Which of the following is an essential characteristic of an index fossil?
A) The organism lived in a very specific environment or two, such as tropical volcanic islands.
B) The organism lived for a very limited period of geologic time.
C) The fossils of the organism are exceptionally well preserved.
D) The organism lived on the land, not in the ocean.
Question 2
Using the known rates of radioactive decay to date the crystallization of certain minerals is known as ________ dating.
A) conventional
B) radiometric
C) relative
D) fossil assemblage
Fossil and modern stromatolites: evidence of autotrophic cyanobacteria.
Orcinus citoniensis fossil, an extinct species of the same genus, Museo Capellini di Bologna
Eryma mandelslohi, a fossil decapod from the Jurassic of Bissingen an der Teck, Germany
The Importance in the World Fossil Fuel Economy
Daily Essential Nutrients
Pulegone, a cyclic monoterpene, can be isolated from the essential oil of pennyroyal, a member ...