A new species of Chasmosaurus (Dinosauria: Ceratopsia) from the Dinosaur Park Formation of southern Alberta

2001 ◽  
Vol 38 (10) ◽  
pp. 1423-1438 ◽  
Author(s):  
Robert B Holmes ◽  
Catherine Forster ◽  
Michael Ryan ◽  
Kieran M Shepherd
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
Bone Resorption ◽  
The Other ◽  
Posterior Portion ◽  
Southern Alberta ◽  
Posterior Parietal ◽  
Dinosaur Park Formation ◽  
A New Species

Chasmosaurus irvinensis (sp. nov.) is distinguished from other species of this genus by the possession of a broad snout, absence of a brow horn (the position of which is occupied by a pit or rugosities suggestive of bone resorption), broadly rounded and open jugal notch, subrectangular squamosal, straight posterior parietal bar bearing 10 epoccipitals, eight of which are flattened, strongly curved anterodorsally, and nearly indistinguishably coossified to their neighbours, and small, transversely oriented parietal fenestrae restricted to the posterior portion of the frill. This species, restricted to the upper part of the Dinosaur Park Formation, is significantly younger than the other recognized Canadian Chasmosaurus species, C. belli and C. russelli. Phylogenetic analysis shows that C. irvinensis is most closely related to the other Canadian Chasmosaurus species and more distantly related to Chasmosaurus mariscalensis from Texas.

Aphanomyces brasiliensis sp. nov. (Verrucalvaceae, Saprolegniales): a new species from Brazilian Atlantic Rainforest areas

Phytotaxa ◽  
2019 ◽  
Vol 415 (4) ◽  
pp. 208-216
Author(s):  
CARMEN LIDIA AMORIM PIRES-ZOTTARELLI ◽  
DÉBORA R. S. COLOMBO ◽  
SARAH C. O. DA PAIXÃO ◽  
POLIANA O. VENTURA ◽  
MARCELA C. BORO ◽  
...  
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
Farming System ◽  
The Other ◽  
Atlantic Rainforest ◽  
Paulo State ◽  
Freshwater Bodies ◽  
A New Species ◽  
Brazilian Atlantic Rainforest ◽  
Soil And Water

In this study, Aphanomyces brasiliensis is proposed as a new species. It was collected from soil and water samples of a trout farming system located in Atlantic Rainforest areas, São Paulo State, Brazil. This species is mainly characterized by the presence of commonly short and unbranched oogonial stalks, antheridia usually androgynous and monoclinous with clavate, bell-shaped or cylindrical antheridial cells. We also collected Aphanomyces helicoides, A. raphani and A. stellatus from samples of submerged leaves, surface sediment and water in freshwater bodies. All species were isolated growing on cellulosic and/or keratinous substrates used as bait. Phylogenetic analysis of the ITS (rDNA) region showed that the new species and the other Brazilian isolates clustered within the Aphanomyces clade.

A new species of Rock Gecko genus Cnemaspis (Squamata: Gekkonidae) from Western Sarawak, Malaysia

Zootaxa ◽  
2017 ◽  
Vol 4258 (6) ◽  
pp. 525 ◽  
Author(s):  
TAKAKI KURITA ◽  
KANTO NISHIKAWA ◽  
MASAFUMI MATSUI ◽  
TSUTOMU HIKIDA
Keyword(s):  
Mitochondrial Dna ◽  
New Species ◽  
The Other ◽  
Unique Combination ◽  
Geographic Isolation ◽  
Anterior Portion ◽  
Posterior Portion ◽  
Dna Phylogeny ◽  
A New Species ◽  
Malaysian Borneo

A new species of Asian rock gecko, genus Cnemaspis, is described from Padawan, western Sarawak, Malaysian Borneo. The new species forms a clade with C. paripari and C. nigridia of the C. nigridia group in a mitochondrial DNA phylogeny and is similar to them morphologically in some characters such as caudal scalation. It differs from the other Asian Cnemaspis species in its unique combination of snout–vent length (up to 62.7 mm), 4–9 precloacal pores in males, keeled subcaudals with an enlarged, smooth, median row, presence of ventrolateral caudal tubercles, and coloration (head and upper flanks dark-yellow; anterior portion of tail black; posterior portion of tail white with black, paravertebral blob). Phylogenetic relationships within the C. nigridia group and the distributional ranges of species within the group suggest allopatric speciation by geographic isolation.

