Definitions from Wikipedia (First appearance datum)

▸ noun:  a term used by geologists and paleontologists to designate the first appearance of a species in the geologic record.


▸ Words similar to first appearance datum
▸ Usage examples for first appearance datum

▸ Idioms related to first appearance datum
▸ Wikipedia articles (New!)
▸ Words that often appear near first appearance datum
▸ Rhymes of first appearance datum

▸ Invented words related to first appearance datum