaurus dalmaticus and Aigialosaurus bucchichi . References (URLs online) A hyperlinked version of this chapter is at Angolasaurus Fossil range: Late Cretaceous Angolasaurus is an extinct genus of mosasaur . A hyperlinked version of this chapter is at Carinodens Fossil range: Late Cretaceous Carinodens (meaning 'keel teeth') is a genus of mosasaur . It was named in 1969 as a replacement for Compressidens , which was already in use for another animal. Measuring approximately 3.5 metres (11 ft) in length, it is one of the smallest known mosasaurs. It is widely considered a sister taxon to Globidens . It also had round, blunt teeth for crushing primitive clams and oysters. Most cranial elements have been found in The Netherlands . The only postcranial material was recovered from latest Maastrichtian deposits of Jordan . The new material, assigned to a new species of Carinodens by Kaddumi (2009), is represented...

Cretaceous Lizards: Mosasaur, Judeasaurus, Kaganaias, Xianglong, Estesia, Dalinghosaurus, Cretaceogekko, Palaeosaniwa, Gobiderma, Dolichosaurus Books LLC Paperback (54 pages) List Price: $14.14* Lowest New Price: $14.14* Lowest Used Price: $15.24* Usually ships in 24 hours* *(As of 11:29 Pacific 2 Sep 2010 More Info) Click Here Product Description: Purchase includes free access to book updates online and a free trial membership in the publisher's book club where you can select from more than a million books without charge. Chapters: Mosasaur, Judeasaurus, Kaganaias, Xianglong, Estesia, Dalinghosaurus, Cretaceogekko, Palaeosaniwa, Gobiderma, Dolichosaurus, Aigialosauridae, Gangiguana, Adriosaurus, Pristiguana, Mosasauroidea, Kuwajimalla, Yabeinosaurus. Excerpt: HalisaurinaeMosasaurinaePlioplatecarpinaeTylosaurinae Mosasaurs (from Latin Mosa meaning the 'Meuse river', and Greek sauros meaning 'lizard') were serpentine marine reptiles. The first fossil remains were discovered in a limestone quarry at Maastricht on the Meuse in 1764. These ferocious marine predators are now considered to be the closest relatives of snakes, due to cladistic analysis of symptomatic similarities in jaw and skull anatomies. Mosasaurs were not archosaurs but lepidosaurs, reptiles with overlapping scales. These predators evolved from semi-aquatic squamates known as the aigialosaurs, close relatives of modern-day monitor lizards, in the Early Cretaceous Period. During the last 20 million years of the Cretaceous Period (Turonian-Maastrichtian), with the extinction of the ichthyosaurs and pliosaurs, mosasaurs became the dominant marine predators. Plioplatecarpus primaevus skull Oxford University Museum of Natural History.Mosasaurs breathed air and were powerful swimmers that were well-adapted to living in the warm, shallow epicontinental seas prevalent during the Late Cretaceous Period. Mosasaurs were so well adapted to this environment that they gave birth to live young, rather than return to the shore to lay eggs, as sea turtles do. The smallest-known mosasaur was Carinodens belgicus, which was about 3.0 to 3.5 m long and probably lived in shallow waters near shore, cracking mollusks and sea urchins with its bulbous teeth. Larger mosasaurs were more typical: mosasaurs ranged in size up to 17 m. Ty... More: http://booksllc.net/?id=800373

