Uploaded September 2019 | Updated September 2026, 2 weeks ago
Eldredgeops rana, Trilobite Fossil | #Geology #Trilobite #Fossil
Eldredgeops is a genus of trilobites in the order Phacopida, family Phacopidae, known from the late Middle and earliest Upper Devonian of Morocco and the USA.
Like in all sighted Phacopina, the eyes of Phacops are compounded of very large (0.5mm in Eldredgeops rana), separately set lenses without a common cornea (so called schizochroal eyes), and like almost all other Phacopina, the articulate mid-length part of the body (or thorax) in Eldredgeops has 11 segments.
Eldredgeops has a raised ridge along the ventral margin of the cephalon, the glabella is more inflated, the lateral parts of the preoccipital ring are rectangular (and not round), the palpebral area and palpebral lobe are larger than in P. latifrons, and there is no fold right behind the posterior vertical row of lenses nor an isolated raised area just below the lenses. Not all of these characteristics may differentiate among Eldredgeops and other Phacops species however.
Location: Hamilton group , New York , USA.
Age: Devonian era 380 million years old.
Video Copyright ©Tony Petropoulos
IG: Geology . life
geologypage.com
Eldredgeops rana, Trilobite Fossil | #Geology #Trilobite #Fossil
Eldredgeops is a genus of trilobites in the order Phacopida, family Phacopidae, known from the late Middle and earliest Upper Devonian of Morocco and the USA.
Like in all sighted Phacopina, the eyes of Phacops are compounded of very large (0.5mm in Eldredgeops rana), separately set lenses without a common cornea (so called schizochroal eyes), and like almost all other Phacopina, the articulate mid-length part of the body (or thorax) in Eldredgeops has 11 segments.
Eldredgeops has a raised ridge along the ventral margin of the cephalon, the glabella is more inflated, the lateral parts of the preoccipital ring are rectangular (and not round), the palpebral area and palpebral lobe are larger than in P. latifrons, and there is no fold right behind the posterior vertical row of lenses nor an isolated raised area just below the lenses. Not all of these characteristics may differentiate among Eldredgeops and other Phacops species however.
Location: Hamilton group , New York , USA.
Age: Devonian era 380 million years old.
Video Copyright ©Tony Petropoulos
IG: Geology . life
geologypage.com
