scholarly journals A new species of Platysiagum from the Luoping Biota (Anisian, Middle Triassic, Yunnan, South China) reveals the relationship between Platysiagidae and Neopterygii

2018 ◽  
Vol 156 (4) ◽  
pp. 669-682 ◽  
Author(s):  
W. WEN ◽  
S. X. HU ◽  
Q. Y. ZHANG ◽  
M. J. BENTON ◽  
J. KRIWET ◽  
...  
Keyword(s):  
Yunnan Province ◽  
Southwest China ◽  
Middle Triassic ◽  
New Materials ◽  
Western Tethys ◽  
The Family ◽  
Tethys Ocean ◽  
Anatomical Information ◽  
The Relationship ◽  
A New Species

AbstractFour complete platysiagid fish specimens are described from the Luoping Biota, Anisian (Middle Triassic), Yunnan Province, southwest China. They are small fishes with bones and scales covered with ganoine. All characters observed, such as nasals meeting in the midline, a keystone-like dermosphenotic, absence of post-rostral bone, two infraorbitals between dermosphenotic and jugal, large antorbital, and two postcleithra, suggest that the new materials belong to a single, new Platysiagum species, P. sinensis sp. nov. Three genera are ascribed to Platysiagidae: Platysiagum, Helmolepis and Caelatichthys. However, most specimens of the first two genera are imprints or fragmentary. The new, well-preserved specimens from the Luoping Biota provide more detailed anatomical information than before, and thus help amend the concept of the Platysiagidae. The Family Platysiagidae was previously classed in the Perleidiformes. Phylogenetic analysis indicates that the Platysiagidae is a member of basal Neopterygii, and its origin seems to predate that of Perleidiformes. Moreover, platysiagid fishes are known from the Middle Triassic of the western Tethys region. The newly found specimens of platysiagids from Luoping provide additional evidence that both eastern and western sides of the Tethys Ocean were biogeographically more connected than previously thought.

A New Species ofProtamphisopusNicholls (Crustacea, Isopoda, Phreatoicidea) from Middle Triassic Luoping Fauna of Yunnan Province, China

2010 ◽  
Vol 84 (5) ◽  
pp. 1003-1013 ◽  
Author(s):  
Wan-Lu Fu ◽  
George D. F. Wilson ◽  
Da-Yong Jiang ◽  
Yuan-Lin Sun ◽  
Wei-Cheng Hao ◽  
...  
Keyword(s):  
New Species ◽  
Fresh Water ◽  
Yunnan Province ◽  
Middle Triassic ◽  
Marine Habitat ◽  
Marine Fauna ◽  
Biogeographic Patterns ◽  
The Family ◽  
A New Species ◽  
Stratigraphic Range

Fossil isopod crustaceans in the suborder Phreatoicidea have a known stratigraphic range from the Carboniferous to the Jurassic. Until now, all Mesozoic records of this group were thought to occur in fresh water habitats. A new phreatoicidean isopod fossil of the Triassic Luoping marine fauna, Yunnan Province, China, is described. The new species, based on several exceptionally complete specimens, is assigned to the genusProtamphisopusNicholls and the family Amphisopidae Nicholls. This Chinese record is the first report of a Mesozoic-age phreatoicidean isopod outside of Gondwanan terranes, requiring a revision of known biogeographic patterns of the Phreatoicidea. Whether this record is from a marine habitat or is the result of a secondary deposition is not certain.SottyellaRacheboef, Schram and Vidal from the Carboniferous (Stephanian) Lagerstätte of Montceaules-Mines that was assigned to this suborder may be a decapod. Therefore, it has no relationship to this new species.

