The most recent fossil, from Edmonton, dates to 11,355 55 years ago.

These conifers show up in fossils dating back 360 million years.

It is an ancient group, with fossils dating from 530 million years ago, in the Cambrian period.

Excavations since 2000 have revealed a wealth of fossils dating from a period some 165 to 155 million years ago.

Their skeletons are similar to those of fossils dating back to the Eocene, up to 50 million years ago.

Other species and genera are only known from fossils dating back to the Paleogene.

Earliest fossils dated from 428-410 million years old.

There are four extant species, but the genus is also known from fossils dating back to the Oligocene epoch.

Lightning Ridge is an important paleontological site, with fossils dating back to the Cretaceous period, 110 million years ago.

With fossils dating back to 205-210 million years ago (mya), it is the oldest known neo theropod.