Diverse labechiid stromatoporoids from the Upper Ordovician Xiazhen Formation of South China and their paleobiogeographic implications

2021 ◽  
pp. 1-26
Author(s):  
Juwan Jeon ◽  
Kun Liang ◽  
Jino Park ◽  
Stephen Kershaw ◽  
Yuandong Zhang
Keyword(s):  
New Species ◽  
South China ◽  
Endemic Species ◽  
North China ◽  
Late Ordovician ◽  
Jiangxi Province ◽  
Upper Ordovician ◽  
Three New Species

Abstract A diverse labechiid stromatoporoid assemblage that includes 16 species in 8 genera was found in the Upper Ordovician Xiazhen Formation (mid–late Katian) at Zhuzhai, Jiangxi Province of South China. The assemblage is characterized by a combination of (1) North China provincial species succeeding from their origination in the Darriwilian, including Pseudostylodictyon poshanense Ozaki, 1938, Labechia shanhsiensis Yabe and Sugiyama, 1930, Labechia variabilis Yabe and Sugiyama, 1930, and Labechiella regularis (Yabe and Sugiyama, 1930) and (2) South China endemic species, including three new species (Labechia zhuzhainus Jeon n. sp., Labechiella beluatus Jeon n. sp., Sinabeatricea luteolus Jeon n. gen. n. sp.), and four species in open nomenclature (Rosenella sp., Cystostroma sp., Pseudostylodictyon sp., and Labechia sp.). The finding of Labechiella gondwanense Jeon n. sp., Stylostroma bubsense Webby, 1991, Stylostroma ugbrookense Webby, 1991, and Thamnobeatricea gouldi Webby, 1991 in the formation indicates that Tasmania was closely related to South China and had a closer paleobiogeographical relation with peri-Gondwanan terranes than with Laurentia. In addition, the occurrences of Labechia altunensis Dong and Wang, 1984 and Stylostroma species support a close biogeographic link between Tarim and South China through the Middle to Late Ordovician interval, corresponding with the results from other fossil groups such as brachiopods, conodonts and chitinozoans. The diverse labechiids from the Xiazhen Formation improve our understanding of the diversity of Ordovician stromatoporoids in peri-Gondwanan terranes and the biogeographic affinities among Australia (especially Tasmania), Tarim, and South China. UUID: http://zoobank.org/4f46c91b-fa4c-4fe5-bea9-e409f1785677

Katian (Late Ordovician) conodonts on the northwestern margin of the North China Craton

2021 ◽  
pp. 1-22
Author(s):  
Zhihua Yang ◽  
Xiuchun Jing ◽  
Hongrui Zhou ◽  
Xunlian Wang ◽  
Hui Ren ◽  
...  
Keyword(s):  
North China Craton ◽  
North China ◽  
Late Ordovician ◽  
Carbonate Platforms ◽  
Upper Ordovician ◽  
The North ◽  
Low Latitudes ◽  
Northwestern Margin ◽  
Conodont Fauna ◽  
Stratigraphic Range

Abstract Upper Ordovician strata exposed from the Baiyanhuashan section is the most representative Late Ordovician unit in the northwestern margin of the North China Craton (NCC). In total, 1,215 conodont specimens were obtained from 24 samples through the Wulanhudong and Baiyanhuashan formations at the Baiyanhuashan section. Thirty-six species belonging to 17 genera, including Tasmanognathus coronatus new species, are present. Based on this material, three conodont biozones—the Belodina confluens Biozone, the Yaoxianognathus neimengguensis Biozone, and the Yaoxianognathus yaoxianensis Biozone—have been documented, suggesting that the Baiyanhuashan conodont fauna has a stratigraphic range spanning the early to middle Katian. The Baiyanhuashan conodont fauna includes species both endemic to North China and widespread in tropical zones, allowing a reassessment of the previous correlations of the Katian conodont zonal successions proposed for North China with those established for shallow-water carbonate platforms at low latitudes. UUID: http://zoobank.org/7cedbd4a-4f7a-4be6-912f-a27fd041b586

Avitograptus species (Graptolithina) from the Hirnantian (uppermost Ordovician) Anji Biota of South China and the evolution of Akidograptus and Parakidograptus

2020 ◽  
Vol 94 (5) ◽  
pp. 955-965 ◽  
Author(s):  
Lucy A. Muir ◽  
Yuandong Zhang ◽  
Joseph P. Botting ◽  
Xuan Ma
Keyword(s):  
New Species ◽  
South China ◽  
Zhejiang Province ◽  
The Other ◽  
New Combination ◽  
Upper Ordovician ◽  
Additional Species ◽  
Evolutionary Changes

AbstractThe latest Ordovician to earliest Silurian graptolite Avitograptus avitus is important in the biostratigraphy of the Ordovician–Silurian boundary interval. Two additional species of Avitograptus are described from the sponge-dominated Anji Biota of the Upper Ordovician Wenchang Formation (Metabolograptus persculptus Biozone) of Zhejiang Province, South China. One species, Avitograptus akidomorphus new species, is new; the other, Avitograptus acanthocystus new combination, which was previously placed in Climacograptus, is herein assigned to Avitograptus. The former species may represent the ancestral akidograptid because it is identical in thecal form to Akidograptus, but differs in the development of the proximal end. The evolutionary changes from Avitograptus avitus to Akidograptus and Parakidograptus involved distal movement of the origins of th11 and th12, thecal elongation, and greater outward inclination of the thecal walls.UUID: http://zoobank.org/81c433a0-9069-48d2-ae72-1267400cbf77.

