scholarly journals First record of Toxodontidae (Mammalia, Notoungulata) from the late Miocene–early Pliocene of the southern central Andes, NW Argentina

2017 ◽  
Vol 91 (3) ◽  
pp. 566-576 ◽  
Author(s):  
Ricardo A. Bonini ◽  
Gabriela I. Schmidt ◽  
Marcelo A. Reguero ◽  
Esperanza Cerdeño ◽  
Adriana M. Candela ◽  
...  
Keyword(s):  
New Species ◽  
Late Miocene ◽  
First Record ◽  
Phylogenetic Position ◽  
New Taxon ◽  
Mandibular Ramus ◽  
Early Pliocene ◽  
Southern Central ◽  
The Right ◽  
A New Species

AbstractA new species of toxodontid notoungulate, Xotodon maimarensis n. sp., is described from the Maimará Formation (late Miocene–early Pliocene), Jujuy Province, northwestern Argentina. This is the first record of a toxodontid from the Eastern Cordillera. The specimen is housed at the Museo de Geología, Mineralogía y Paleontología, Instituto de Geología y Minería de la Universidad Nacional de Jujuy. It consists of an incomplete mandible preserving the right mandibular ramus with part of the dental series, partially preserved symphysis with all the incisors, and a small portion of the left ramus without teeth. The following characters distinguish it as a new taxon: symphysis long and narrow with slight divergence of its lateral borders; strong procumbence of lower incisors and deeply implanted i3; chin angle lower than in X. major and X. cristatus and bulging labial keel limiting strong lateral concavities. Comparative analysis in the context of the recently revised Neogene Toxodontidae indicates that the Maimará specimen shares mandibular features and dental characters with Xotodon and Mixotoxodon, differing from the latter by the more upraised symphysis. The phylogenetic position of Xotodon maimarensis n. sp. supports the taxonomic interpretation of the studied specimen as a new species of Xotodon. This new Toxodontidae increases the knowledge of the diversity and radiation of this group of notoungulates in northwest Argentina.

Confirmation of a New Species of Small Dasyurid Marsupial by Electrophoretic Analysis of Enzymes and Proteins

1983 ◽  
Vol 31 (5) ◽  
pp. 743 ◽  
Author(s):  
DW Cooper ◽  
A Woolley
Keyword(s):  
New Species ◽  
Genetic Distance ◽  
Electrophoretic Mobility ◽  
Late Miocene ◽  
Electrophoretic Analysis ◽  
Early Pliocene ◽  
Antechinus Stuartii ◽  
A New Species ◽  
Nei's Genetic Distance

Eight species of dasyurid marsupials have been typed for the electrophoretic mobility of 18 of their enzymes and proteins. The species were the Ningbing antechinus (Pseudantechinus sp.), Pseudantechinus macdonnellensis (formerly Antechinus macdonnellensis), Parantechinus apicalis (formerly Antechinus apicalis), Parantechinus bilarni (formerly Antechinus bilarni), Antechinus stuartii, Dasykaluta rosamondae (formerly Antechinus rosamondae), Dasycercus cristicauda and Planigale maculata. The results show that the Ningbing antechinus is a probable new species. The data suggest that its nearest relative is Dasycercus cristicauda. Analysis of the results by calculation of a modified x2 and an approximation to Nei's genetic distance indicates that all species have been the product of one radiation, possibly in the late Miocene or early Pliocene. Two races of P. macdonnellensis probably exist, separable by their transferrin types.

scholarly journals <i>Globorotalia bouregregensis,</i> a new species of planktonic foraminifer from the latest Miocene–early Pliocene of the Rifian Seaway (northwest Morocco)

1997 ◽  
Vol 16 (2) ◽  
pp. 175-178
Author(s):  
Roberto Barbieri ◽  
Gian Gabriele Ori
Keyword(s):  
New Species ◽  
New Taxon ◽  
Planktonic Foraminifer ◽  
Early Pliocene ◽  
Well Differentiated ◽  
A New Species

