Earth Science, Geologic Time & Fossils

Platycrinites

fossil echinoderm genus

Alfisol

soil type

Protonosphere

atmospheric science

Dew Point

meteorology

Sederholm, Jakob Johannes

Finnish geologist

Triassic Period

Plants, Animals, Major Events, & Facts

Hygrometer

meteorological instrument

Radiosonde

instrument

Blizzard

meteorology

Polar Anticyclone

meteorology

Scaphites

fossil cephalopod genus

Basilosaurid

fossil mammal

Helland-Hansen, Bjørn

Norwegian oceanographer

Archosaurus

fossil reptile genus

Hail

meteorology

Mud Volcano