System Series Stage Age (Ma)
Cretaceous Lower Berriasian younger
Jurassic Late Jurassic Tithonian 145.5–150.8
Kimmeridgian 150.8–155.7
Oxfordian 155.7–161.2
Middle Callovian 161.2–164.7
Bathonian 164.7–167.7
Bajocian 167.7–171.6
Aalenian 171.6–175.6
Lower Toarcian 175.6–183.0
Pliensbachian 183.0–189.6
Sinemurian 189.6–196.5
Hettangian 196.5–199.6
Triassic Upper Rhaetian older
Supersaurus vs. Torvosaurus

A Late Jurassic scene in North America: The megalosaurid megalosauroid theropod Torvosaurus attacks the apatosaurine diplodocoid sauropod Supersaurus.

The Late Jurassic epoch, which started 161.2 million years ago and ended 145.5 million years ago is a time in Earth's history when the main predators were the newly-evolved carnosaurian theropods. At this time tyrannosaurs never got any larger than 10 feet (3 meters) long. The main herbivores in this environment were the plate-backed stegosaurians and the long-necked and gigantic sauropods. The diplodocoid sauropods were the ones that thrived the most. These include Diplodocus, Apatosaurus (formerly called "Brontosaurus") and Supersaurus (see left).

Late Jurassic

What the Late Jurassic looked like

It is believed, by some, that the asteroid 298 Baptistina may of played a role in the J-K (Jurassic-Cretaceous) extinction [1].


  1. "Jurassic Fight Club" Episode 12: Armageddon