Name:
Archimedes
Meaning: After
Archimedes.
inventor of the
screw device for
lifting water.
Grouping:
Bryozoan,
Fenestrid. Fenestellid.
Informal ID: Archimedes
screw, screw bryozoan.
Fossil size: Specimens
about 3cm/1 in long.
Reconstructed size: Length
up to 50cm/20in
Habitat: Calm, sheltered
marine environments.
Time span Carboniferous to
Permian, 350-270 million
years ago.
Main fossil sites: Worldwide.
Occurrence: + +