Kingdom Animalia
Phylum Chordata
Superclass Tetrapoda
Class Reptilia
Subclass Diapsida
Superorder Dinosauria
Order Saurischia
Suborder Theropoda
Superfamily Abelisauroidea
Family Abelisauridae
Subfamily Carnotaurinae
Genus Pycnonemosaurus
1st Species Pycnonemosaurus nevesi
Other attributes
Time Range 71-70 mya
Location Brazil
Name Meaning Thick forest reptile
Physical Dimensions 8.9 meters long
Weight 3 tonnes
Dietary Classification Carnivore

Comparison of the only known specimen of P.nevesi with an 1.8 meter tall human. Click to expand.

Pycnonemosaurus is an abelisaurid theropod dinosaur from the Late Cretaceous of Brazil. It was named in 2002 by Alexander Kellner and Diogenes de Almeida Campos. It was one of the largest abelisaurids to walk the Earth, only beaten in size by 2 unnamed genera related to it.


Pycnonemosaurus was a giant theropod with a bulky body, a moderately long tail, extremely short (almost non-existant) arms with 4 clawless fingers on each hand, and a mid-sized head with a mouth containing lots of small teeth. Its body would have been covered in scaly skin.


Pycnonemosaurus was a predator, preying on mid-sized sauropods, small crocodylomorphs, and dromaeosaurs. Its teeth were small yet sharp, and were used to get a hold of struggling prey as the abelisaur shook and tore them apart.


Not much is known about Pycnonemosaurus.

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