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Variation in lens packing of Phacops (Trilobita)

Published online by Cambridge University Press:  01 May 2009

R. A. Fortey  and
S. F. Morris
R. A. Fortey
Affiliation:
British Museum (Natural History), Cromwell Road, London SW7 5BD
S. F. Morris
Affiliation:
British Museum (Natural History), Cromwell Road, London SW7 5BD
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Summary

Phacops turco aff. praecedens Haas, from the Devonian (Eifelian) of Morocco, varies in the type of lens packing in the eye. Cubic close packing in trilobite eyes is described for the first time.

Type
Articles
Information
Geological Magazine , Volume 114 , Issue 1 , January 1977 , pp. 25 - 32
Copyright
Copyright © Cambridge University Press 1977

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References

Alberti, G. K. B. 1970. Trilobiten des jüngeren Siluriums sowie des Unter- und Mitteldevons: II. Abh. senckenb. naturforsch. Ges. 525, 1–233.Google Scholar
Barrande, J. 1852. Système silurienn du centre de la Bohême. 1. Recherches paléontologiques. xxx+935 pp. Prague and Paris.CrossRefGoogle Scholar
Bergström, J. 1973. Organisation, life and systematics of trilobites. Fossils and Strata 2, 1–69, 5 pls.CrossRefGoogle Scholar
Burton, C. J. 1972. Provincial affinities of Eifelian phacopids (Trilobita) of South West England and Brittany. Proc. Ussher Soc. 2, 458–63.Google Scholar
Burton, C. J. & Eldredge, N. 1974. Two new subspecies of Phacops rana (Trilobita) from the Middle Devonian of North-West Africa. Palaeontology 17, 349–63, pls 47–48.Google Scholar
Campbell, K. S. W. 1967. Henryhouse trilobites. Bull. Okla. geol. Surv. 115, 1–68.Google Scholar
Campbell, K. S. W. 1975. The functional anatomy of phacopid trilobites: Musculature and eyes. J. Proc. R. Soc. N.S.W. 108, 168–88.Google Scholar
Chlúpač, I. 1971. New phacopid trilobites from the Devonian of Czechoslovakia. Cas. Miner. Geol. 16, 255–61, pl. 1–4.Google Scholar
Clarkson, E. N. K. 1969(a). On the schizochroal eyes of three species of Reedops (Trilobita, Phacopidae) from the lower Devonian of Bohemia. Trans. R. Soc. Edinb. 68, 183–205.CrossRefGoogle Scholar
Clarkson, E. N. K. 1969(b). Dimorphism of the Eye in Weberides shunnerensis (King) [Trilobita]. In Westermann, G. E. G. (Ed.): Sexual dimorphism in fossil metazoa and taxonomic implications. Int. Un. geol. Sci. ser. A 1, 185–95, pl. 13.Google Scholar
Clarkson, E. N. K. 1971. On the early schizochroal eyes of Ormathops (Trilobita, Zeliszkellinae). Mém. Bur. Rech. géol. minièr. 73, 51–63.Google Scholar
Clarkson, E. N. K. 1973. The eyes of Asaphus raniceps Dalman (Trilobita). Palaeontology, 16, 425–44.Google Scholar
Clarkson, E. N. K. 1975. The evolution of the eye in trilobites. Fossils and Strata 4, 7–31, 6 pls.CrossRefGoogle Scholar
Clarkson, E. N. K. & Levi-Setti, R. 1975. Trilobite eyes and the optics of Des Cartes and Huygens. Nature, Lond. 254, 663–67.CrossRefGoogle ScholarPubMed
Eldredge, N. 1972. Systematics and evolution of Phacops rana (Green, 1832). and Phacops iowensis Delo 1935 (Trilobita) from the Middle Devonian of North America. Bull. Am. Mus. nat. Hist. 147, 45–113.Google Scholar
Eldredge, N. 1973. Systematics of Lower and Lower Middle Devonian species of the trilobite Phacops Emmrich in North America. Bull. Am. Mus. nat. Hist. 151, 285–338.Google Scholar
Haas, W. 1968. Trilobiten aus dem Silur und Devon von Bithynien (NW-Türkei). Palaeontographica A 130, 60–207, pls 26–37.Google Scholar
Maximova, Z. A. 1967. Late Silurian and Early Devonian trilobites of central Kazakhstan. In Oswald, D. H. (Ed.): International Symposium on the Devonian System II. 777–89. Calgary.Google Scholar
Morzadec, P. 1969. Le Dévonian de la rive nord de la rivière du Faou (Finistère). Etude stratigraphique — Etude des trilobites. Bull. Soc. Géol. miner. Bretagne, n.s. [for 1968], 1–58, pls 1–9.Google Scholar
Richter, R. & Richter, E. 1939. Trilobiten aus dem Bosporus-Gebeit. Abh. preuss. geol. Landesanst. 190, 1–49, pls 16–19.Google Scholar
Selwood, E. B. & Burton, C. J. 1969. Possible dimorphism in certain Devonian Phacopids (Trilobita). In Westermann, G. E. G. (Ed.): Sexual dimorphism in fossil metazoa and taxonomic implications. Int. Un. geol. Sci. ser A, 1, 196–200.Google Scholar
Struve, W. 1970. Beiträge zur kenntnis der Phacopina (Trilobita). 7. Phacops — Arten aus dem Rheinischen Devon. Senckenberg. leth. 51, 133–173, 8 pls.Google Scholar
Towe, K. 1973. Trilobite eyes: calcified lenses in vivo. Science, N.Y. 179, 1007–9.CrossRefGoogle ScholarPubMed