Molecular phylogeny of the genus Rhabdosciadium (Apiaceae) with description of a new species R. anatolyi from Hakkâri province, eastern Turkey

Phytotaxa ◽  
2017 ◽  
Vol 331 (2) ◽  
pp. 253
Author(s):  
DMITRY LYSKOV ◽  
EUGENE KLJUYKOV ◽  
EBRU DOĞAN GÜNER ◽  
TAHIR SAMIGULLIN
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
Molecular Phylogeny ◽  
Taxonomic Status ◽  
The Other ◽  
Monophyletic Group ◽  
Geographical Range ◽  
Eastern Turkey ◽  
Molecular Phylogenetic ◽  
A New Species

Six species of the genus Rhabdosciadium (Apiaceae) were studied by molecular phylogenetic analysis. The taxonomic status of each of them has been confirmed, the genus Rhabdosciadium turns out as a well-supported monophyletic group closely related to the genera Aegopodium, Caropodium, Carum, Falcaria, Fuernrohria, Gongylosciadium, Grammosciadium s.s., Hladnikia, Olymposciadium, etc. Rhabdosciadium anatolyi sp. nov. is described and illustrated as a new species from Hakkâri province, eastern Turkey. It differs from the other taxa of the genus, in addition to its unique geographical range, in the large terminal leaf lobes with regularly serrated margin, mainly ternate primary basal segments of leaves, and long internodes.

scholarly journals New psychropotid species (Echinodermata Holothuroidea Elasipodida) of the Western Pacific with phylogenetic analyses

2021 ◽  
Author(s):  
Chuan Yu ◽  
Dongsheng Zhang ◽  
Ruiyan Zhang ◽  
Chunsheng Wang
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
Deep Sea ◽  
Phylogenetic Analyses ◽  
The Other ◽  
Western Pacific ◽  
Morphological Examination ◽  
The Family ◽  
The Western Pacific ◽  
A New Species

Holothurians of the family Psychropotidae are widely distributed, but remain least studied deep-sea holothurians. On an expedition in the Western Pacific, six psychropotid specimens were collected by the Jiaolong human operated vehicle (HOV). Through morphological examination, four of them were identified as a new species, Benthodytes jiaolongi sp. nov., which was characterized as having minute papillae, narrow brims, and terminal anus; the ossicles were either rods or primary crosses. The remaining two specimens were identified as Psychropotes verrucicaudatus Xiao, Gong, Kou & Li, 2019, which was first recorded at the Kyushu-Palau Ridge. The phylogenetic analysis confirmed the classification status of B. jiaolongi and P. verrucicaudatus, and indicated a paraphyletic relationship within the genus Benthodytes. The new species clustered with Benthodytes sanguinolenta and was separated from the clade containing the other Benthodytes species.

A new species of Tetrataenium (Tordyliinae, Apiaceae) from SW Yunnan, China, based on morphological and molecular data

Phytotaxa ◽  
2021 ◽  
Vol 491 (1) ◽  
pp. 85-91
Author(s):  
ZE-HUAN WANG ◽  
YI WANG ◽  
BAO-LIN LIU ◽  
CHAO-HE WANG ◽  
XIAN-GUO FU
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
Molecular Data ◽  
Sensu Stricto ◽  
The Other ◽  
Molecular Phylogenetic Analysis ◽  
Molecular Phylogenetic ◽  
Nuclear Its ◽  
Morphological And Molecular Data ◽  
A New Species

Tetrataenium mianguaqi, a traditionally used medicinal herb in Cangyuan County, SW Yunnan, China, is described as a species new to science and illustrated. Molecular phylogenetic analysis based on nuclear ITS well supports its belonging to Tetrataenium sensu stricto. The new species can be easily distinguished by its unique peltate, palmatilobate basal and lower leaves from the other five Chinese Tetrataenium species.

Ordovician proetide trilobite Dimeropyge, with a new species from northwestern Canada

1994 ◽  
Vol 68 (3) ◽  
pp. 541-556 ◽  
Author(s):  
Brian D. E. Chatterton
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
The Other ◽  
Upper Ordovician ◽  
Additional Material ◽  
Larval Stages ◽  
Lower Ordovician ◽  
Close Relationship ◽  
A New Species ◽  
Traditional Manner

Dimeropyge öpik, 1937, is a genus currently composed of at least 14 similar Middle (predominantly) to possibly lowest Upper Ordovician species from Laurentia (13 species) and Baltica (one species). Possible Lower Ordovician specimens have been illustrated by Ross (1951). Dimeropyge clintonensis Shaw, 1968, is redescribed, based upon additional material of mature topotypes. A new species of Dimeropyge, D. speyeri, is proposed for material from the Esbataottine Formation in the Mackenzie Mountains, northwestern Canada, previously described as D. clintonensis. A phylogenetic analysis of 10 of the 14 species of this genus is presented (the other species are less completely known, and are related to the analyzed species in a more traditional manner). Ontogenies from protaspid to holaspid stages are provided for D. clintonensis, D. speyeri, and D. virginiensis Whittington and Evitt, 1954. The larval stages of these species are very similar, supporting the close relationship between species assigned to Dimeropyge.

