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Calmoniid trilobites of the Lower Devonian Scaphiocoelia zone of Bolivia, with remarks on related species. Bulletin of the AMNH ; v. 165, article 2

Show simple item record Eldredge, Niles. en_US Branisa, Leonardo. en_US 2005-10-05T21:37:35Z 2005-10-05T21:37:35Z 1980 en_US
dc.description p. 183-289 : ill., map ; 26 cm. en_US
dc.description Includes bibliographical references (p. 287-289). en_US
dc.description.abstract "The calmoniid trilobites of the Scaphiocoelia assemblage zone (Lower Devonian) of Bolivia are described. The Scaphiocoelia Zone is the oldest Devonian unit in Bolivia and is recognized in the base of the Belén Formation, the Icla Formation, and the Gamoneda Formation, in northern, central, and southern Bolivia, respectively. Twenty-one trilobite and one eurypterid taxa are recognized from this zone, 17 of which are species of Calmoniidae. Scaphiocoelia Zone calmoniids herein described as new include one genus (Deltacephalaspis), and five subgenera (Bainella (Belenops), the nominate subgenus of Deltacephalaspis, Deltacephalaspis (Prestalia), Schizostylus (Curuyella), and Kozlowskiaspis (Romanops)). Ten new Scaphiocoelia Zone species are described: D. (Deltacephalaspis) comis, D. (D.) retrospina, D. (D.) magister, D. (Prestalia) tumida, Schizostylus (Curuyella) granulata, ?Acastoides gamonedensis, Phacopina convexa, Kozlowskiaspis (Romanops) borealis, K. (Romanops) australis, and Tarijactinoides tikanensis. Additionally, two new species are characterized but not formally diagnosed, and two others are distinguished but remain unassigned to genera. Three previously described species from the Scaphiocoelia Zone are redescribed: Bainella (Belenops) insolita (Wolfart), Parabouleia calmonensis Eldredge, and Tarijactinoides jarcasensis Suárez Soruco. The vicariant pattern within Bolivia, and the biogeographic affinities of Bolivia with other areas within the Malvino-Kaffric Province are briefly discussed. We also present a general discussion of calmoniid anatomy and taxic diversity. Non-Scaphiocoelia Zone trilobites from Bolivia and elsewhere are also described, discussed or figured as a consequence of our study of the Scaphiocoelia Zone material. We describe the new genus Andinacaste from the Silurian of Bolivia. We describe as new Andinacaste legrandi and Phacopina padilla, the latter from the Icla Formation, above the Scaphiocoelia Zone, at Padilla, Bolivia. We present formal revisions for the following six genera: Bainella, Schizostylus, Phacopina, Kozlowskiaspis, Parabouleia, and Tarijactinoides. We discuss the status of three additional genera: Probolops, Acastoides, and Scotiella. We formally revise Kozlowskiaspis (Kozlowskiaspis) superna and Andinacaste chojnacotensis. Finally, we also discuss or figure an additional 15 calmoniid and acastid species in conjunction with our analysis of the composition of the calmoniid component of the Scaphiocoelia Zone fauna"--P. 185. en_US
dc.format.extent 31534623 bytes
dc.format.mimetype application/pdf
dc.language eng en_US
dc.language.iso en_US
dc.publisher New York : American Museum of Natural History en_US
dc.relation.ispartofseries Bulletin of the American Museum of Natural History ; v. 165, article 2 en_US
dc.subject.lcc QH1 .A4 vol.165, art.2, 1980 en_US
dc.subject.lcsh Trilobites -- Bolivia. en_US
dc.subject.lcsh Arthropoda, Fossil -- Bolivia. en_US
dc.subject.lcsh Paleontology -- Devonian -- Bolivia. en_US
dc.subject.lcsh Paleontology -- Bolivia. en_US
dc.title Calmoniid trilobites of the Lower Devonian Scaphiocoelia zone of Bolivia, with remarks on related species. Bulletin of the AMNH ; v. 165, article 2 en_US
dc.type text en_US

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  • Bulletin of the American Museum of Natural History
    The Bulletin, published continuously since 1881, consists of longer monographic volumes in the field of natural sciences relating to zoology, paleontology, and geology. Current numbers are published at irregular intervals. The Bulletin was originally a place to publish short papers, while longer works appeared in the Memoirs. However, in the 1920s, the Memoirs ceased and the Bulletin series began publishing longer papers. A new series, the Novitates , published short papers describing new forms.

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