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Incredible species of T. rex discovered — a beast with skull-crushing jaws that lived underwater

Nypost · · 643 words · By Ben Cost
Paleontology Sensationalism
open_in_new Read the original article: https://nypost.com/2026/05/22/science/aquatic-species-of-t-rex-discovered-with-b…

psychologyDetected Techniques

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Loaded Language 90% confidence
Using words with strong emotional connotations to influence an audience.
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Exaggeration / Hyperbole 80% confidence
Overstating facts or claims to create a stronger emotional response.

fact_checkFact-Check Results

13 claims extracted and verified against multiple sources including cross-references, web search, and Wikipedia.

check_circle Corroborated 5
schedule Pending 3
info Single Source 2
help Insufficient Evidence 2
verified Verified By Reference 1
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“scientists have discovered a giant, bus-size sea predator that they’re calling it the T. rex of the sea, according to a study in the journal Bulletin of the American Museum of Natural History”
CORROBORATED
Multiple independent web sources confirm that researchers announced a new sea predator dubbed the 'T. rex of the sea' in a study published in the Bulletin of the American Museum of Natural History.
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wikipedia NEUTRAL — The American Museum of Natural History (AMNH) is a natural history museum on the Upper West Side of Manhattan in New York City. Located in Theodore Roosevelt Park, across the street from Central Park,…
https://en.wikipedia.org/wiki/American_Museum_of_Natural_His…
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wikipedia NEUTRAL — The Bulletin of the American Museum of Natural History is a peer-reviewed scientific journal in the fields of zoology, paleontology, and geology. It is part of a group of journals published by the Ame…
https://en.wikipedia.org/wiki/Bulletin_of_the_American_Museu…
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wikipedia NEUTRAL — The Carnegie Museum of Natural History (abbreviated as CMNH) is a natural history museum in the Oakland neighborhood of Pittsburgh, Pennsylvania. It was founded by Pittsburgh-based industrialist Andre…
https://en.wikipedia.org/wiki/Carnegie_Museum_of_Natural_His…
+ 3 more evidence sources
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“Dubbed Tylosaurus Rex — or “King of the Tylosaurs” — this aquatic nightmare is a type of mosasaur”
CORROBORATED
Multiple sources, including National Geographic and Phys, confirm the species is named Tylosaurus rex (or T. rex) and is a type of mosasaur.
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web search NEUTRAL — If you said “T. rex,” you’d be correct! Paleontologists have discovered an enormous new species of Tylosaurus, a sea lizard belonging to the mosasaur family. Measuring up to 43 feet long—the size of a…
https://www.nationalgeographic.com/science/article/tylosauru…
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web search NEUTRAL — One of the largest mosasaurs known to date—stretching up to 43 feet long—this top predator was described from 80-million-year-old fossils that were found primarily in northern Texas decades ago. It wa…
https://www.eurekalert.org/news-releases/1129235
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web search NEUTRAL — The species, called Tylosaurus rex, is a mosasaur, or a marine reptile that lived alongside dinosaurs. This “T. rex of the sea” ranged from approximately 25 to 45 feet long and was one of the later ki…
https://www.dallasnews.com/news/article/perot-museum-new-spe…
+ 1 more evidence source
verified
“The marine reptiles roamed the ocean during the Cretaceous Period, 66 million to 145 million years ago”
VERIFIED BY REFERENCE
Wikipedia and Britannica both confirm that mosasaurs lived during the Cretaceous Period, specifically citing the range from approximately 145 to 66 million years ago.
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wikipedia NEUTRAL — The Cretaceous (IPA: krih-TAY-shəss) is the geological period that lasted from about 143.1 to 66 Ma (million years ago). It is the third and final period of the Mesozoic Era, as well as the longest. …
https://en.wikipedia.org/wiki/Cretaceous
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wikipedia NEUTRAL — Mosasaurus (; "lizard of the Meuse River") is the type genus (defining example) of the Mosasauridae, an extinct group of aquatic squamate reptiles. It lived from about 82 to 66 million years ago durin…
https://en.wikipedia.org/wiki/Mosasaurus
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wikipedia NEUTRAL — The Phanerozoic is the current and the latest of the four geologic eons in the Earth's geologic time scale, covering the time period from 538.8 ± 0.6 million years ago to the present. It is the eon d…
https://en.wikipedia.org/wiki/Phanerozoic
+ 3 more evidence sources
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“this particular beast, which was described from 80 million-year-old fossils found in Texas”
CORROBORATED
Multiple web sources state that the species was described from 80-million-year-old fossils found in northern Texas.
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wikipedia NEUTRAL — Dallas is a city in the U.S. state of Texas. Located in the state's northern region, it is the ninth-most populous city in the United States and third-most populous city in Texas, with a population of…
https://en.wikipedia.org/wiki/Dallas
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wikipedia NEUTRAL — Interstate 20 (I-20) is a major east–west Interstate Highway in Texas, running east from a junction with I-10 east of Kent, Texas, through the Dallas–Fort Worth metroplex to the Louisiana state line n…
https://en.wikipedia.org/wiki/Interstate_20_in_Texas
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wikipedia NEUTRAL — The following tables give an overview of notable finds of homini fossils and remains relating to human evolution, beginning with the formation of the tribe Hominini (the divergence of the human and ch…
https://en.wikipedia.org/wiki/List_of_human_evolution_fossil…
+ 3 more evidence sources
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“It measured a whopping 43 feet long”
CORROBORATED
Multiple sources, including Live Science and National Geographic, explicitly state the creature measured up to 43 feet long.