Abstract. Globorotalia bouregregensis, n. sp., is described and documented from the latest Miocene-early Pliocene sequence of the Rifian Seaway, northwest Morocco. By its short stratigraphic distribution, persistence and distinctive morphologic features, the new taxon is well differentiated within the scituline assemblage.

scholarly journals New genus of subfamily Cypridopsinae Kaufmann, 1933 (Crustacea: Ostracoda) from Thailand

2018 ◽  
Author(s):  
Sukonthip Savatenalinton
Keyword(s):  
New Species ◽  
New Genus ◽  
First Record ◽  
New Taxon ◽  
Left Valve ◽  
Present Contribution ◽  
The Right ◽  
Terminal Claw ◽  
One New Species ◽  
Interior View

The new genus Thaicypridopsis gen. nov. described here belongs to the tribe Zonocypridini Higuti & Martens, 2012 in the subfamily Cypridopsinae Kaufmann, 1900. It is the first record of the Recent representatives within this tribe in Southeast Asia and Oriental regions. Thaicypridopsis gen. nov. has a number of remarkable characters that distinguish it from other genera in the subfamily: a submarginal row of distinctive tubercles on the postero-ventral part of the right valve in the interior view, a strong serrated claw G2 on the second antenna with an apical concavity, large bristles with hirsute endings and spatula-shaped apexes on all three maxillular endites and a bifurcate tip on the terminal claw of the second thoracopod. One new species, Thaicypridopsis longispinosa sp. nov., is described under this new genus in the present contribution. Apart from the above diagnostic characters, the new species also has long spines on the valve surface as its outstanding feature. The new taxon is morphologically compared with other related species and genera within and outside the subfamily Cypridopsinae. In addition, due to the new genus belonging to a group of genera with the left valve overlapping the right valve in the subfamily, a key to the genera within this group is given.

scholarly journals Gonolobus espejoi (Apocynaceae, Asclepiadoideae), A New Species from Veracruz, Mexico

2021 ◽  
Vol 46 (2) ◽  
pp. 422-426
Author(s):  
Gerald Matus Hernández-Barón ◽  
Lizetth Jimena Hernández-Barón ◽  
Ana Rosa López-Ferrari
Keyword(s):  
New Species ◽  
Similar Species ◽  
New Taxon ◽  
Distribution Map ◽  
The Right ◽  
A New Species

Abstract— Gonolobus espejoi, a new species from Veracruz, Mexico, is described and illustrated. The new taxon shares characteristics with G. albiflorus and G. spiranthus such as the presence of a stipitate gynostegium, but differs from these species by having campanulate corolla, corolla lobes with two lateral purple calluses with the right margin ciliate, oblong-spatulate anther appendages, and a cotyliform style apex. A comparative table and a distribution map of the new taxon and the morphologically similar species is provided.

The first record of Adelosgryllus Mesa & Zefa, 2004 (Orthoptera: Grylloidea: Phalangopsidae) from caves, with the description of a new species from Brazil

Zootaxa ◽  
2021 ◽  
Vol 4933 (1) ◽  
pp. 136-150
Author(s):  
RAYANNE LAYS SANT’ANA MERLO ◽  
RODRIGO ANTÔNIO CASTRO-SOUZA ◽  
VITOR GABRIEL PEREIRA JUNTA ◽  
RODRIGO LOPES FERREIRA
Keyword(s):  
New Species ◽  
Natural History ◽  
Intraspecific Variation ◽  
First Record ◽  
History Of ◽  
The Right ◽  
Two Populations ◽  
A New Species

The first species for the genus Adelosgryllus Mesa & Zefa, 2004 recorded in caves is herein described. We used the morphology of the phallic complex as the main criteria to differentiate this species from the congeneric ones. In addition, we discussed the natural history of the new species, some aspects of its association to the cave habitats, and the intraspecific variation of the right tegmen observed in two populations of this new species. 

