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3 August 2022 Mississippian Palynoflora from the Clarke River Basin, North Queensland, Australia
Geoffrey Playford
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Abstract

The diverse, well-preserved spore assemblage hosted by the non-marine Lyall Formation of the Clarke River Basin in north Queensland includes many species reported previously from Mississippian strata elsewhere in Australia, together with one new genus and species (Apricasporites cancellosus) and seven additional new species (Granulatisporites commutabilis, Anapiculatisporites radiatus, Camptotriletes inaequabilis, C. suggrandis, Convolutispora inreligata, Foveosporites magnus, and Endosporites circumsaeptus). In terms of the existing palynostratigrahic zonation of Australian Mississippian successions, the palynoflora is clearly attributable to the Visean Anapiculatisporites largus Zone, first recognized in the Bonaparte Basin (northwestern Australia) and well-represented also in the Drummond Basin, east-central Queensland. However, a few constituent species are known as components of the succeeding Grandispora maculosa Zone (mid/late Visean–early Serpukhovian). This study provides confirmation of floristic affinities between Eastern and Western Gondwana during the Mississippian.

El conjunto diverso y bien conservado de esporas registrado en la Formación Lyall de la cuenca del río Clarke, en el norte de Queensland, incluye muchas especies del Mississippiano reportadas previamente en otras partes de Australia, a la vez que incluye un nuevo género y especie (Apricasporites cancellosus) y siete nuevas especies adicionales (Granulatisporites commutabilis, Anapiculatisporites radiatus, Camptotriletes inaequabilis, C. suggrandis, Convolutispora inreligata, Foveosporites magnus y Endosporites circumsaeptus). En términos de la zonación palinoestratigráfica existente de las sucesiones mississippianas de Australia, la palinoflora es claramente atribuible a la zona Anapiculatisporites largus del Viseano, reconocida por primera vez en la cuenca de Bonaparte (noroeste de Australia) y bien representada también en la cuenca de Drummond, en el centro-este de Queensland. Sin embargo, algunas especies constituyentes se conocen como componentes de la sucesiva Zona Grandispora maculosa (Viseano medio/final–Serpukhoviano temprano). Este estudio confirma las afinidades florísticas entre el este y el oeste de Gondwana durante el Mississippiano.

Geoffrey Playford "Mississippian Palynoflora from the Clarke River Basin, North Queensland, Australia," Ameghiniana 59(4), 225-264, (3 August 2022). https://doi.org/10.5710/AMGH.15.06.2022.3504
Received: 22 March 2022; Accepted: 15 June 2022; Published: 3 August 2022
JOURNAL ARTICLE
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KEYWORDS
Clarke River Basin
Cuenca del Río Clarke
Eastern Gondwana
Gondwana oriental
Miosporas
Miospores
Mississippian
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