A new shrimp (Decapoda, Dendrobranchiata, Penaeoidea) from the Middle Triassic of Yunnan, southwest China

2013 ◽  
Vol 87 (4) ◽  
pp. 603-611 ◽  
Author(s):  
Jinyuan Huang ◽  
Rodney M. Feldmann ◽  
Carrie E. Schweitzer ◽  
Shixue Hu ◽  
Changyong Zhou ◽  
...  
Keyword(s):  
New Species ◽  
Type Species ◽  
Southwest China ◽  
Middle Triassic ◽  
Marine Ecosystem ◽  
New Taxon ◽  
Western Tethys ◽  
Phylogeny And Evolution ◽  
The City ◽  
A New Species

A new penaeoid shrimp collected from the Middle Triassic Member II of the Guanling Formation in the vicinity of the city of Luxi, Yunnan, southwest China, is a new species,Aeger luxiin. sp. The new species possesses prominent spinose third maxillipeds, which is one of the typical characteristics ofAeger. The new species differs from the type species,Aeger tipulariusfrom the Jurassic Solnhofen Plattenkalk, in having a long, smooth rostrum with no subrostral spines. The new taxon increases the diversity of Chinese decapods, and further expands our knowledge of the phylogeny and evolution of the Mesozoic decapods. The find is the first complete specimen ofAegerin the Middle Triassic, and reveals a close biogeographic connection of the marine ecosystem between Eastern and Western Tethys.

scholarly journals New species of Sangiorgioichthys Tintori and Lombardo, 2007 (Neopterygii, Semionotiformes) from the Anisian of Luoping (Yunnan Province, South China)

Zootaxa ◽  
2011 ◽  
Vol 2749 (1) ◽  
pp. 25 ◽  
Author(s):  
ADRIANA LÓPEZ-ARBARELLO ◽  
ZUO-YU SUN ◽  
EMILIA SFERCO ◽  
ANDREA TINTORI ◽  
GUANG-HUI XU ◽  
...  
Keyword(s):  
New Species ◽  
South China ◽  
Yunnan Province ◽  
Middle Triassic ◽  
Single Species ◽  
Western Tethys ◽  
The Alps ◽  
Triangular Area ◽  
Fitting In ◽  
A New Species

We report on a new species of the neopterygian genus Sangiorgioichthys Tintori and Lombardo, 2007, from middle Anisian (Pelsonian) deposits in South China (Luoping County, Yunnan Province). Sangiorgioichthys was previously known from a single species, S. aldae, from the late Ladinian of the Monte San Giorgio (Italy and Switzerland). The recognition of the new species helped to improve the diagnosis of the genus, which is mainly characterized by the presence of broad posttemporal and supracleithral bones, one or two suborbital bones occupying a triangular area ventral to the infraorbital bones and lateral to the quadrate, and elongate supramaxilla fitting in a an excavation of the dorsal border of the maxilla. Sangiorgioichthys sui n. sp. differs from the type species in having two pairs of extrascapular bones, the medial pair usually fused to the parietals, maxilla with a complete row of small conical teeth, long supramaxilla, more than half of the length of the maxilla, only two large suborbital bones posterior to the orbit, and flank scales with finely serrated posterior borders. With the discovery of S. sui n. sp., the number of fish genera shared by the Anisian/Ladinian deposits in the Alps and the Anisian deposits in South China increases, including not only the cosmopolitan Birgeria and Saurichthys, but also, among others, the subholosteans Colobodus (so far only in Panxian), Luopingichthys (so far only in Luoping), Peltopleurus, Habroichthys, and the very specialized neopterygians Placopleurus and Marcopoloichthys (only in Luoping). Therefore, although several fish taxa remain to be studied in the Chinese faunas, the so far available evidence indicates close biogeographic relationship between the Middle Triassic marine faunas of the Western Tethys region.

scholarly journals DESCRIPTION OF A NEW SPECIES OF THE GENUS ANATEMNUS BEIER, 1932 (PSEUDOSCORPIONES: ATEMNIDAE) FROM CHINA

2016 ◽  
Vol 7 ◽  
pp. 567-572
Author(s):  
Zhizhong Gao ◽  
Feng Zhang
Keyword(s):  
New Species ◽  
Yunnan Province ◽  
Southwest China ◽  
Morphological Characters ◽  
The Family ◽  
A New Species ◽  
Detailed Diagnosis

A new pseudoscorpion species, Anatemnus reni sp. nov., belonging to the family Atemnidae Kishida, 1929, is reported from Yunnan Province, Southwest China. The detailed diagnosis, description and illustrations of important morphological characters are presented in this paper.

scholarly journals Meiogyne oligocarpa (Annonaceae), a new species from Yunnan, China

