Over approximately 2.5 million years, North America likely hosted 2.5 billion Tyrannosaurus rexes, a minuscule proportion of which have been dug up and studied by paleontologists, according to a UC Berkeley study. (Image by Julius Csotonyi, courtesy of Science magazine)

How many T. rexes were there? Billions

The world's smallest stegosaur footprint (less than 6 cm long), Xingjiang, China. Photo credit - Lida Xing.

Tiny cat-sized stegosaur leaves its mark

Skeletons of four tyrannosaurid specimens tested in the study. Clockwise from above left: adult Tyrannosaurus rex “Sue” (FMNH PR 2081) (Field Museum of Natural History, Chicago, IL; photo by the Field Museum), juvenile Tyrannosaurus rex “Jane” (BMRP 2002.4.1) (Burpee Museum of Natural History; photo by A. Rowe), adult Tarbosaurus bataar (Dinosaurium exhibition, Prague, Czech Republic; photo by R. Holiš) and Raptorex kriegsteini skeletal reconstruction (LH PV18) (Long Hao Institute of Geology and Paleontology, Hohhot, Inner Mongolia, China; photo by P. Sereno). Credit: Listed in caption. Final image by Andre Rowe

Younger Tyrannosaurus Rex bites were less ferocious than their adult counterparts

The asteroid impact led to the extinction of 75% of life, including all non-avian dinosaurs. Credit: Willgard Krause/Pixabay.

Asteroid dust found in crater closes case of dinosaur extinction

Comet

The comet that killed the dinosaurs

Life reconstruction of a Spinosaurus wading in the water and fishing. Credit: Robert Nicholls ©Nicholls2020

New light shed on behavior of giant carnivorous dinosaur Spinosaurus

Researcher overlooking one of the two field sites for the study, the Frenchman Valley in Chambery Coulee Saskatchewan in July 2017. Credit: McGill University

When dinosaurs disappeared, forests thrived

Ubirajara jubatus is named after a Tupi Indian name for 'lord of the spear', in reference to the creature's stiffened, elongate integumentary structures, and jubatus from the Latin meaning 'maned' or 'crested'. Image must be credited Credit: Artwork © Bob Nicholls / Paleocreations.com 2020

New dinosaur showed descendants how to dress to impress

Braincase and endocast of Thecodontosaurus antiquus. From CT scans of the braincase fossil, 3-D models of the braincase and the endocast were generated and studied. Credit: Created by Antonio Ballell with BioRender, Thecodontosaurus silhouette from PhyloPic.org.

Research reveals unexpected insights into early dinosaur’s brain, eating habits and...

A partial skeleton of Lagerpeton (hips, leg, and vertebrae) from ~235 million years from Argentina. Further examination of this specimen helped tie features of lagerpetids to pterosaurs. Photo courtesy of Sterling Nesbitt. Credit: Virginia Tech

Paleontologists find pterosaur precursors that fill a gap in early evolutionary...

Remnants of feather sheaths on the wings of the fossil bird Archaeopteryx, shows the earliest evidence of a complex moulting strategy. The white arrows indicate the feather sheaths. Scale bar is 1 cm. Credit: Kaye et al. 2020.

Archaeopteryx fossil provides insights into the origins of flight

Illustration of the Jurassic thyreophoran Scelidosaurus harrisonii, Jack Mayer Wood, CC BY-SA 4.0, via Wikimedia Commons

Only dinosaurs found in ireland described for the first time

Pterosaurs with these types of beaks are better known at the time period from North Africa, so it would be reasonable to assume a likeness to the North African Alanqa. Credit: Attributed to Davide Bonadonna

Fossil shark turns into mystery pterosaur

Titanosaurs were common at the time of the asteroid hit at the end of the Cretaceous 66 million years ago. (Credit: AlienCat)

New analysis refutes claim that dinosaurs were in decline before asteroid...

Buriolestes schultzi brain. Credit: Márcio L. Castro

Researchers reconstruct the first complete brain of one of the oldest...

This illustration shows a reconstruction of Ambopteryx in a glide. Credit: Gabriel Ugueto

These two bird-sized dinosaurs evolved the ability to glide, but weren’t...

Teeth of a large dinosaur, possibly Metriacanthosauridae, from the Liuhuanggou site in the southern Junggar basin. Scale: 1 cm. Credit: University of Tübingen

Tooth marks and lost teeth offer insights into dinosaur feeding behavior

An artist's impression of Leptostomia begaaensis Credit: Megan Jacobs, University of Portsmouth

Beak bone reveals pterosaur like no other

Naked prehistoric monsters

Evidence that prehistoric flying reptiles probably had feathers refuted

Artist's impression of Oksoko avarsan dinosaurs (credit: Michael Skrepnick)

Lost digits point to spread of parrot-like dinosaur

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