Knowtex

Web site of Jay Matternes, Artist naturalist.

Farish Jenkins, paleontologist and polymath, died on November 11th aged 72

A tyrannosaur skeleton has been sold for $1 million – but it's a dinosaur that has never been found outside Mongolia, where exporting fossils is illegal

Sauropod from the Jurassic period. The head in this drawing is too big...

Lystrosaurus is dycinodont therapsid that lived from the late Permian to the early Triassic Period.

Dubreuillosaurus is a megalosaurid theropod. It lived in the middle Jurassic Period.

Streptospondylus is a Theropod that lived during the Jurassic Period.

Sea reptile (Mosasauridae) that lived during the Cretaceous Period.

The evolution of life and landscapes happens over vast amounts of time. To understand the scale of time for these changes, we look for evidence in layers of rock. Events like volcanic eruptions, animal extinctions, sediment deposition and ice ages leave traces in layers of rock worldwide.

Birds and other dinosaurs painting by Matt Martyniuk.