【镜眼虫】
镜眼虫（学名：Phacops）是生存于晚奥陶纪至晚泥盆纪的一属三叶虫，生活在温暖的浅海中。这类三叶虫有著向前扩展延长的凸状眉间。巨大的眼睛使其视力较佳。胸部分为12节，每节都有许多面，让牠们能更容易地卷曲身体以躲避危险。尾甲比头部小得多，其上有深沟，结核上的刻纹成了表皮上的装饰。
== 物种 ==
Phacops rana
* Phacops accipitrinus (Phillips, 1841)
* Phacops algericus Alberti, 1983
* Phacops breviceps Barrande, 1846
* Phacops chlupaci Alberti, 1983
* Phacops circumspectans Paeckelmann, 1913
* Phacops degener Barrande, 1852
* Phacops fecundus
* Phacops fragosus Struve, 1970
* Phacops granulatus (Munster, 1840) 异名 Calymene granulata, P. posidoniae
* Phacops hoseri Hawle & Corda, 1847
* Phacops iowensis Delo, 1935
* Phacops imitator Struve, 1970
* Phacops kockeli Alberti, 1968
* Phacops latifrons (Bronn, 1825) 异名 Calymene latifrons
* Phacops maurulus
* Phacops modestus Barrande
* Phacops platilegnotor
* Phacops salteri Kozlowski, 1923
* Phacops sartenaeri Struve, 1985
* Phacops sobolevi Kielan, 1954
* Phacops sternbergi
* Phacops turco Richter & Richter
* Phacops wedekindi Richter & Richter, 1926
* Phacops zinkeni F.A. Roemer, 1843
=== 重新分配的物种 ===
以下的物种现时已被置入其他属。
* Phacops acuticeps = Acuticryphops acuticeps
* Phacops arcticus = Acernaspis arctica
* Phacops asper = Ananaspis aspera
* Phacops birdsongensis = Paciphacops birdsongensis
* Phacops boecki = Boeckops boecki
* Phacops braziliensis = Phacopidina braziliensis
* Phacops bronni = Reedops bronni
* Phacops bulliceps = Eophacops bulliceps
* Phacops caecus = Trimerocephalus caecus
* Phacops caffer = Metacryphaeus caffer
* Phacops cambelli = Paciphacops cambelli
* Phacops claviger = Paciphacops claviger
* Phacops caudatus = Dalmanites caudatus
* Phacops constrictus = Acastoides constrictus
* Phacops coronatus = Heliocephalus coronatus
* Phacops cristatus bombifrons = Viaphacops bombifrons
* Phacops cristatus cristatus = Viaphacops cristatus
* Phacops crossleii = Paciphacops crossleii
* Phacops cryptophthalmoides = Trimerocephalus cryptophthalmoides
* Phacops cryptophthalmus = Cryphops cryptophthalmus
* Phacops cultifrons = Eophacops trapeziceps
* Phacops dagincourti = Bouleia dagincourti
* Phacops deshayesi = Zeliszkella deshayesi
* Phacops downingiae var. α. vulgaris = Acaste downingiae
* Phacops downingiae var. β. macrops = Acastocephala macrops
* Phacops downingiae var. γ. inflatus = Acaste inflata
* Phacops ensae = Weyerites ensae
* Phacops fecundus = Ananaspis fecunda
* Phacops fecundus minor = Lochkovella minor
* Phacops ferdinandi = Chotecops ferdinandi
* Phacops glaber = Eophacops glaber
* Phacops glockeri = Phacopidella glockeri
* Phacops grimbergi = Lochkovella grimbergi
* Phacops handwerki = Eophacops handwerki
* Phacops hanusi = Lochkovella hanusi
* Phacops hoeninghausi = Prokops hoeninghausi
* Phacops hudsonicus = Paciphacops hudsonicus
* Phacops incisus = Nephranops incisus
* Phacops khatangensis = Acernaspis khatangensis
* Phacops kayseri = Eocryphops kayseri
* Phacops lacunosus = Trimerocephalus lacunosus
* Phacops latigenalis = Paciphacops latigenalis
* Phacops latilimbatus = Cryphops latilimbatus
* Phacops lentiginosus = Trimerocephalus lentiginosus
* Phacops limbatus = Dianops limbatus
* Phacops logani = Paciphacops logani
* Phacops lopatini = Monorakos lopatini
* Phacops mancus = Eophacops mancus
* Phacops marklandensis = Acernaspis marklandensis
* Phacops mastophthalmus = Trimerocephalus mastophthalmus
* Phacops metacernaspis = generic assignment uncertain
* Phacops michelini = Pseudocryphaeus michelini
* Phacops microps = Kainops microps
* Phacops milleri = Eldredgeops milleri
* Phacops miser = Lochkovella miser
* Phacops musheni = Eophacops musheni
* Phacops nudus = generic assignment uncertain
* Phacops ocellus = Hadrorachus ocellus
* Phacops opitzi = Chotecops opitzi
* Phacops orestes = Acernaspis orestes
* Phacops orientalis = Ananaspis orientalis
* Phacops parabolus = Phillipsinella parabola
* Phacops phillipsi = Kloucekia phillipsi
* Phacops primaevus = Acernaspis primaeva
* Phacops prokopi = Prokops prokopi
* Phacops pulcellus = Acernaspis pulcella
* Phacops quadrilineatus = Acernaspis quadrilineata
* Phacops rana = Eldredgeops rana
* Phacops raymondi = Kainops raymondi
* Phacops schlosseri = Struveops schlosseri
* Phacops serratus = Paciphacops serratus
* Phacops schlotheimi = Geesops schlotheimi
* Phacops socialis = Dalmanitina socialis
* Phacops speculator = Austerops speculator
* Phacops sphaericeps = Dereimsia sphaericeps
* Phacops steinachensis = Trimerocephalus steinachensis
* Phacops stellifer = Greenops (Neometacanthus) stellifer
* Phacops stokesii = generic assignment uncertain
* Phacops straitonensis = Podowrinella straitonensis
* Phacops trapeziceps = Eophacops trapeziceps
* Phacops veles = Kainops veles
* Phacops vodorezovi = Trimerocephalus vodorezovi
* Phacops volborthi = Denckmannites volborthi
* Phacops wocklumeriae = Weyerites wocklumeriae
== 参考文献 ==
== 外部连结 ==
* Phacops
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