scholarly journals A new species of the archaic primateZanycterisfrom the late Paleocene of western Colorado and the phylogenetic position of the family Picrodontidae

PeerJ ◽  
2013 ◽  
Vol 1 ◽  
pp. e191 ◽  
Author(s):  
Benjamin John Burger
Keyword(s):  
New Species ◽  
Phylogenetic Position ◽  
Late Paleocene ◽  
Western Colorado ◽  
The Family ◽  
A New Species

scholarly journals A new species of Caecilia (Gymnophiona, Caeciliidae) from the Magdalena valley region of Colombia

ZooKeys ◽  
2019 ◽  
Vol 884 ◽  
pp. 135-157 ◽  
Author(s):  
Andrés R. Acosta-Galvis ◽  
Mauricio Torres ◽  
Paola Pulido-Santacruz
Keyword(s):  
Mitochondrial Dna ◽  
New Species ◽  
Body Length ◽  
Dna Sequences ◽  
Phylogenetic Position ◽  
The Family ◽  
The Status ◽  
A New Species

A new species of the genus Caecilia (Caeciliidae) from the western foothills of the Serranía de los Yariguíes in Colombia is described. Caecilia pulchraserranasp. nov. is similar to C. degenerata and C. corpulenta but differs from these species in having fewer primary annular grooves and a shorter body length. With this new species, the currently recognized species in the genus are increased to 35. Mitochondrial DNA sequences, including newly sequenced terminals representing two additional, previously unanalyzed species, corroborate the phylogenetic position of the new species within Caecilia and the monophyly of the genus. This analysis also included newly sequenced terminals of Epicrionops aff. parkeri (Rhinatrematidae) and trans-Andean Microcaecilia nicefori (Siphonopidae). Evidence was found for the non-monophyly of the family Siphonopidae and the siphonopid genera Microcaecilia and Siphonops. The implications of these results for caecilian systematics are discussed and the status of the trans-Andean populations of Caecilia degenerata is commented upon.

It is marine: distinguishing a new species of Catatropis (Digenea: Notocotylidae) from its freshwater twin

Parasitology ◽  
2020 ◽  
pp. 1-10
Author(s):  
Anna Gonchar ◽  
Kirill V. Galaktionov
Keyword(s):  
New Species ◽  
Life Cycle ◽  
Molecular Data ◽  
Phylogenetic Position ◽  
True Nature ◽  
Northern European ◽  
Common Eiders ◽  
The Family ◽  
A New Species ◽  
European Seas

Abstract The morphology of sexual adults is the cornerstone of digenean systematics. In addition, life cycle data have always been significant. The integration of these approaches, supplemented with molecular data, has allowed us to detect a new species that many researchers may have previously seen, but not recognized. Sexual adults from common eiders that we found in northern European seas were extremely similar to other notocotylids, but the discovery of their intermediate host, a marine snail, revealed the true nature of this material. Here we describe sexual adults, rediae and cercariae of Catatropis onobae sp. nov. We discuss how ‘Catatropis verrucosa’ should be regarded, justify designation of the new species C. onobae for our material and explain why it can be considered a cryptic species. The phylogenetic position of C. onobae within Notocotylidae, along with other evidence, highlights the challenges for the taxonomy of the family, for which two major genera appear to be polyphyletic and life cycle data likely undervalued.

scholarly journals The earliest mammal of the European Paleocene: The multituberculateHainina

2000 ◽  
Vol 74 (4) ◽  
pp. 701-711 ◽  
Author(s):  
P. Peláez-Campomanes ◽  
N. López-Martínez ◽  
M.A. Álvarez-Sierra ◽  
R. Daams
Keyword(s):  
New Species ◽  
Early Cretaceous ◽  
Late Cretaceous ◽  
Mass Extinction ◽  
Late Paleocene ◽  
The Family ◽  
Extinction Event ◽  
Masticatory System ◽  
Mass Extinction Event ◽  
A New Species

A new species of multituberculate mammal,Hainina pyrenaican. sp. is described from Fontllonga-3 (Tremp Basin, Southern Pyrenees, Spain), correlated to the later part of chron C29r just above the K/T boundary. This taxon represents the earliest European Tertiary mammal recovered so far, and is related to otherHaininaspecies from the European Paleocene. A revision of the species ofHaininaallows recognition of a new species,H. vianeyaen. sp. from the Late Paleocene of Cernay (France). The genus is included in the family Kogaionidae Rãdulescu and Samson, 1996 from the Late Cretaceous of Romania on the basis of unique dental characters. The Kogaionidae had a peculiar masticatory system with a large, blade-like lower p4, similar to that of advanced Ptilodontoidea, but occluding against two small upper premolars, interpreted as P4 and P5, instead of a large upper P4. The endemic European Kogaionidae derive from an Early Cretaceous group with five premolars, and evolved during the Late Cretaceous and Paleocene. The genusHaininarepresents a European multituberculate family that survived the K/T boundary mass extinction event.