Paleoenvironmental interpretations of rare earth element signatures in mosasaurs (reptilia) from the upper Cretaceous Pierre Shale, central South Dakota, ... Palaeoclimatology, Palaeoecology] By D. Patrick & D.C. Parris Elsevier Digital List Price: $5.95* Lowest New Price: $5.95* Available for download now* *(As of 11:29 Pacific 2 Sep 2010 More Info) Click Here Product Description: This digital document is a journal article from Palaeogeography, Palaeoclimatology, Palaeoecology, published by Elsevier in 2004. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser. Description: Rare earth elements were analyzed from fossil marine reptile (Mosasauridae) bones collected from five superposed members (Sharon Springs, Gregory, Crow Creek, DeGrey, and Verendrye) of the upper Cretaceous Pierre Shale at localities along the Missouri River in Brule, Buffalo, Hughes, and Hyde counties in central South Dakota. Fossil bones from each member of the Pierre Shale have different rare earth element (REE) signatures that may be distinctive over wide geographic areas. Fossils from the Sharon Springs Member have distinctive REE signatures that may be further subdivided into three superposed groups that correspond with the upper, middle, and lower Sharon Springs Member. REE signatures are distinctive from each stratigraphic unit; therefore, fossils eroded from their stratigraphic context may be assigned to their proper depositional unit based on REE signature comparisons. Differences in REE compositions of bones among members appear to result from differential mixing of oxygenated and anoxic seawaters. If differences in mixing are interpreted as depth differences, the lower Sharon Springs Member was deposited in deep, anoxic water; water depths decrease in the middle and upper Sharon Springs, and the overlying Gregory and Crow Creek Members were deposited in even more shallow water. Finally, according to this interpretation, the overlying DeGrey and Verendrye members were deposited in progressively deeper marine waters, but not as deep as the lower Sharon Springs. These interpretations are generally consistent with those based on faunal diversity and eustatic sea level curves.

Lizards: Lizard, Mosasaur, Chameleon, Skink, Oriental Garden Lizard, Polychrotidae, List of Lacertilia Families, San Esteban Chuckwalla Books LLC Paperback (214 pages) List Price: $14.14* Lowest New Price: $14.14* Lowest Used Price: $15.15* Usually ships in 24 hours* *(As of 11:29 Pacific 2 Sep 2010 More Info) Click Here Product Description: Purchase includes free access to book updates online and a free trial membership in the publisher's book club where you can select from more than a million books without charge. Chapters: Lizard, Mosasaur, Chameleon, Skink, Oriental Garden Lizard, Polychrotidae, List of Lacertilia Families, San Esteban Chuckwalla, Agamidae, Parietal Eye, Angel Island Chuckwalla, Draco Volans, Common Basilisk, Lacertidae, Judeasaurus, Kaganaias, Teiidae, Monte Cristo Arboreal Alligator Lizard, Gymnophthalmidae, Peninsular Chuckwalla, Curly-Tailed Lizards, Sauromalus Slevini, Anguidae, Estesia, Varanoidea, Corytophanidae, Night Lizard, Cordylidae, Pygopodidae, Dixonius, Dibamidae, Lanthanotidae, Xenosauridae, Varanidae, Hoplocercidae, Uma Scoparia, Palaeosaniwa, Gray's Water Skink, Northern Caiman Lizard, Gerrhosauridae, Opluridae, Tropiduridae, Peltosaurus, Dolichosaurus, Aigialosauridae, Western Basilisk, Scincomorpha, Adriosaurus, Viper Gecko, Mosasauroidea, Kuwajimalla, Holodactylus Africanus, Bavarisaurus, Scincinae, Aphanizocnemus, Blue-Spotted Wood Lizard, Hispaniolan Green Anole, Large-Headed Anole, Rhino Horn Lizard, Horned Wood Lizard, Helmeted Iguana, Anolis Distichus, Yabeinosaurus, Hispaniolan Curlytail Lizard, Leiosauridae, Rainbow Whiptail, Brazilian Spiny-Tailed Lizard, Liolaemidae, Florida Scrub Lizard, Sepsohis Punctatus, Ringed Spinytail Iguana, Island Glass Lizard, Giant Lizards. Excerpt: HalisaurinaeMosasaurinaePlioplatecarpinaeTylosaurinae Mosasaurs (from Latin Mosa meaning the 'Meuse river', and Greek sauros meaning 'lizard') were serpentine marine reptiles. The first fossil remains were discovered in a limestone quarry at Maastricht on the Meuse in 1764. These ferocious marine predators are now considered to be the closest relatives of snakes, due to cladistic analysis of symptomatic similarities in jaw and skull anatomies. Mosasaurs were not archosaurs but lepidosaurs, reptiles with overlapping scales. These predators e... More: http://booksllc.net/?id=800373

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