Five new Lathys species (Araneae: Dictynidae) from South China and the first description of the male of Lathys spiralis Zhang, Hu & Zhang, 2012

Zootaxa ◽  
2018 ◽  
Vol 4500 (2) ◽  
pp. 151
Author(s):  
KEKE LIU ◽  
ZEYUAN MENG ◽  
YONGHONG XIAO ◽  
XIANG XU
Keyword(s):  
New Species ◽  
South China ◽  
Life Science ◽  
Nature Reserve ◽  
Jiangxi Province ◽  
Line Drawings ◽  
The Past ◽  
Animal Specimen ◽  
Science College ◽  
First Time

Dictynidae spiders were collected from Jinggang Mountain National Nature Reserve, Jiangxi Province, China in the past four years. Five new species are described and illustrated with photographs, SEMs and line drawings: Lathys adunca Liu spec. nov. (male), L. deltoidea Liu spec. nov. (female), L. fibulata Liu spec. nov. (female), L. huangyangjieensis Liu spec. nov. (male, female) and L. zhanfengi Liu spec. nov. (female). Both sexes of the species L. spiralis Zhang, Hu & Zhang, 2012 were collected from leaf litter in Jinggangshan University and the male is described for the first time. All specimens are deposited in the Animal Specimen Museum, Life Science College, at the Jinggangshan University (ASM-JGSU). 

scholarly journals Taxonomic updates and descriptions of four new Lophopini planthopper species (Hemiptera, Fulgoroidea, Lophopidae) from Yunnan province, South China

2016 ◽  
Author(s):  
Menglin Wang ◽  
Adeline Soulier-Perkins ◽  
Yinglun Wang ◽  
Thierry Bourgoin
Keyword(s):  
New Species ◽  
South China ◽  
Yunnan Province ◽  
Identification Key ◽  
Three New Species ◽  
One New Species

Taxonomic updates and descriptions of four new species from Yunnan, China are provided: three new species in the genus Pitambara Distant, 1906: P. triremiprocta Wang & Soulier-Perkins, sp. nov., P. impudica Wang & Bourgoin, sp. nov., P. tricorne Wang & Wang, sp. nov., and one new species in the genus Serida Walker, 1857: Serida parenthesisflexuosa Wang & Soulier-Perkins, sp. nov. A new identification key to Pitambara species is provided, as well as to the species of the genus Lacusa Stål, 1862. Lacusa yunnanensis Chou & Huang, 1985 stat. rev. is not considered as a synonym of the species L. fuscofasciata (Stål, 1854) anymore and Lacusa orientalis (Liang, 2000) is transferred to the genus Acothrura Melichar, 1915 as Acothrura orientalis (Liang, 2000) comb. nov.

The brachiopods Alwynella and Grorudia: homeomorphic plectambonitoids in the Middle and Upper Ordovician of Baltoscandia

2007 ◽  
Vol 98 (3-4) ◽  
pp. 271-280 ◽  
Author(s):  
Linda Hints ◽  
David A. T. Harper
Keyword(s):  
New Species ◽  
Baltic Sea ◽  
Late Ordovician ◽  
Drill Core ◽  
Upper Ordovician ◽  
The Baltic Sea ◽  
New Material ◽  
The Baltic ◽  
A New Species ◽  
Water Facies

ABSTRACTTwo Ordovician plectambonitoid genera, Alwynella and Grorudia, occur in drill core sections of Latvia in the East Baltic, and in exposures and loose blocks on the Swedish Island of Öland in the Baltic Sea. The new material confirms differences between the two taxa that are assigned herein to separate families, Alwynellidae fam. nov. and Grorudiidae Cocks & Rong, 1989. In particular, the undercut cardinalia separates Alwynella from Grorudia and indicates its proximity to the sowerbyellids. The genus Grorudia, which is externally similar to Alwynella, is more closely related to the palaeostrophomenines. A new species Grorudia morrisoni sp. nov. is established in the East Baltic. The specimens from Öland are included tentatively within the genus Grorudia due to lack of interiors. Both Alwynella and Grorudia were confined to deeper-water facies in the Baltic palaeobasin, within successions ranging in age from latest Mid (late Llanvirn) to earliest Late Ordovician (mid Caradoc).