Total evidence analysis of the phylogenetic relationships of bandicoots and bilbies (Marsupialia: Peramelemorphia): reassessment of two species and description of a new species

Zootaxa ◽  
2018 ◽  
Vol 4378 (2) ◽  
pp. 224 ◽  
Author(s):  
KENNY J. TRAVOUILLON ◽  
MATTHEW J. PHILLIPS
Keyword(s):  
New Species ◽  
Late Miocene ◽  
Phylogenetic Relationships ◽  
Taxonomic Status ◽  
Molecular Data ◽  
Total Evidence ◽  
Bayesian Analyses ◽  
Early Pliocene ◽  
Evidence Analysis ◽  
A New Species

The phylogenetic relationships of bandicoots and bilbies have been somewhat problematic, with conflicting results between morphological work and molecular data. This conflict makes it difficult to assess the taxonomic status of species and subspecies within this order, and also prevents accurate evolutionary assessments. Here, we present a new total evidence analysis, combining the latest cranio-dental morphological matrix containing both modern and fossil taxa, with molecular data from GenBank. Several subspecies were scored in the morphological dataset to match the molecular data available. Both parsimony and Bayesian analyses were performed, giving similar topologies except for the position of four fossil taxa. Total evidence dating places the peramelemorphian crown origin close to the Oligocene/Miocene boundary, and the radiations of most modern genera beginning in the Late Miocene or Early Pliocene. Our results show that some species and subspecies require taxonomic reassessment, and are revised here. We also describe a new, extinct species from the Nullarbor region. This suggests that the number of recently extinct peramelemorphian species is likely to further increase. 

scholarly journals Cephonodes sanshaensis sp. nov. (Lepidoptera, Sphingidae) from Xisha Islands, Hainan Province, China

2021 ◽  
Author(s):  
Min Deng ◽  
Min Wang ◽  
Chao Tang ◽  
Bo Cai ◽  
Guang-Chang Ma ◽  
...  
Keyword(s):  
New Species ◽  
Molecular Analysis ◽  
Male Genitalia ◽  
Phylogenetic Position ◽  
Hainan Province ◽  
Xisha Islands ◽  
Right Lobe ◽  
The Right ◽  
A New Species

A new species, Cephonodes sanshaensis Deng & Huang sp. nov. is described from Xisha Islands in Sansha City of China. The photos of the adults and their genitalia are provided. The new species is similar to C. hylas (Linnaeus, 1771) and C. picus (Cramer, 1777), but it can be distinguished easily by characters in the male genitalia: the right lobe of the uncus hook-shaped with distinctly acute apex, left valva long and narrow with truncate apex, right valva broad knife-shaped. Molecular analysis based on COI barcode sequences is used to infer the phylogenetic position of the new species within the genus Cephonodes. An updated key and checklist to the species of the genus Cephonodes are also provided.

scholarly journals New species of osmundaceous fertile leaves from the upper Triassic of Argentina

2018 ◽  
Vol 58 (2) ◽  
pp. 107-119 ◽  
Author(s):  
Eliana P. Coturel ◽  
Josefina Bodnar ◽  
Eduardo M. Morel ◽  
Daniel G. Ganuza ◽  
Ana J. Sagasti ◽  
...  
Keyword(s):  
New Species ◽  
First Record ◽  
Late Triassic ◽  
Apical Region ◽  
New Taxon ◽  
Potrerillos Formation ◽  
Formed Part ◽  
Entire Margin ◽  
Early Late ◽  
A New Species

AbstractA new species of Osmundopsis Harris is described based on several impression-compression fossils from the upper section of the Potrerillos Formation (Uspallata Group) at Cerro Cacheuta Hill, Mendoza Province, Argentina. Osmundopsis zunigai sp. nov. is characterized by having fertile pinnae with a slender striate rachis, bearing widely separate, opposite to subopposite short falcate pinnules with an entire margin, rounded apex, and a partially reduced lamina. The pinnules bear sporangia loosely disposed in clusters of four or five on the abaxial side. The sporangia are wedge- to heart-shaped, shortly stalked, with cells of the apical region thickened, and have a vertical dehiscence slit. The spores are trilete and laevigate. This is the first record of Osmundopsis in the Triassic of Argentina. The mutual occurrence or co-preservation of Osmundopsis zunigai sp. nov. with sterile fronds of Cladophlebis kurtzi suggests the possibility that these species formed part of a dimorphic bipinnate frond. The diversity and geographic extent of fertile leaves of the Osmunda lineage in the early Late Triassic, with records in South Africa and Antarctica and now with this new taxon, support the idea of a moist mesothermal climatic belt in southern Gondwana.

