Early Carboniferous spiriferoid brachiopods from the Qaidam Basin, Northwest China: Taxonomy, biostratigraphy and biogeography

Shi, G.R.; Chen, Zhong‐Qiang; Lee, Sangmin; Zhan, Lufeng

doi:10.1016/j.palwor.2016.07.003

Cited by 6 publications

(4 citation statements)

References 20 publications

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“…In contrast, its relatively low ventral interarea, low fold, and distinctive costation are comparable with those of Grandispirifer Yang, 1959. Within that genus, our material is very close to G. qaidamensis Lee, Shi & Chen in Shi et al (2016) from the Serpukhovian of the Qaidam Basin of Qinghai, in having an extremely transverse outline, but further comparison is difficult due to lack of ventral valve.…”

Section: Systematic Palaeontologymentioning

confidence: 53%

“…The Qaidam Basin of the Qinghai, north‐western China is one of the tectonic terranes of Central Asia domain, and was closely situated at the south of the Junggar Basin of northern Xinjiang during the Carboniferous (Chen et al, 2003; Shi et al, 2016; Xiao et al, 2008). Abundant Early Carboniferous brachiopods have been documented from the Tournaisian Changchenggou Formation (Chen et al, 2003), including 10 species in nine genera: Athyris ?…”

Section: Faunal Correlationsmentioning

confidence: 99%

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Early Carboniferous brachiopod fauna from the Altai Mountains, northern Xinjiang, Central Asia: Systematics, and palaeobiogeographic and palaeogeographical implications

2021

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A diverse brachiopod fauna, comprising 37 species in 35 genera, is described from the Hongshanzui Formation of the Chinese Altai Mountains area, northern Xinjiang, north-western China. A new species Xinjiangiproductus? junggarensis sp. nov. is erected. Faunal correlation constrains the Altai brachiopod fauna and its bearing formation as Tournaisian (Early Carboniferous) in age. The Altai brachiopod fauna is dominated by the Siberian elements that are also very common in the Kuznetsk Basin, Siberia, implying the same palaeobiogeographic province. In contrast, it shares much fewer species with the coeval assemblages reported from the Junggar terranes, suggesting a different palaeobiogeographic province from the latter. Moreover, the Altai fauna appears with high similarities to the coeval faunas reported from the Baoshan Block of western Yunnan, south-western China, and, to a lesser context, resembles coeval faunas documented from north-eastern Japan, North American mid-continent, and Australia. In contrast, it shares very few elements with those reported from the Qaidam Basin, Tarim Basin, and South China. The rather high faunal affinity between the Altai area and Kuznetsk Basin indicates that these two regions were likely apart closely to one another during the Tournaisian, implying that the Altai area may have accreted to the Siberian Craton prior to the Tournaisian. The low faunal affinity between the western Junggar and Altai areas reveals that they both did not belong to the same palaeobiogeographic province, and the western Junggar terrane did not accrete to the Altaids, at least in the Tournaisian.

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Section: Systematic Palaeontologymentioning

confidence: 53%

Section: Faunal Correlationsmentioning

confidence: 99%

Early Carboniferous brachiopod fauna from the Altai Mountains, northern Xinjiang, Central Asia: Systematics, and palaeobiogeographic and palaeogeographical implications

2021

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“…At the junction between the crura and primary lamellae, there is a twist or rotation in taxa such as Eochoristites , Spinocyrtia Frederiks, 1916, Martinia M'Coy, 1844, Neospirifer Frederiks, 1924, and Gypospirifer Cooper and Grant, 1976a (Ager and Riggs, 1964; Fig. 2.3), evident jugal processes in Eospirifer , Striispirifer , and Anthracothyrina Legrand-Blain, 1984 (Rong and Zhan, 1996; Shi et al, 2016), and a change from being rod-like to plate-like in Crurithyris , Ladjia Veevers, 1959, and Weiningia (Ma, 2009; Figs. 3.2, 4, 5.9, 5.11).…”

Section: Resultsmentioning

confidence: 99%

“…Among all superfamilies, only the genera belonging to Cyrtospiriferoidea, Ambocoelioidea, and Reticularioidea are not equipped with jugal processes, but this may reflect the limited number of taxa examined in detail. The cross angle between the paired jugal process, which was previously used to describe the angle between these structures in the cross-section (Rong and Zhan, 1996), is variable among different genera, such as Eospirifer , Striispirifer , Anthracothyrina , Costispirifer Cooper, 1942, and Johndearia Waterhouse, 1998 (Hall and Clarke, 1894; Campbell, 1961; Rong and Zhan, 1996; Shi et al, 2016). According to those species in Eospirifer recorded by Rong and Zhan (1996), this angle could be variable among congeneric species as well.…”

Section: Resultsmentioning

confidence: 99%

Brachial supporting structure of Spiriferida (Brachiopoda)

et al. 2020

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The filter-feeding organ of some extinct brachiopods is supported by a skeletal apparatus called the brachidium. Although relatively well studied in Atrypida and Athyridida, the brachidial morphology is usually neglected in Spiriferida. To investigate the variations of brachidial morphology in Spiriferida, 65 species belonging to eight superfamilies were analyzed. Based on the presence/absence of the jugal processes and normal/modified primary lamellae of the spiralia, four types of brachidium are recognized. Type-I (with jugal processes) and Type-II (without jugal processes), both having normal primary lamellae, could give rise to each other by losing/re-evolving the jugal processes. Type-III, without jugal processes, originated from Type-II through evolution of the modified lateral-convex primary lamellae, and it subsequently gave rise to Type-IV by evolving the modified medial-convex primary lamellae. The evolution of brachidia within individual evolutionary lineages must be clarified because two or more types can be present within a single family. Type-III and Type-IV are closely associated with the prolongation of the crura, representing innovative modifications of the feeding apparatus in response to possible shift in the position of the mouth towards the anterior, allowing for more efficient feeding on particles entering the mantle cavity from the anterior gape. Meanwhile, the modified primary lamellae adjusted/regulated the feeding currents. The absence of spires in some taxa with Type-IV brachidium might suggest that they developed a similar lophophore to that in some extant brachiopods, which can extend out of the shell.

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The coupled evolution of mid- to late Holocene temperature and moisture in the southeast Qaidam Basin

et al. 2019

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Early Carboniferous spiriferoid brachiopods from the Qaidam Basin, Northwest China: Taxonomy, biostratigraphy and biogeography

Cited by 6 publications

References 20 publications

Early Carboniferous brachiopod fauna from the Altai Mountains, northern Xinjiang, Central Asia: Systematics, and palaeobiogeographic and palaeogeographical implications

Early Carboniferous brachiopod fauna from the Altai Mountains, northern Xinjiang, Central Asia: Systematics, and palaeobiogeographic and palaeogeographical implications

Brachial supporting structure of Spiriferida (Brachiopoda)

The coupled evolution of mid- to late Holocene temperature and moisture in the southeast Qaidam Basin

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