Flexible crinoids from the Upper Ordovician Maquoketa Formation of the northern midcontinent and the evolution of early flexible crinoids

2001 ◽  
Vol 75 (2) ◽  
pp. 370-382 ◽  
Author(s):  
James C. Brower
Keyword(s):  
New Species ◽  
North America ◽  
Late Ordovician ◽  
Upper Ordovician ◽  
Middle Ordovician

Three flexible crinoids occur in the Upper Ordovician Maquoketa Formation of Illinois, Iowa, and Minnesota:Protaxocrinus girvanensisRamsbottom, 1961,Clidochirus anebosnew species, andProanisocrinus oswegoensis(Miller and Gurley, 1894).Protaxocrinus girvanensisis also found in the Upper Ordovician of Scotland which indicates that the ocean was narrow enough to allow at least one crinoid species to cross the barrier. The Upper Ordovician of North America and Scotland also share many common crinoid genera. Both phenetic and cladistic methods result in similar phylogenies of flexible crinoids.Protaxocrinuswas derived from a cupulocrinid ancestor during the Middle Ordovician.Clidochirusevolved fromProtaxocrinusor its ancestral stock prior to the Richmondian of the Late Ordovician. The RichmondianProanisocrinusand later anisocrinids are most closely related toClidochirusor its immediate predecessor. Thus, three major lineages of flexible crinoids,Protaxocrinus(taxocrinid group),Clidochirus(icthyocrinid), andProanisocrinus(anisocrinids and homalocrinids), appeared during the Ordovician. Despite their rarity during the Ordovician, all three flexible lineages survived the Latest Ordovician extinction, whereas their more abundant and successful cupulocrinid ancestors were eliminated.

Three new micro-endemic species of Paepalanthus (Paepalanthoideae, Eriocaulaceae) from Serra do Ambrósio, Minas Gerais, Brazil

Phytotaxa ◽  
2016 ◽  
Vol 247 (2) ◽  
pp. 118 ◽  
Author(s):  
FABIANE NEPOMUCENO COSTA ◽  
CAROLINE OLIVEIRA ANDRINO ◽  
MARCELO TROVÓ ◽  
LIVIA ECHTERNACHT ◽  
PAULO TAKEO SANO
Keyword(s):  
New Species ◽  
Endemic Species ◽  
Minas Gerais ◽  
Similar Species ◽  
Habitat Distribution ◽  
Espinhaço Range ◽  
Three New Species

We describe and illustrate three new species of Paepalanthus (Eriocaulaceae: Paepalanthoideae) from the Espinhaço Range: P. argyrotrychus, P. farinaceus and P. velutiphyllus, all endemic to Serra do Ambrósio, a mountain disjunct from the Espinhaço Range in the municipality of Rio Vermelho, Minas Gerais, Brazil. These species belong to Paepalanthus ser. Paepalanthus (=Paepalanthus [unranked] Variabiles). We provide detailed descriptions and illustrations for each taxon, as well as comments on habitat, distribution, morphology, conservation and their affinities to the most morphologically similar species.

Three new species of eriophyoid mites (Acari: Eriophyoidea) from South China

2019 ◽  
Vol 24 (10) ◽  
pp. 2329-2347
Author(s):  
FENGPING QIN ◽  
MUHAMMAD ASFAND YAR ◽  
SHUAI TANG ◽  
GUOQUAN WANG
Keyword(s):  
New Species ◽  
South China ◽  
Host Plants ◽  
Eriophyoid Mites ◽  
Three New Species

Three new species of eriophyoid mites from South China are described and illustrated: Acadicrus sterculus sp. nov. infesting Sterculia lanceolata Cav. (Sterculiaceae) belongs to subfamily Phyllocoptinae (Eriophyidae), Diptacus cinnamomus sp. nov. infesting Cinnamomum japonicum Sieb. (Lauraceae) and Diptilomiopus heteropanax sp. nov. infesting Heteropanax fragrans (Roxb.) Seem. (Araliaceae) belong to Diptilomiopinae (Diptilomiopidae). All are vagrants causing no apparent damage to their host plants.

Additions to the Flora of China: three new species of Elatostema (Urticaceae) from Guangxi

Phytotaxa ◽  
2013 ◽  
Vol 147 (1) ◽  
pp. 1 ◽  
Author(s):  
YI-GANG WEI ◽  
Alex Monro ◽  
WEN-TSAI WANG
Keyword(s):  
New Species ◽  
Endemic Species ◽  
Conservation Status ◽  
Guangxi Province ◽  
Flora Of China ◽  
Three New Species ◽  
Rare Endemic

Three new species are described and illustrated and their conservation status assessed: Elatostema laevicaule W.T. Wang, A.K. Monro & Y.G. Wei, E. androstachyum W.T. Wang, A.K. Monro & Y.G. Wei and E. heterocladum W.T. Wang, A.K. Monro & Y.G. Wei. All are rare endemic species from Guangxi Province, China, and are only known only from their type localities. E. laevicaule is most similar to E. filipes and is assessed as Vulnerable (VU), E. androstachyum is most similar to E. parvum and is assessed as Vulnerable (VU); E. heterocladum is most similar to both E. androstachyum and E. luxiense and is assessed as Vulnerable (VU).

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