It is Silurian in age.
Don’t know
Devonian
silurian
Age of mammals
It measures the age of a fossil.:)
Phacops
bla
Devonian
silurian
Tug Hill Plateau and St. Lawrence Lowlands
Syracuse
pedo
Period- Silurian Epoch- Late 416m/Early 444million years ago Life on Earth- Earliest insects, Earliest land, plants, and animals. Abundant eurypterids
R. P. Volkmann has written: 'Preliminary bedrock geologic map, Holliston quadrangle'
Geologic column is an ordered arrangement of rock layers that is based on the relative age of the rocks. Geologic time is the time IN the geologic column.
Ice Age Floods National Geologic Trail was created in 2009.
Age of mammals
The geologic age of fossil organisms, rock, or geologic features or events defined relative of each other.