Unexpected rDNA divergence between two morphologically minimalistic nematodes with description of a new species (Tylenchomorpha: Tylenchidae)

Nematology ◽  
2019 ◽  
Vol 21 (1) ◽  
pp. 57-70 ◽  
Author(s):  
Kaikai Qiao ◽  
Mengxin Bai ◽  
Qiu Wang ◽  
Xiangyu Hou ◽  
Jingwei Chen ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Genetic Diversity ◽  
New Species ◽  
Phylogenetic Position ◽  
Long Branch Attraction ◽  
Large Numbers ◽  
The Family ◽  
A New Species ◽  
Scanning Electron ◽  
Phenotypic Convergence

Summary Species of the family Tylenchidae are encountered in large numbers in soils. The genus Labrys was recently described characterised by a remarkable lip pattern that differs from all other known Tylenchidae genera. Here we describe a curious new species, Labrys fujianensis sp. n., that morphologically fits the genus Labrys but which is genetically divergent. The phylogeny was inferred based on 18S and 28S rDNA and light and scanning electron microscopy were used to extract detailed morphologies. The phylogenetic position of this species and its phenotypic convergence are discussed. The possibility of a long-branch attraction artefact was inspected both by removal of variable nucleotide sites and monophyletic testing of topologies. The results confirmed the divergent positioning of the presented species and it is demonstrated that the genetic diversity in Tylenchidae may be much higher than expected due to morphological homoplasy.

scholarly journals Description of a new species of Paraplehnia (Polycladida, Stylochoidea) from Japan, with inference on the phylogenetic position of Plehniidae

ZooKeys ◽  
2019 ◽  
Vol 864 ◽  
pp. 1-13 ◽  
Author(s):  
Yuki Oya ◽  
Taeko Kimura ◽  
Hiroshi Kajihara
Keyword(s):  
New Species ◽  
Phylogenetic Analyses ◽  
Dna Barcode ◽  
Phylogenetic Position ◽  
Future Studies ◽  
Rdna Sequences ◽  
The Family ◽  
28S Rdna Sequences ◽  
Unidentified Species ◽  
A New Species

We describe a new species of polyclad flatworm, Paraplehniaseisuiaesp. nov., from 298–310 m depths in the Sea of Kumano, West Pacific, Japan. Paraplehniaseisuiaesp. nov. is characterized by i) a developed muscular wall proximally occupying about one-third of the prostatic vesicle, ii) no common duct between the spermiducal bulbs and the prostatic vesicle, and iii) a genital pit between the male and female gonopores. We provide a partial sequence (712 bp) of the mitochondrial cytochrome c oxidase subunit I gene as a DNA barcode for the species. Our phylogenetic analyses based on 603-bp 28S rDNA sequences indicate that P.seisuiaesp. nov. is nested in a clade consisting of stylochoid species along with unidentified species of Stylochus. It suggests that Plehniidae belongs to Stylochoidea, although this should be confirmed by future studies that contain Plehniaarctica (Plehn, 1896), the type species of the type genus of the family. The interfamily relationship among the superfamily Stylochoidea remains poorly resolved.

A new species of lambdarina (rhynchonellida, brachiopoda) from the viséan of central sudetes (Poland) and its phylogenetic position

2014 ◽  
Vol 64 (1) ◽  
pp. 1-12 ◽  
Author(s):  
Jolanta Muszer
Keyword(s):  
New Species ◽  
Full Range ◽  
Morphological Features ◽  
Phylogenetic Position ◽  
Growth Stages ◽  
Tropical Waters ◽  
Marginal Seas ◽  
Sw Poland ◽  
A New Species

Abstract A new species of micromorphic articulate brachiopod (Rhynchonellida) Lambdarina jugowiensis sp. nov., from the upper Visean (Sokolec Beds) of central Sudetes, SW Poland, is described. The studied specimens are calcified, what makes them unique in respect of their state of preservation. The material is represented by a full range of growth stages; from brephic to gerontic. Based on its morphological features and the palaeogeographical distribution of all its known species, two main evolutionary lines are proposed for the genus; the Australian and the European ones. Lambdarina was widely distributed in the equatorial-tropical waters of marginal seas of the Palaeotethys Ocean, mostly during Mississippian time.

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