PeerJ ◽  
2021 ◽  
Vol 9 ◽  
pp. e10999
Author(s):  
Bine Xue ◽  
Yun-Yun Shao ◽  
Chun-Fen Xiao ◽  
Ming-Fai Liu ◽  
Yongquan Li ◽  
...  
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
Yunnan Province ◽  
Southwest China ◽  
A New Species

Meiogyne oligocarpa sp. nov. (Annonaceae) is described from Yunnan Province in Southwest China. It is easily distinguished from all previously described Meiogyne species by the possession of up to four carpels per flower, its bilobed, sparsely hairy stigma, biseriate ovules and cylindrical monocarps with a beaked apex. A phylogenetic analysis was conducted to confirm the placement of this new species within Meiogyne. Meiogyne oligocarpa represents the second species of Meiogyne in China: a key to the species of Meiogyne in China is provided to distinguish it from Meiogyne hainanensis. Paraffin sectioning was undertaken to study the anatomy of the corrugations on the inner petals of Meiogyne oligocarpa to verify whether they are glandular.

scholarly journals Leaf anatomy of a late Palaeozoic cycad

2017 ◽  
Vol 13 (11) ◽  
pp. 20170456 ◽  
Author(s):  
Zhuo Feng ◽  
Yong Lv ◽  
Yun Guo ◽  
Hai-Bo Wei ◽  
Hans Kerp
Keyword(s):  
Leaf Anatomy ◽  
Leaf Morphology ◽  
Yunnan Province ◽  
Southwest China ◽  
Upper Permian ◽  
Fossil Leaves ◽  
Leaf Surfaces ◽  
The Family ◽  
Clear Differentiation ◽  
Anatomical Evidence

Today, cycads are a small group of gymnospermous plants with a limited distribution in the (sub)tropics, but they were major constituents of Mesozoic floras. Fossil leaves sporadically found in latest Carboniferous and Permian floras have putatively been ascribed to cycads. However, their true affinity remains unclear due to the lack of anatomical evidence. Virtually all modern cycads have pinnate leaves, but this type of leaf morphology is by no means unique for cycads. Pinnate leaves of Plagiozamites oblongifolius Halle 1927 with well-preserved cuticles showing the epidermal anatomy are here described from the upper Permian Xuanwei Formation of Yunnan Province, Southwest China. The cuticles show a clear differentiation into costal and intercostal zones; stomata are confined to the intercostal zones on both the upper and lower leaf surfaces. The external morphology and the epidermal anatomy of these fossil leaves are closely comparable with those of extant cycads, particularly members of the family Zamiaceae.

A new species of Behningia Lestage, 1929 (Ephemerotera: Behningiidae) from China

Zootaxa ◽  
2019 ◽  
Vol 4671 (3) ◽  
pp. 420-426
Author(s):  
XIONGDONG ZHOU ◽  
MIKE BISSET ◽  
MENGZHEN XU ◽  
ZHAOYIN WANG
Keyword(s):  
New Species ◽  
Yunnan Province ◽  
The Third ◽  
The Family ◽  
Biogeographic Region ◽  
Nujiang River ◽  
A New Species ◽  
Burrowing Mayfly

A new species of sand-burrowing mayfly (Ephemeroptera: Behningiidae), Behningia nujiangensis Zhou & Bisset, is described based on more than 50 nymphs collected from the Nujiang River in Yunnan Province, P.R. China. This is the first species of the family Behningiidae discovered in China. It is also the second species of genus Behningia, and the third species of the family Behningiidae collected from the Oriental biogeographic region. The shapes of the labrum and the labium in B. nujiangensis are markedly different from those found in other species of Behningia. Differences in the mandibles, the galea-lacina of maxillae, and both the prothoracic and metathoracic legs differentiate B. nujiangensis from both B. baei and B. ulmeri. The biology of and conservation challenges for B. nujiangensis are also briefly discussed. 

scholarly journals Genetic diversity among flue-cured tobacco cultivars on the basis of AFLP markers

