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Phacopidae

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Journal Article
Published: 01 March 2012
Journal of Paleontology (2012) 86 (2): 253–257.
..., and they all extend a little closer to the margin distally. Several other members of the Phacopidae are known from the Silurian and Devonian of Argentina. They include (as identified by the various authors) Zaplaops zaplaensis Baldis and Blasco in Baldis et al., 1976 , from the Lipeón Formation (Silurian...
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Journal Article
Published: 01 March 1991
Journal of Paleontology (1991) 65 (2): 276–294.
Journal Article
Journal: Paleobiology
Published: 01 July 1998
Paleobiology (1998) 24 (3): 359–370.
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Trilobite classification schemes of Swinnerton ( 1915 ), Harrington  et al....
Published: 20 June 2019
Opisthoparia Suborder Mesonacida Suborder Conocoryphida Section Olenina Section Conocoryphina Section Ptychoparina Section Calymenina Suborder Trinucleida Suborder Odontopleurida Order Proparia Encrinuridae Cheiruridae Phacopidae Burlingiidae ?Agnostidae Order Agnostida
Journal Article
Published: 01 September 1956
Geological Magazine (1956) 93 (5): 418–430.
...J. T. Temple Abstract "The cephalic characters which the post-Cambrian trilobite families Encrinuridae, Pliomeridae, Cheiruridae, and Phacopidae have in common are discussed, together with others which illustrate the distinctness of the Phacopidae. The importance of growth-rate studies...
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Order <span class="search-highlight">Phacopida</span> Salter,  1864 .
                ( 1–5 )  Pseudocybele  sp.,...
Published: 01 March 2017
Figure 13 Order Phacopida Salter, 1864 . ( 1–5 ) Pseudocybele sp., palpebral (×4.5), anterior oblique (×4.5), dorsal (×1.7), lateral oblique (×2.4), and anterior (×2.4), views of testate carapace, Ninemile Formation, WCN-F25–40, CM 59057. ( 6
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Updated summary of trilobites reported with preserved appendages, supplemen...
Published: 05 April 2017
Agnostida Agnostidae ++ ++ ++ o Cam. Guzhangia Orsten Phosphatic Müller & Walossek, 1987 Symphysurus sp. Asaphida Nileidae + + o + Ord. Tremadocian Fezouata Burgess Van Roy et al . 2010 Placoparia cambriensis Phacopida Pliomeridae ++ o o + Ord. Darriwilian Lower
Journal Article
Journal: Paleobiology
Published: 01 May 2023
Paleobiology (2023) 49 (2): 296–312.
... radiations within Phacopida. * Corresponding author. 08 11 2022 Copyright © The Author(s), 2022. Published by Cambridge University Press on behalf of The Paleontological Society 2022 The Author(s) This is an Open Access article, distributed under the terms of the Creative Commons...
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The compound eyes (with “eye shade”) of the trilobite  Erbenochile erbeni ,...
Published: 01 January 2013
Figure 5 The compound eyes (with “eye shade”) of the trilobite Erbenochile erbeni , as with other members of the order Phacopidae, incorporate single-crystal lenses of calcite with the hexagonal c -axes precisely oriented perpendicular to the lens. Furthermore, each lens is radially zoned
Journal Article
Published: 01 July 2007
Journal of Paleontology (2007) 81 (4): 684–700.
... protaspid larval stages were present in phacopid trilobites. Ontogenetic meraspid changes of this species are similar to those of Weyerites and Phacops , supporting the close phyletic relationships between these genera and the ontogenetic homogeneity of the Phacopidae. 07 03 2006...
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Journal Article
Journal: PALAIOS
Published: 01 August 2002
PALAIOS (2002) 17 (4): 394–402.
... clades as the Asaphina and Phacopida indicates that the aggregation is likely to have been a behavioral characteristic of trilobites in general. These assemblages also provide insight into the depositional dynamics in a otherwise monotonous interval of lime mudstones. They demonstrate an episodic pattern...
