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4 results for “Kuanchuanpu Formation”
Data from: An intermediate type of medusa from the early Cambrian Kuanchuanpu Formation, South China
The tetraradial or pentaradial fossil embryos and related hatched individuals from the early Cambrian Kuanchuanpu Formation are of great interest for understanding the early evolution of medusozoans. The phylogenetic and evolutionary significance of their external and internal characters (e.g. manubrium, tentacles, septa and claustra) is still controversial. Here we describe a new pentamerous medusozoan, <i>Hanagyroia orientalis</i> gen. et sp. nov., characterized by five well-developed perradial oral lips around a remarkably large manubrium, a conspicuous equatorial groove, and five short interradial pairs of extensile tentacles at the bell margin. Internally, five broad and stout interradial septa join horizontally to form the claustra. <i>Hanagyroia orientalis</i> lacks the frenula, apertural lappet and velarium seen in coeval microfossils and extant cubozoans. Although <i>H. orientalis</i> resembles extant coronate scyphozoans in its round medusa-like bell margin and equatorial groove, cladistic analysis suggests close affinity with cubozoans. <i>Hanagyroia</i> may represent an intermediate morphological type between scyphozoans and cubozoans. The well-developed oral lips and paired short strong tentacles of <i>Hanagyroia</i> suggest direct development.
Data from: Diversity of cnidarians and cycloneuralians in the Fortunian (early Cambrian) Kuanchuanpu Formation at Zhangjiagou, South China
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Data from: An intermediate type of medusa from the early Cambrian Kuanchuanpu Formation, South China
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Data from: Anatomy and affinities of a new 535-million-year-old medusozoan from the Kuanchuanpu Formation, South China
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