Centuries: 17th century - 18th century - 19th century
Decades: 1670s 1680s 1690s 1700s 1710s - 1720s - 1730s 1740s 1750s 1760s 1770s
Years: 1716 1717 1718 1719 1720 - 1721 - 1722 1723 1724 1725 1726
... on the fossil record, evidence of their existence preserved in rocks.
This includes the study of body fossils, tracks, burrows, cast off parts, fossilized feces, and ...
Kids.Net.Au - kids safe portal for children, parents, schools and