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wikipedia NEUTRAL — Fossil reptile research published in 2026 includes peer-reviewed publications on discoveries related to reptile paleontology, as well as the description of new taxa.
https://en.wikipedia.org/wiki/2026_in_reptile_paleontology
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wikipedia NEUTRAL — The Academy of Natural Sciences of Drexel University, formerly the Academy of Natural Sciences of Philadelphia, is the oldest natural science research institution and museum in the Americas. It was fo…
https://en.wikipedia.org/wiki/Academy_of_Natural_Sciences_of…
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wikipedia NEUTRAL — Tylosaurus (; "knob lizard") is a genus of russellosaurine mosasaur (an extinct group of predatory marine lizards) that lived about 92 to 66 million years ago during the Turonian to Maastrichtian stag…
https://en.wikipedia.org/wiki/Tylosaurus
+ 3 more evidence sources
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“Amelia Zietlow of the American Museum of Natural History in New York City [is the study’s head author]”
CORROBORATED
Multiple sources, including Phys and news reports, identify Amelia Zietlow as the lead author of the study and a research associate at the American Museum of Natural History.
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wikipedia NEUTRAL — Tylosaurus (; "knob lizard") is a genus of russellosaurine mosasaur (an extinct group of predatory marine lizards) that lived about 92 to 66 million years ago during the Turonian to Maastrichtian stag…
https://en.wikipedia.org/wiki/Tylosaurus
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wikipedia NEUTRAL — The Wolfe City Formation is a geologic formation in Texas. It preserves fossils dating back to the Cretaceous period.
https://en.wikipedia.org/wiki/Wolfe_City_Formation
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wikipedia NEUTRAL — Jormungandr is an extinct genus of mosasaurid squamates from the early Campanian Pierre Shale of North Dakota, United States. The genus contains a single species, J. walhallaensis, known from a nearly…
https://en.wikipedia.org/wiki/Jormungandr_walhallaensis
+ 4 more evidence sources
info
“Zietlow came across a fossil in their collection that had seemingly been mislabeled as Tylosaurus proriger — a 30-foot mosasaur species that was first described in 1869”
SINGLE SOURCE
While the existence of Tylosaurus is verified, the specific detail about Zietlow finding a mislabeled fossil of T. proriger described in 1869 is not explicitly corroborated across the provided evidence snippets, though it aligns with the context of the study.
travel_explore
web search NEUTRAL — Tylosaurus (/ ˌtaɪˈloʊˈsɔːrəs /; "knob lizard") is a genus of russellosaurine mosasaur (an extinct group of predatory marine lizards) that lived about 92 to 66 million years ago during the Turonian to…
https://en.wikipedia.org/wiki/Tylosaurus
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web search NEUTRAL — 14 hours ago · Tylosaurus rex was a 43-foot apex predator that ruled the shallow seas covering what is now Texas approximately 80 million years ago. The animal had finely serrated teeth, exceptionally…
https://spacedaily.com/d-a-new-species-of-mosasaur-named-tyl…
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web search NEUTRAL — 1 day ago · A Gigantic New Species of Tylosaurus (Squamata: Mosasauridae) from Texas, and a Revised Character List for Phylogenetic Analyses of Mosasauridae, Bulletin of the American Museum of Natural…
https://phys.org/news/2026-05-ancient-seas-rex-massive-mosas…
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“the fossil — discovered outside Dallas in 1979, along with dozens of others”
SINGLE SOURCE
The provided evidence does not explicitly confirm the 1979 Dallas discovery date for these specific fossils; the web results for claim 7 are unrelated to the mosasaur.
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web search NEUTRAL — Jenguebi, where the fossils were discovered, is a remote Sahara locality, with fossil-rich sandstone outcrops surrounded by sand dunes.
https://www.aol.com/articles/fossils-species-huge-dinosaur-s…
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web search NEUTRAL — Scientists discovered that the fish’s brain cavity contained mineralized remains of neural tissue, providing unprecedented insights into prehistoric fish intelligence and behavior. This level of prese…
https://discoverwildscience.com/this-fossilized-fish-was-tho…
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web search NEUTRAL — Common Name: Olsen’s Alligator. Adult Alligator olseni specimens are generally smaller than adult Alligator mississippiensis specimens, with few individuals exceeding more than seven to eight feet in …
https://www.floridamuseum.ufl.edu/florida-vertebrate-fossils…
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“all of them were found in northern Texas, sported serrated teeth uncharacteristic of other mosasaurs, and measured 13 feet longer than T. proriger”
INSUFFICIENT EVIDENCE
No evidence was found in the provided search results to confirm the specific detail about serrated teeth and the exact 13-foot length difference compared to T. proriger.
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“they are about 4 million years younger than their brethren, whose remnants dated back to around 84 million years ago”
INSUFFICIENT EVIDENCE
No evidence was found in the provided search results to confirm the specific 4-million-year age difference between this species and its brethren.
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“Ron Tyloski, a curator of the Perot Museum in Dallas [is a study author]”
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“One of the specimens at the institution is reportedly missing the tip of its nose and has a broken jaw”
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“the name is a tribute to Texas paleontologist John Thurmond, who, in the 1960s, first recognized that the large Tylosaurs from Northern Texas might be an entirely new species. He named them “Tylosaurus thalassotyrannus””
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info Disclaimer: This analysis is generated by AI and should be used as a starting point for critical thinking, not as definitive truth. Claims are verified against publicly available sources. Always consult the original article and additional sources for complete context.