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Tylosaurus

Extinct genus of squamates

Species / taxonfossil taxonQ131460

Scientific name: Tylosaurus
Rank: genus
Parent taxon: Tylosaurinae
Length: 14 m

Overview

From Wikipedia, the free encyclopedia · Read full article · Text CC BY-SA 4.0

Tylosaurus is a genus of russellosaurine mosasaur that lived about 92 to 66 million years ago during the Turonian to Maastrichtian stages of the Late Cretaceous. The genus contains at least ten validly named species, the largest of which, T. rex, estimated to have reached over 13 meters (43 ft) long and weighed nearly 8.4 tonnes (19,000 lb). Its fossils have been found primarily around North Atlantic Ocean including in North America, Europe, and Africa.

Overview

All data

19 statements · 26% with external sources · numbers in brackets are citations

Started: 86500th millennium BCE
Ended: 75000th millennium BCE
Named after: protuberance
Location of discovery: Niobrara Formation
Time period: Late Cretaceous

On other databases

9 identifiers linking Tylosaurus across the web's reference databases

Data quality

statements

26%

externally sourced

Source last edited August 5, 2026. AIDb refreshes this page daily.

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AIDb. (2026). Tylosaurus (Q131460). Retrieved from https://aidb.si/e/tylosaurus-Q131460