The oldest Cambrian trilobite – brachiopod association in South China

Zhang, Zhiliang; Pour, Mansoureh Ghobadi; Попов, Л. Е.; Holmer, Lars E.; Chen, Feiyang; Chen, Yanlong; Brock, Glenn A.

doi:10.1016/j.gr.2020.08.009

Cited by 26 publications

(59 citation statements)

References 75 publications

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“…Diverse kinds of data are needed for characterizing and global correlation of stratigraphic intervals in the Cambrian across the paleocontinents. The most abundant and diverse biostratigraphic data in early to middle Cambrian successions come from Small Shelly Fossils (SSFs), which are well documented and broadly known from the lower Cambrian of South China [1,2] and North China (Figure 1). In recent years, SSFs from the Xinji Formation have been studied in detail.…”

Section: Introductionmentioning

confidence: 99%

“…Remark. Eoobolus is one of the oldest known linguliform brachiopods that co-occurs with the oldest trilobite, Parabadiella huoi [2]. Eoobolus is a globally distributed taxon [2,14,27,[67][68][69][70].…”

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confidence: 99%

“…Eoobolus is one of the oldest known linguliform brachiopods that co-occurs with the oldest trilobite, Parabadiella huoi [2]. Eoobolus is a globally distributed taxon [2,14,27,[67][68][69][70]. The characters of the metamorphic shell, apical angle in adult ventral valves, and the ornamentations are important diagnostic features for the Eoobolidae [67].…”

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confidence: 99%

“…Both the primary layer and the secondary columnar layer were constituted with elongated polyhedral grains (Figure 9D4). The origin of the phosphorite grains are thought to be the secondary diagenesis [2,69]. The decomposition of earlier phosphorite or organic matters may cause the supersaturation of apatite solution, leading to the recrystallization of apatite within the hollow tubes and the primary layers.…”

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confidence: 99%

“…The apical angle of ventral valve from the Zhangxia Formation ranges from 80 • to 97 • , which is similar to many species of Eoobolus, for example, Eoobolus sp. in Betts et al [75], E. viridis in Zhang et al [2], and E. priscus in Poulsen [76]. Due to the lack of complete materials, it is hard to assign this type to any known species.…”

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confidence: 99%

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First Report of Small Shelly Fossils from the Cambrian Miaolingian Limestones (Zhangxia and Hsuzhuang Formations) in Yiyang County, Henan Province of North China

Holmer

Liang

et al. 2021

Minerals

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Small Shelly Fossils (SSFs) from the Cambrian are widely distributed and well known across different paleocontinents of the world. However, middle Cambrian SSFs from North China Platform have only rarely been documented until now. In this paper, we presented the first report on SSFs from bioclastic and oolitic limestones of the Zhangxia and Hsuzhuang formations of Henan province, North China. The carbonate-hosted fauna includes brachiopods (Micromitra sp., M. modesta, Eoobolus sp., and Schizopholis sp.), helcionellids (Oelandiella accordionata and O. aliciae), hyolithids, Hyolithellus sp., Chancelloria eros, sponge spicules, echinoderm ossicles, and chancelloriid sclerites. In terms of preservation, the brachiopod shell valves of M. modesta appeared to be homogeneous, consisting of tightly packed phosphate grains. Eoobolus sp. is composed of primary layer and secondary baculate, both of which consist of tightly compacted phosphate grains. Schizopholis sp. has multiple-lamellar phosphatized microstructures that distinctly differ from the other brachiopods recovered from the Longwanggou section. A similar multiple-lamellar microstructure was also revealed in conchs of Hyolithellus, with tightly compacted phosphate grains. The argillaceous shell of Oelandiella accordionata and O. aliciae, and the calcitic inner molds of hyolith did not preserve any shell structure. The helcionellids O. accordionata and O. aliciae and the brachiopod M. modesta were reported for the first time from North China. The fauna is most similar to the middle Cambrian faunas of South Australia, in the brachiopod and mollusk components; it is also similar in composition of brachiopods and mollusks to coeval faunas from South China. The new fauna of SSFs in the Yiyang Longwanggou Section indicated that the Hsuzhuang and Zhangxia formations are late Drumian to middle Guzhuangian in age, most likely correlating with the Murrawong Creek Formation of South Australia.

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confidence: 99%

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confidence: 99%

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First Report of Small Shelly Fossils from the Cambrian Miaolingian Limestones (Zhangxia and Hsuzhuang Formations) in Yiyang County, Henan Province of North China

Holmer

Liang

et al. 2021

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Morphological disparity and evolutionary patterns of Cambrian hyoliths

Liu,

Topper,

Strotz

et al. 2024

Papers in Palaeontology

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Hyolitha represent one of the major constituents of the Cambrian Evolutionary Fauna, first appearing in the Terreneuvian and rapidly diversifying soon after. Recent work has both enriched the hyolith fossil record and expanded our understanding of their biology, but studies documenting the evolutionary trajectory of Cambrian hyoliths remain scarce. Here we present the first study of changes in morphological disparity in Cambrian hyoliths over time with the aim of characterizing the evolutionary trajectory of hyoliths throughout their primary period of diversification. Our results show that hyoliths occupied distinct regions of morphospace at different times during the Cambrian, with an expansion in morphospace occupation associated with the increase in hyolith diversity in the early Cambrian. Both the Sinsk Event and multiple abiotic factors led to a decline in hyolith diversity in the Miaolingian, and morphological disparity also contracts in association with this reduction in diversity.

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Pyritized preservation of chancelloriids from the Cambrian Stage 3 of South China and implications for biomineralization

Yun

Cui

et al. 2021

Geobios

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The oldest Cambrian trilobite – brachiopod association in South China

Cited by 26 publications

References 75 publications

First Report of Small Shelly Fossils from the Cambrian Miaolingian Limestones (Zhangxia and Hsuzhuang Formations) in Yiyang County, Henan Province of North China

First Report of Small Shelly Fossils from the Cambrian Miaolingian Limestones (Zhangxia and Hsuzhuang Formations) in Yiyang County, Henan Province of North China

Morphological disparity and evolutionary patterns of Cambrian hyoliths

Pyritized preservation of chancelloriids from the Cambrian Stage 3 of South China and implications for biomineralization

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