Trilobites
Order Redlichiida, Suborder Olenellina, Superfamily Olenelloidea,
Family Olenellidae, Subfamily Mesonacinae
Geologic Age: Lower Cambrian
Trilobite is 60 mm long
Eager Formation, Cranbrook, British Columbia, Canada
Remarks: Synonym is Olenellus eagerensis per Lieberman (1999B).
Like all trilobites from Suborder
Olenellina the genus Mesonacis has
no dorsal sutures. Also note the common trait of Superfamily
Olenelloidea members, where the large crecent-shaped eye ridges seem to come directly
from the back of the frontal lobe of the center
area of the glabella.
Also see: Canadian Trilobites