scholarly journals Hantzschia subandina Frenguelli (Bacillariophyceae): Morphology, status and typification, as well as the description of a new species of Nitzschia

2020 ◽  
Vol 55 (4) ◽  
Author(s):  
John P. Kociolek ◽  
Amelia A. Vouilloud
Keyword(s):  
Electron Microscopy ◽  
New Species ◽  
Taxonomic Status ◽  
Ventral Side ◽  
Phylogenetic Position ◽  
Original Material ◽  
New Taxon ◽  
A New Species ◽  
Scanning Electron ◽  
Apical Axis

Backgrounds and aims: Hantzschia Grunow is a genus characterized by having valves asymmetric to the apical axis, markedly dorsiventral, with an eccentric raphe on the ventral side supported by fibulae and ‘hantzschioid’ symmetry of the frustules. In 1942 J. Frenguelli published the flora of diatoms of Neuquén province (Argentina), work in which he erected Hantzschia subandina as a new species for science. This work investigates the identity and taxonomic status of this taxon.  M&M: Original material of Hantzschia subandina of the Frenguelli Collection was analysed with light and scanning electron microscopy. Results: Observations on the material suggested two different species were included in the concept of this species assigned originally to the genus Hantzschia. Furthermore, neither of the two species present are assignable to the genus Hantzschia. Nitzschia subandina (Frenguelli) comb. nov. has a large central nodule and a slight asymmetry about the apical axis; it also produces frustules with nitzschioid and hantzschioid symmetry. We designate a lectotype for this taxon. In addition, another diatom in the same material with slight asymmetry about the apical axis has distinctive ornamentation on the mantle of the valve and produces nitzschioid and hantzschioid frustules. For this taxon we tentatively assign it to the non-monophyletic genus Nitzschia, describing it as N. araucana sp. nov. We discuss the possible phylogenetic position of this new taxon, and suggest that the genus Nitzschia is “the next Navicula” ready to be further subdivided into distinct genera.

Aegla buenoi n. sp. (Decapoda: Anomura): first record of aeglid crab from Cinzas River basin, Brazil

Zootaxa ◽  
2021 ◽  
Vol 5005 (3) ◽  
pp. 291-303
Author(s):  
INGRID COSTA MARÇAL ◽  
FERNANDA POLLI PÁEZ ◽  
LENICE SOUZA-SHIBATTA ◽  
SILVIA HELENA SOFIA ◽  
GUSTAVO MONTEIRO TEIXEIRA
Keyword(s):  
New Species ◽  
River Basin ◽  
Related Species ◽  
First Record ◽  
Molecular Data ◽  
New Taxon ◽  
Diagnostic Features ◽  
Closely Related Species ◽  
Morphological And Molecular Data ◽  
A New Species

A new species of freshwater anomuran crab, Aegla buenoi n. sp., is described. The new taxon was collected from two streams within the Cinzas River basin, Paraná state, Brazil. We used morphological and molecular data (COI mtDNA) to distinguish the new species from its congeners. Aegla buenoi n. sp. is differentiated by morphological diagnostic features of the cephalothorax, chelipeds, second abdominal epimeron, and uropods. Molecular results confirm the separation of A. buenoi n. sp. from closely related species (A. castro Schmitt, 1942, A. lata Bond-Buckup & Buckup, 1994, and A. jacutinga Marçal & Teixeira, 2020). Hence, our study increases the known diversity of aeglids and reports the first species of Aegla from the Cinzas River basin.

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