A Devonian Trilobite with an Eyeshade

@article{Fortey2003ADT,
  title={A Devonian Trilobite with an Eyeshade},
  author={Richard A. Fortey and Brian D. E. Chatterton},
  journal={Science},
  year={2003},
  volume={301},
  pages={1689 - 1689}
}
Trilobites include the oldest species with preserved eyes for which detailed optical mechanisms have been suggested. They appear in the Cambrian, and in comparison to other species present then, trilobites already had unusually sophisticated eyes with lenses made out of the mineral calcite ( [1][1 
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18 Citations
Highly Influential Citations
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Background Citations
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Methods Citations
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Results Citations
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18 Citations

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Latest Emsian (Early Devonian) sediments at the famous mud-mound- and trilobite-locality Hamar Laghdad (Tafilalt, Morocco) yielded some red-coloured remains of phacopid trilobites. Closer examination…
A trilobite faunule from the Lower Devonian of the Saoura Valley, Algeria: biodiversity, morphological variability and palaeobiogeographical affinities
Abstract Trilobites are widespread in Lower Devonian deposits of north Gondwana, and some have been collected from two known sections of the Saoura Valley in SW Algeria, from the ‘Chefar el Ahmar’…
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The compound eyes of trilobites, which appeared in the Early Cambrian, represent one of the first preserved visual systems. Application of state-of-the-art microscopy techniques in the present study…
THE EXTRAORDINARY TRILOBITE FENESTRASPIS (DALMANITIDAE, SYNPHORIINAE) FROM THE LOWER DEVONIAN OF BOLIVIA
TLDR
The hitherto poorly known, monotypic trilobite genus Fenestraspis from the Lower Devonian of Bolivia is revised and its original assignment to the Synphoriinae supported, and the function of the fenestrae remains uncertain.
MAGNESIUM‐RICH INTRALENSAR STRUCTURES IN SCHIZOCHROAL TRILOBITE EYES
Abstract:  The interpretation of the lenses of schizochroal trilobite eyes as aplanatic doublets by Clarkson and Levi‐Setti over 30 years ago has been widely accepted. However, the means of achieving…
The palaeoecology of trilobites
  • R. Fortey
  • Environmental Science, Geography
  • 2014
TLDR
Different contemporaneous natural assemblages of trilobites occupied different habitats ranging from shallow water to deep environments, which are characterized by distinctive suites of genera (biofacies) and further encouraged the evolution of endemics and distinct suites of taxa in relation to palaeolatitude.
Latest Early to Early Middle Devonian Trilobites from the Erbenochile Bed, Jbel Issoumour, Southeastern Morocco
Abstract A bed on Jbel Issoumour, near Alnif in southeastern Morocco, contains numerous complete trilobites. The bed is located stratigraphically at the base of the El Otfal Formation, immediately…
Fossil Behavior Compendium
TLDR
A review of dendrinings attributed to foraminiferans: Semidendrina gen. nov within the boring Entobia cretacea, Cretaceous, England.
Lanceaspis hammondi n. gen., n. sp. - a questionable early Asteropyginae (Trilobita) from the Pragian of the Morocco
TLDR
This peculiar trilobite possess features of Asteropyginae and Acastavinee and its affiliation is uncertain and the prefrontal spine does not appear in any of these two subfamilies.
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References

SHOWING 1-4 OF 4 REFERENCES
Trilobite Eyes: Calcified Lenses in vivo
The corneal lenses preserved in the eyes of some of the Paleozoic trilobites (Arthropoda) are constructed of calcite that is crystallographically oriented to behave like glass. The calcareous lenses…
Independent testing of a paleobiological hypothesis; the optical design of two Ordovician pelagic trilobites reveals their relative paleobathymetry
-Evidence that can be used to interpret the life habits of extinct organisms usually takes three forms: functional analysis, analogy with living organisms, and geological evidence. Independent…
Image formation by bifocal lenses in a trilobite eye?
Squint and the development of binocularity in humans
TLDR
It is shown that binocularity1, orientation sensitivity2,3, ocular dominance4 and disparity5 of cortical neurones can be modified by experimental procedures in kittens during the sensitive period (3–14 weeks of age).