Reedops deckeri, a trilobite of the suborder Phacopina
Scientific classification
Domain:
Eukaryota
Kingdom:
Animalia
Phylum:
Arthropoda
Class:
†Trilobita
Order:
†Phacopida
Suborder:
†Phacopina Struve, 1959
Superfamilies
Phacopoidea
Dalmanitoidea
Acastoidea
The Phacopina[1] comprise a suborder of the trilobite order Phacopida. Species belonging to the Phacopina lived from the Lower Ordovician (Tremadocian) through the end of the Upper Devonian (Famennian).[2] The one unique feature that distinguishes Phacopina from all other trilobites are the very large, separately set lenses without a common cornea of the compound eye.
^Struve, W. Suborder Phacopina, p. O461. In: Moore, R.C. (ed.). Treatise on Invertebrate Paleontology. Part O – Arthropoda (Trilobitomorpha). 1959
^Moore, R.C. (ed.). Treatise on Invertebrate Paleontology. Part O – Arthropoda (Trilobitomorpha). 1959
The Phacopina comprise a suborder of the trilobite order Phacopida. Species belonging to the Phacopina lived from the Lower Ordovician (Tremadocian) through...
development of Dalmanitina, and the evolution of facial suture fusion in Phacopina". Paleobiology. 44 (4): 638–659. Bibcode:2018Pbio...44..638D. doi:10.1017/pab...
groups show secondary lost facial sutures, such as all Agnostina and some Phacopina. Another common feature of the Olenellina also suggests this suborder...
expanded glabella, short or absent preglabellar area, and schizochroal (Phacopina) or holochroal (Cheirurina and Calymenina) eyes. Schizochroal eyes are...
the subclass Librostoma. Unlike the trilobites of the phacopid suborder Phacopina, whose eyes are schizochroal, the proetids have the more common holochroal...
of any other insect, resembling the eyes found in the trilobite group Phacopina. Instead of a compound eye consisting of hundreds to thousands of ommatidia...
reappears from the Telychian to the Sheinwoodian (Silurian). As part of the Phacopina suborder, its members have schizochroal eyes. The Pterygometopinae may...
close to the common ancestor of the Phacopina. Gyrometopus is phacopid in appearance, but unlike in other Phacopina, a rostral plate is present, although...
Zlichovaspis rugosa Odontocheila, a genus of beetles Struve, W. Suborder Phacopina, p. O471-O472. in Moore, R.C. (ed.). Treatise on Invertebrate Paleontology...
Chotecops is a genus of trilobites from the order Phacopida, suborder Phacopina, family Phacopidae. It was initially erected as a subgenus of Phacops...
Eldredgeia is a genus of trilobites in the order Phacopida, suborder Phacopina, family Calmoniidae. This genus comes from the Devonian of South America...
the swordlike extension from the front of the head. Like all sighted Phacopina, Psychopyge has schizochroal eyes, the frontal lobe of the central raised...
complex schizochroal eye was found only in one sub-order of trilobite, the Phacopina (Ordovician-Silurian). There is no exact counterpart to the schizochroal...
smaller trilobites but further perfected in this genus. Like in all sighted Phacopina, the eyes of Phacops are compounded of very large, separately set lenses...
Paciphacops is a genus of trilobites within order Phacopida, suborder Phacopina. This genus is found primarily in the United States and Australia and...
Dalmanitoidea is a superfamily of trilobites in the order Phacopida, containing the three families Dalmanitidae, Diaphanometopidae and Prosopiscidae. S...
have lost facial sutures again (some Eodiscina, all Agnostina, and a few Phacopina), but all of these are blind, while all Olenellina have eyes. The suborder...
than the lobe (L1) just in front of the occipital ring (L0). All sighted phacopina have schizochroal eyes, but in Coltraneia these are particularly large...
Upper Devonian, with representatives in all paleocontinents. As in all Phacopina, the eyes (if present) consist of very large (0.5 mm in Phacops rana)...
Auffray, Jean-Christophe (2004). "Variation in the eye of Acuticryphops (Phacopina, Trilobita) and its evolutionary significance: a biometric and morphometric...
and earliest Upper Devonian of Morocco and the USA. Like in all sighted Phacopina, the eyes of Eldredgeops are composed of very large (0.5mm in Eldredgeops...
Acastidae is a family of trilobites in the order Phacopida, suborder Phacopina, superfamily Acastoidea, containing the following genera: Wikimedia Commons...
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