Genus Protostephanus Cockerell, 1906 [Extinct]
Head in frontal view. Picture by A. P. Aguiar.
Interpretation:
1. Head badly broken, with anterior part displaced to the right (your left)
2. Prosternum as large triangular area centrally on lower 2/5 of the picture;
3. The rugose/strigose area correspond to the frons (which is broken off, and
displaced)
4. Anterior tubercle seen on top of frons (note its sinuose left edge);
4. Left compound eye (your rigth) seen as a weak semicircular impression.
NOTE: This is the holotype of P. ashmeadi Cockerell, from the shales of
Florissant (Colorado, USA). The condition of the specimen is
very bad, and some features in this picture have been enhanced by especial
photographic techniques and image processing in a computer.
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This page last updated: January 15, 1999.
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| Alexandre Pires Aguiar |