English

An illustration from the 11th Edition of Encyclopædia Britannica showing five stages in the life cycle of the trilobite Sao hirsuta

A fossil of the trilobite Phacops rana

Noun

protaspis ‎(plural protaspides)

1. (paleontology) A stage in the development of a trilobite where the creature has not yet developed articulated segments.

Derived terms

See also

• holaspis
• meraspis

References

• S. M. Gon III (8 November 2007), “Trilobite Reproduction and Development”, in Trilobites.info, archived from the original on 26 April 2016.