Cretaceous

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Fossil of Giant Squid-Like Creature from Cretaceous Period Bears Marks of Deadly Attack

Paleontologists studying a fossil unearthed in southern Manitoba, Canada, have identified what they believe are two bite marks on the internal skeleton of the ancient giant cephalopod Enchoteuthis. The post Fossil of Giant Squid-Like Creature from Cretaceous Period Bears Marks of Deadly Attack appeared first on Sci.News: Breaking Science News.

01/09/2026 sci-news

Arundelconodon: Beast of the Week

 This week we will be looking at a unique mammal that lived alongside some of the largest dinosaurs!  Check out Arundelconodon hottoni.  Arundelconodon was a small mammal that lived in what is now Maryland, in the United States, during the early Cretaceous Period, about 115 million years ago, making it one of the oldest known mammals from the east coast of the US.  It is estimated to have measured about eight to ten inches (20-25cm) long from nose to tail, roughly the same size as a rat.  Based

31/08/2026 prehistoricbeastoftheweek

Amazing Armoured Dinosaur Discovery – Japan’s First Definitive Ankylosaur

A new genus and species of armoured dinosaur has been named from fossils found in Japan. Nipponopelta yezoensis represents the first formally named Japanese ankylosaur. Furthermore, this discovery provides important information about the dispersal of nodosaurids during the Cretaceous Period. The new dinosaur was named and described by an international team of palaeontologists. The research

30/08/2026 everythingdinosaur

Fossil of Small Duck-Billed Dinosaur Relative Found in Japan

A fossilized bone unearthed two decades ago in northeastern Japan belongs to one of the smallest iguanodontian dinosaurs ever found in the country’s Cretaceous marine rocks, according to new research led by the University of Tsukuba. The post Fossil of Small Duck-Billed Dinosaur Relative Found in Japan appeared first on Sci.News: Breaking Science News.

20/08/2026 sci-news

A 30-year-old fossil was hiding bones from a mysterious ancient sea monster

Fossils collected in Osaka more than 30 years ago have revealed a surprise hiding in plain sight: four previously unrecognized bones from a giant Cretaceous mosasaur. Among them is the first confirmed premaxilla—the frontmost bone of the upper jaw—ever identified in a Japanese mosasaur fossil. Even more intriguing, parts of the skull show unusual anatomical features that don’t match known mosasaurs, raising the possibility that the remains belong to an entirely new species.

15/08/2026 sciencedaily

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Mesozoic Era

Early Cretaceous

143.1000 – 100.5000

Late Cretaceous

100.5000 – 66.0000