Présence de Pleurothyrella knodi (Brachiopoda, Terebratulida dévoniens) en Guinée-bissau. Implications paléogéographiques

Drot, Jeannine; Villeneuve, Michel

doi:10.1016/s0016-6995(85)80005-x

Cited by 12 publications

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“…Cet article, exclusivement consacrk aux Trilobites, n'a pas pour but de traiter de l'extension de la Province Malvino-Cafre, rkcemment klargie ?i la Guinke-Bissau (Drot & Villeneuve 1985), mais plut6t de rechercher les origines possibles de certains Calmoniidae du Dkvonien infkrieur. Cette famille est considkrke par Eldredge & BraniSa (1980: 191) comme un groupe illustrant u. .…”

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Trilobites Calmoniidae de l'Ordovicien supérieur du Maroc et les origines de la Province Malvino‐Cafre

Henry

1987

LET

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A re‐examination of the trilobite Baniaspis globosa Destombes (Phacopina) from the Ashgill of the Anti‐Atlas (Morocco) shows that it has several derived characters which allow us to classify it in the family Calmoniidae. Calmoniids were characteristic members of the Malvino‐Kaffric province during the Lower Devonian. Hence we regard the origins of this palaeogeographic province as located on the northern Gondwanan margin as early as Ashgill, or even Caradoc, times. We agree with those authors who have suggested that the trilobite associations present in the Anti‐Atlas, the Montagne Noire (France) and Bohemia during the earlier Ordovician argue against the existence of a ‘proto‐Tethys’ ocean.

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