Study of mononchids from Iran, with description of Mylonchulus kermaniensis sp. n. (Nematoda: Mononchida)

Zootaxa ◽  
2013 ◽  
Vol 3599 (6) ◽  
pp. 519-534 ◽  
Author(s):  
EBRAHIM SHOKOOHI ◽  
ABDOLRAHMAN MEHRABI-NASAB ◽  
MAHDIEH MIRZAEI ◽  
VLADA PENEVA
Keyword(s):  
New Species ◽  
Body Length ◽  
18S Rdna ◽  
Molecular Study ◽  
The Other ◽  
Soil Nematodes ◽  
Posterior Portion ◽  
Female Tail ◽  
New Geographical Record ◽  
A New Species

During a survey of soil nematodes in Iran, three species of predatory nematodes, including a new species of the genus Mylonchulus Cobb, 1916 were recovered. Mylonchulus kermaniensis sp. n. is characterised by its body length (1.2–1.4 mm), six rows of rasp-like denticles, the sixth line consisting of four denticles, female tail slightly sigmoid, sharply bent ventrad with digitate posterior portion slightly but clearly bent dorsad, (37–49 μm long, c=27.9–38.9, c'=1.2–1.7) with a terminal opening of spinneret. Two advulval papillae present, one is pre-vulval and the other one is located posterior to vulva. Furthermore, two other mononchid species namely M. cf. hawaiiensis (Cassidy, 1931) Goodey, 1951 and Mononchus truncatus Bastian, 1865 were also recovered from soil in the province of Kerman, Iran, the former representing a new geographical record for Iran. Measurements and illustration are provided for these three species. Molecular study of 18S rDNA region of M. cf. hawaiiensis demonstrated that the Iranian population compared with the nearest populations identified as M. hawaiiensis from Japan, shows 5 to 8 nucleotide differences. In addition, phylogeny of Mylonchulus is discussed and a checklist of the species of Mononchida from Iran is provided.

A New Species of Physeterostemon (Melastomataceae) from Bahia, Brazil, with Notes on the Phylogeny of the Genus

2009 ◽  
Vol 34 (2) ◽  
pp. 324-329 ◽  
Author(s):  
André M. Amorim ◽  
Renato Goldenberg ◽  
Fabián A. Michelangeli
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
Dna Sequence ◽  
Atlantic Forest ◽  
Phylogenetic Relationships ◽  
Sequence Data ◽  
Sensu Stricto ◽  
The Other ◽  
Dna Sequence Data ◽  
A New Species

Physeterostemon thomasii is described from the southern Bahian Atlantic forest of Brazil. It differs from the other two species of the genus by the paleaceous trichomes on young stems and petioles, and by the strongly bullate/foveolate leaves. A phylogenetic analysis with all three species, based on rbcL and ndhF DNA sequence data, showed that Physeterostemon forms a monophyletic group, sister to Eriocnema fulva, and this clade is placed in a polytomy at the base of the tribe Miconieae sensu stricto. However, there is no resolution within Physeterostemon, thus the phylogenetic relationships of the three species cannot be established.

CANADIAN OCHODAEUS, WITH A DESCRIPTION OF A NEW SPECIES (COLEOPTERA: SCARABAEIDAE)

1968 ◽  
Vol 100 (10) ◽  
pp. 1118-1120
Author(s):  
H. F. Howden
Keyword(s):  
British Columbia ◽  
New Species ◽  
The Other ◽  
Southern Alberta ◽  
A New Species

AbstractOchodaeus luscinus n. sp. is described from southern Alberta, British Columbia, and Utah. The new species is compared to closely related forms and to the other Canadian species.

scholarly journals New Psychropotid species (Echinodermata Holothuroidea Elasipodida) of the Western Pacific with phylogenetic analyses

2021 ◽  
Author(s):  
Chuan Yu ◽  
Chunsheng Wang ◽  
Dongsheng Zhang ◽  
Ruiyan Zhang
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
Deep Sea ◽  
Phylogenetic Analyses ◽  
The Other ◽  
Western Pacific ◽  
Morphological Examination ◽  
The Family ◽  
The Western Pacific ◽  
A New Species

Holothurians of the family Psychropotidae are widely distributed, but are the least studied deep-sea holothurians. On the expedition of the Western Pacific, four holothurians specimens of the family Psychropotidae were collected by the Jiaolong human operated vehicle (HOV). Through morphological examination, two of them were identified as a new species, Benthodytes jiaolongi sp. nov., which was characterized as having minute papillae, narrow brims, and terminal anus; the ossicles were either rods or absent. The remaining two specimens were identified as Psychropotes verrucicaudatus Xiao, Gong, Kou & Li, 2019, which was firstly recorded at Kyushu-Palau Ridge (KPR). The phylogenetic analysis confirmed the classification status of B. jiaolongi and P. verrucicaudatus, and indicated a paraphyletic relationship within the genus Benthodytes. The new species clustered with Benthodytes sanguinolenta and was separated from the clade of the other Benthodytes species. Furthermore, B. sanguinolenta and B. jiaolongi sp. nov. was found to be different from the other Benthodytes species based on their morphology. Therefore, a revision of the genus Benthodytes is needed to solve its phylogenetic relationship.

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