Ancient species are those which have evolved billion years ago or earlier. While life on Earth was still on bacterial level, these species were already wandering through the cosmos; nowadays some are extinct while others remain.
In a more objective and less anthropocentric definition, ancient species might perhaps be defined as the product of the first and second generations of stars in our Universe (our sun is a third generation star). Some of these, however, may be even older than that.
This category has the following 3 subcategories, out of 3 total.
Pages in category "Ancient Species"
The following 145 pages are in this category, out of 145 total.