Conodont fauna and biostratigraphy of the Honghuayuan Formation (Early Ordovician) of Guizhou, South China

Zhen, Yong Yi; Percival, Ian G.; Liu, Jian Bo; Zhang, Yuan Dong

doi:10.1080/03115510903043655

Cited by 40 publications

(25 citation statements)

References 28 publications

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“…As has been the case in other countries, most of the past conodont investigations in China (e.g., An 1981, 1985, Chen & Zhang 1984, An & Ding 1985, Ni & Li 1987, An & Zheng 1990, Gao 1991, Wang & Bergström 1995, Wang et al 1996, Wang & Zhou 1998, Zhang 1998, Zhao et al 2000, Zhen et al 2007, 2009, Chen et al 2011 have had a biostratigraphic and taxonomic focus. Other aspects of conodont research, such as palaeoecology and conodont animal palaeobiology, have been dealt with in far fewer studies.…”

mentioning

confidence: 95%

On the integration of Ordovician conodont and graptolite biostratigraphy: new examples from Gansu and Inner Mongolia in China

Wang¹,

Bergstroem²,

Zhen³

et al. 2013

Alcheringa: An Australasian Journal of Palaeontology

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mentioning

confidence: 95%

On the integration of Ordovician conodont and graptolite biostratigraphy: new examples from Gansu and Inner Mongolia in China

Wang¹,

Bergstroem²,

Zhen³

et al. 2013

Alcheringa: An Australasian Journal of Palaeontology

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“…The conodont zonation used here is a combination of the zonation schemes by An (1981, An et al (1981An et al ( , 1985, Dong (1985), Zhang (1998), Wang & Bergström (1995), Zhen et al (2009) and and it follows as closely as possible to the original definitions (Fig. 2).…”

Section: Conodont Zones In the Yichang Regionmentioning

confidence: 99%

“…appendix; Stouge & Li, unpublished data). Bergstroemognathus extensus and Tropodus comptus (following T. australis; pars = Triangulodus bifidus sensu Zhen et al, 2009) appear for the first time in this unnamed interval. The interval is recorded from the base of the Dawan Formation.…”

Section: Cambrianmentioning

confidence: 99%

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Lower and Middle Ordovician conodont diversity of the Yichang Region, Hubei Province, Central China

Wu¹,

Stouge²,

Li³

et al. 2010

Bull. Geosci.

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A survey on the (palaeo-) diversity of the Lower and Middle Ordovician conodont faunas from the Yichang Region, Hubei Province, Central China is presented. Analysis of the number of species through time shows the species richness is cyclical developed in the succession -varying from low to high. One major conodont diversity peak is recorded in the mid to late Floian Stage (Oepikodus evae Zone, stage slice Fl 2, Lower Ordovician), where 33 species are recorded in the lower unit of the Dawan Formation. A smaller but second high diversity is found in the Darriwilian Stage (Lenodus variabilis Zone; stage slice Da 2, Middle Ordovician) with a maximum of 23 species. Secondary, smaller diversification maxima are present in the early Tremadocian, late Tremadocian, early Dapingian and late Darriwilian stages. Current information on acritarchs, brachiopods, and trilobites shows that the highest diversity maximum of conodonts corresponds to a similar high in brachiopod diversity, whereas acritarch and trilobite maximum diversity appear after the conodonts/brachiopods in the region.•

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“…The age of the Fenxiang Formation originally was interpreted as late Tremadocian (e.g., Wu et al 2010). However, the occurrence of the conodont Acodus triangularis in Bed 13 at Tianjialing indicates that at least the upper part of the formation is early Floian (Arenig) in age (Zhen et al 2009, Baliński et al 2012. The lithological and palaeontological characteristics of the formation suggest frequent changes of the sedimentary regime from low-energy, deep-water basin to energetic, shallow-water carbonate platform.…”

Section: Geological Settingmentioning

confidence: 99%

An Early Ordovician clonal organism from China with a zig-zagged suture on branches

Dzik¹,

Baliński²,

Sun³

2016

Bull. Geosci.

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An enigmatic clonal organism from the earliest Floian (Arenig) Fenxiang Formation at Tianjialing in Hubei Province, China and here named Crinisdendrum sinicum gen. et sp. nov., shows a puzzling combination of anatomical characters. Lateral colony branches that originate from tubular stolons are built of C-shaped serial oblique units resembling fuselli and merging along a zig-zagged suture, a set of features generally believed to be unique to pterobranch hemichordates. At least most branches taper near their tips and are closed in a manner resembling the termination of thecae previously reported in the extant pterobranch Rhabdopleura normani. The main drawback of the pterobranch model is that previous observations of terminating thecae in R. normani have neither been confirmed by more recent zoological studies nor explained in functional and developmental terms. Pyritized Crinisdendrum specimens preserved in shale were scanned using X-ray microtomography, enabling restoration of early stages of colony development (astogeny). Pyritic internal moulds of probable thecae, showing their interiors in negative relief, and phosphatized walls of thecae overgrown by black corals were recovered chemically from samples of calcareous intercalations in the Fenxiang Formation. Both sets of specimens exhibit a thread-like cylindrical structure resembling a stolon inside the theca and located below the zigzagged suture. A similar organization of branches also characterizes the feathery colonies of Webbyites from the Early Ordovician Klabava Formation of Bohemia, although these colonies are known in less detail. A new family, Crinisdendridae is proposed to encompass these two genera. Further testing of the hypothesis of a pterobranch affinity for these 470-million-year-old organisms will require a better understanding of the anatomy and growth of extant clonal hemichordates.•

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Conodont fauna and biostratigraphy of the Honghuayuan Formation (Early Ordovician) of Guizhou, South China

Cited by 40 publications

References 28 publications

On the integration of Ordovician conodont and graptolite biostratigraphy: new examples from Gansu and Inner Mongolia in China

On the integration of Ordovician conodont and graptolite biostratigraphy: new examples from Gansu and Inner Mongolia in China

Lower and Middle Ordovician conodont diversity of the Yichang Region, Hubei Province, Central China

An Early Ordovician clonal organism from China with a zig-zagged suture on branches

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