Trilobites
Order Proetida Family Proetidae
Geologic Age: Middle Devonian
Trilobite
is 24 mm long
Jorf, Morocco
Comment: This Gerastos proetid trilobite has greatly reduced eye size
compared to the typical
member of family Proetidae. Another Gerastos
trilobite from the same location in Jorf was blind
with no eyes -- could
this one be the evolutionary transitional form?
Also see:
Moroccan Trilobites Evolutionary
Secondary Blindness Among Trilobites Trilobite Eyes
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