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Triarthrus

TRIARTHRUS
The external skeleton of this trilobite is more than twice as long as it is wide. It has a large head and a small tail shield. There are no genal spines, but two pairs of deep furrows are visible on the glabella.

Habitat: Triarthrus lived on or close to the sea bed. Remark: This specimen is one of the rare examples in which the limbs of the trilobite are preserved - the traces of the walking legs may be clearly seen. These were preserved because they were covered at an early stage by a film of iron pyrites, which remains even after the soft tissue has decayed.
© 1992 Cyril Walker, David Ward .