2009 ◽  
Vol 45 (No. 4) ◽  
pp. 155-159 ◽  
Author(s):  
X.Z. Liu ◽  
C.S. He ◽  
Y.M. Yang ◽  
H.Y. Zhang
Keyword(s):  
Genetic Diversity ◽  
Yunnan Province ◽  
Southwest China ◽  
Germplasm Conservation ◽  
Research Centre ◽  
Aflp Data ◽  
Breeding Research ◽  
Polymorphic Bands ◽  
Relationship Of ◽  
The Relationship

AFLP analyses were used to assess the genetic similarity among selected accessions at the South China Tobacco Breeding Research Centre (Yunnan province, Southwest China). 154 AFLP polymorphic fragments out of 561 fragments were used to assess the genetic diversity among 28 tobacco accessions. The average number of polymorphic bands per AFLP primer pair was 15.4. AFLPs seemed to be an effective classification tools for germplasm conservation and breeding. Limited genetic variation was detected within this group of accessions. The relationship of cultivars was estimated by cluster analysis based on AFLP data.

Helmolepis cyphognathus, sp. nov., a new platysiagid actinopterygian from the Lower Triassic Sulphur Mountain Formation (British Columbia, Canada)

2005 ◽  
Vol 42 (1) ◽  
pp. 25-36 ◽  
Author(s):  
Andrew G Neuman ◽  
Raoul J Mutter
Keyword(s):  
British Columbia ◽  
New Species ◽  
Central Europe ◽  
Middle Triassic ◽  
Lower Triassic ◽  
Western Canada ◽  
Early Triassic ◽  
East Greenland ◽  
The Family ◽  
A New Species

A new species of stem actinopterygian, Helmolepis cyphognatus sp. nov., is reported from the Lower Triassic Sulphur Mountain Formation of western Canada (probably Smithian). This taxon differs from the only other known Early Triassic platysiagid, H. gracilis from the Lower Triassic Wordie Creek Formation of East Greenland (Griesbachian), in counts of branchiostegal rays, shape of the maxilla, shape (and possibly counts) of extrascapulars, and the size ratio of major opercular bones. In spite of their overall unfavorable preservation, the numerous available specimens amend our knowledge of the little known genus Helmolepis considerably: it has become evident that the morphology of Helmolepis cyphognatus sp. nov. comes closest to Platysiagum minus (Middle Triassic Besano Formation of central Europe). This study suggests placement of the two genera in the family Platysiagidae. Investigation of this new species also shows certain features of the cheek and the caudal fin are more primitive than previously believed, whereas the snout region is probably derived but of yet uncertain affinities in Helmolepis.

First record of the spider genus Wolongia Zhu, Kim & Song, 1997 from India with the description of a new species (Araneae, Tetragnathidae)

Zootaxa ◽  
2018 ◽  
Vol 4407 (1) ◽  
pp. 145
Author(s):  
JOBI J. MALAMEL ◽  
KARUNNAPPILLI SHAMSUDHEEN NAFIN ◽  
PRADEEP M. SANKARAN ◽  
POTHALIL A. SEBASTIAN
Keyword(s):  
New Species ◽  
Yunnan Province ◽  
Southwest China ◽  
First Record ◽  
Southern India ◽  
Nominal Species ◽  
Ramsar Convention ◽  
International Importance ◽  
Kerala State ◽  
A New Species

Zhu et al. (1997) erected the tetragnathid genus Wolongia to accommodate Wolongia guoi Zhu, Kim & Song, 1997 and Wolongia wangi Zhu, Kim & Song, 1997 collected from the Sichuan and Shaanxi Provinces in China. In 2009, Ping et al. described Wolongia odontodes from the Gaoligong Mountains and remained with a nominal representation after the erection of the genus. This situation was somewhat rectified by Jin-long Wan & Xian-jin Peng (2013) reporting seven new species from the Gaoligong Mountains (Yunnan Province, southwest China). The genus currently with ten nominal species; three are known only from females, while seven are from both sexes (World Spider Catalog 2017). During our survey in Pathiramanal Island we found an undescribed Wolongia species. This is one of the most diverse areas of the Kerala state of Southern India, situated in the Vembanad Lake, a Ramsar Convention (2013) site (wetland of international importance). In this paper, we describe this new species and provide the first report of Wolongia from India. 

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