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Journal Article
Published: 01 July 1998
Journal of Paleontology (1998) 72 (4): 678–697.
...Gregory D. Edgecombe; Brian D. E. Chatterton; Beatriz G. Waisfeld; Norberto E. Vaccari Abstract Phacopida from upper Whiterock (Lower Caradoc) horizons in the Las Aguaditas Formation of San Juan Province, Argentina, include the calymenid Platycalymene trapezoidalis (Baldis and Pothe, 1995...
Journal Article
Published: 01 May 1968
Journal of Paleontology (1968) 42 (3): 811–826.
..., or Dalmanitina fauna, is reported for the first time in the New World. Silurian fossils, recognized for the first time in the White Head, can be divided into a Lower Llandovery and an undifferentiated (no younger than middle Upper) Llandovery fauna. Classification of the Phacopidae is reviewed; Phacopidella...
Journal Article
Published: 01 January 2008
Bulletin de la Société Géologique de France (2008) 179 (1): 89–95.
...] . They are represented within 69 individuals by Styginidae (Corynexochyda), Lichidae and Odontopleuridae (Lichida), Phacopidae and Acastidae (Phacopida), and Proetidae and Aulacopleuridae (Proetida). Trilobite paleobiodiversity evolution at a global scale (fig. 2A ) and at the regional scale of the Ardennes Massif...
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Journal Article
Journal: Paleobiology
Published: 01 November 2018
Paleobiology (2018) 44 (4): 638–659.
... the entire cephalon from the trunk, called Salter’s mode of molting (see Daley and Drage 2016 ; Drage et al. 2018 ). The developmental timing of facial suture fusion varies interspecifically within Phacopina and has so far been described from several species within the family Phacopidae (superfamily...
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Journal Article
Published: 01 November 2007
Bulletin de la Société Géologique de France (2007) 178 (6): 473–483.
... surviving the crisis, the Phacopida and Proetida, were severely affected. In this context, we focussed our investigations on representative trilobite-bearing sections of the Devonian Ardennes Massif, in order to evaluate this biodiversity. This work, which started in the spring of 2003 by one of us...
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Journal Article
Published: 20 June 2019
Geological Magazine (2020) 157 (1): 35–46.
... Opisthoparia Suborder Mesonacida Suborder Conocoryphida Section Olenina Section Conocoryphina Section Ptychoparina Section Calymenina Suborder Trinucleida Suborder Odontopleurida Order Proparia Encrinuridae Cheiruridae Phacopidae Burlingiidae ?Agnostidae Order Agnostida...
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Examples of the suborder Phacopina, a classic ‘cryptogenetic’ clade. (a)  A...
Published: 20 June 2019
Fig. 4. Examples of the suborder Phacopina, a classic ‘cryptogenetic’ clade. (a) Acernaspis copperi (Phacopoidea: Phacopidae) associated with a small exoskeleton of Rielaspis elegantula (Cheirurina: Encrinuridae) from the lower Silurian (Llandovery) Jupiter Formation, Anticosti Island, Québec
Journal Article
Published: 01 May 2006
Journal of Paleontology (2006) 80 (3): 529–536.
... possession a rather poorly preserved protaspis of Phacops , from the Devonian of Nevada. According to him, it is very similar in form to the larger protaspides of Calyptaulax Cooper, 1930 (see Chatterton, 1980 ; Chatterton and Speyer, 1997 ), the pterygometopid putative ancestors of the Phacopidae...
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Journal Article
Published: 19 September 2016
Journal of Paleontology (2016) 90 (6): 1100–1111.
... Phacopida Salter, 1864 Suborder Phacopina Struve in Richter et al., 1959 Superfamily Phacopoidea Hawle and Corda, 1847 Family Phacopidae Hawle and Corda, 1847 Subfamily Phacopinae Hawle and Corda, 1847 13 05 2016 Copyright © 2016, The Paleontological Society 2016...
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