There's a new T. rex from the dinosaur age — and it ruled the seas with a skull-crushing bite
A new species of mosasaur, Tylosaurus rex, has been identified as a formidable marine predator from the dinosaur age. This species, measuring up to 43 feet long, was discovered in fossils primarily found in northern Texas. The findings highlight the importance of re-evaluating previously misidentified specimens in paleontological collections.
- ▪Tylosaurus rex is a newly described species of mosasaur that lived during the Cretaceous period.
- ▪The species name means 'king of the tylosaurs' and it can grow up to 43 feet long.
- ▪Fossils of T. rex were mostly discovered in northern Texas and date back about 80 million years.
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| Original publisher | Live Science |
| Canonical URL | https://www.livescience.com/animals/extinct-species/theres-a-new-t-rex-from-the-dinosaur-age-and-it-ruled-the-seas-with-a-skull-crushing-bite |
| Publication time | Thu, 21 May 2026 20:13:35 +0000 |
| Retrieval time | 2026-05-21T20:21:35.705Z |
| Last seen | 2026-05-21T20:21:35.705Z |
| Headline source | Publisher (no WeSearch rewrite) |
| Excerpt source | publisher body |
| Excerpt method | First ~120 words (~800 chars) of extracted publisher body, fair-use limited. |
| Summary | WeSearch · cerebras-chat (WeSearch summarizer) |
| Summary source text | contentText |
| Citation coverage | Summary is a WeSearch-generated derivative; primary citation is the original publisher URL. |
| Cluster | uZaQY2XTT2vD |
| Cluster logic | Grouped by semantic title/content similarity across sources within a rolling window. Same-publisher template collisions are excluded from coverage comparison. |
| Ranking reason | Story pages are not engagement-ranked. Hub feeds use recency, with optional source-diversified chronological ordering (cap consecutive stories per source). No personalized ranking. |
| Publisher visit | Yes — open original |
| Substitutes article? | No — link-out required for full text |
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| Indexing | May the item be indexed (stored, ranked, made findable)? | Allowed |
| Snippet | May a short excerpt of the publisher's text be shown? | Allowed |
| AI summary | May WeSearch generate its own short summary of the article? | Limited |
| Retrieval / RAG | May the content be exposed for third-party retrieval-augmented generation? | Not asserted |
| Model training | May the content be used to train AI models? | Not asserted |
| Commercial reuse | May the content be reused commercially? | Not permitted |
Basis: Derived from the published RSS/Atom feed. Contact: [email protected]. Reviewed: 2026-07-24.
Opening excerpt (first ~120 words) tap to expand
Animals Extinct species There's a new T. rex from the dinosaur age — and it ruled the seas with a skull-crushing bite The newly described mosasaur Tylosaurus rex spanned up to 43 feet (13 meters) long and may have been one of the fiercest marine predators of the dinosaur age. By Kenna Hughes-Castleberry published 21 May 2026 in News When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. An artist's reconstruction of Tylosaurus rex swimming in the Cretaceous seas of North America. (Image credit: Courtesy of Alderon Games/Path of Titans) Copy link Facebook X Reddit Pinterest Flipboard Share this article 0 Join the conversation Follow us Add us as a preferred source on Google Newsletter Subscribe to our newsletter There's a new T.
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