A NEW SPECIES OF ABERTELLA (ECHINOIDEA: SCUTELLINA) FROM THE GRAN BAJO DEL GUALICHO FORMATION (LATE EARLY MIOCENE–EARLY MIDDLE MIOCENE), RÍO NEGRO PROVINCE, ARGENTINA

2005 ◽  
Vol 79 (6) ◽  
pp. 1229-1233
Author(s):  
SERGIO MARTINEZ ◽  
VALERIA REICHLER ◽  
RICH MOOI
Keyword(s):  
New Species ◽  
Middle Miocene ◽  
Early Miocene ◽  
Rio Negro ◽  
A New Species

Miocene rhinoceroses from the Texas Gulf Coastal Plain

1987 ◽  
Vol 61 (2) ◽  
pp. 388-423 ◽  
Author(s):  
Donald R. Prothero ◽  
Earl M. Manning
Keyword(s):  
New Species ◽  
North America ◽  
Coastal Plain ◽  
Middle Miocene ◽  
Early Miocene ◽  
High Plains ◽  
Gulf Coastal Plain ◽  
Local Fauna ◽  
Southeast Texas ◽  
A New Species

Four species of rhinoceros occur together in the Barstovian (middle Miocene) faunas of southeast Texas, a unique situation in the Miocene of North America. Two are assigned to normal contemporary High Plains species of Aphelops and Teleoceras, and two to dwarf species of Peraceras and Teleoceras. The dwarf Peraceras is a new species, P. hessei. The dwarf Teleoceras is assigned to Leidy's (1865) species “Rhinoceros” meridianus, previously referred to Aphelops. “Aphelops” profectus is here reassigned to Peraceras.The late Arikareean (early Miocene) Derrick Farm rhino, erroneously referred to “Caenopus premitis” by Wood and Wood (1937), is here referred to Menoceras arikarense. Menoceras barbouri is reported from the early Hemingfordian (early Miocene) Garvin Gully local fauna of southeast Texas. The rhinos from the early Clarendonian Lapara Creek Fauna are tentatively referred to Teleoceras cf. major.The three common genera of middle late Miocene rhinoceroses of North America (Aphelops, Peraceras, Teleoceras) are rediagnosed. Aphelops and Peraceras are more closely related to the Eurasian Aceratherium and Chilotherium (all four together forming the Aceratheriinae) than they are to the American Teleoceras. Contrary to Heissig (1973), Teleoceras is more closely related to the living rhinoceroses and their kin (together forming the Rhinocerotini) than it is to the Aceratheriinae.

scholarly journals A new species of Plesiosorex (Mammalia, Eulipotyphla) from the Early Miocene of Japan: first record of the genus from East Asia

2017 ◽  
Vol 73 (3-4) ◽  
pp. 292-299
Author(s):  
Mitsuharu Oshima ◽  
Yukimitsu Tomida ◽  
Takamichi Orihara
Keyword(s):  
New Species ◽  
North America ◽  
East Asia ◽  
Middle Miocene ◽  
Cladistic Analysis ◽  
First Record ◽  
Early Miocene ◽  
Central Japan ◽  
European Species ◽  
A New Species

Abstract A nearly complete dentary with preserved i2, p3 and m1 of a relatively large soricomorph from the Dota locality, Kani Basin, Early Miocene (ca. 18.5 Ma), Nakamura Formation of the Mizunami Group in central Japan, is described as a new species of Plesiosorex. It represents the first record of the genus in East Asia. Plesiosorex fejfari sp. nov. has a slender dentary, posteriorly elongated angular and condyloid processes, p3 with two roots, and m1 without hypoconulid or cingulid. Cladistic analysis of Butselia gracilis and seven species of Plesiosorex shows that Butselia is basally positioned with respect to Plesiosorex, and it seems likely that Plesiosorex originated in Europe at the beginning of the Miocene and expanded its distribution to East Asia and North America during the Early Miocene. Two Middle Miocene North American species are more closely related to each other than to European species of the same age.

scholarly journals A new species of leaffish Polycentrus Müller & Troschel, 1849 (Percomorpha: Polycentridae) from the rio Negro, Brazil

2014 ◽  
Vol 12 (4) ◽  
pp. 747-753 ◽  
Author(s):  
Daniel Pires Coutinho ◽  
Wolmar Benjamin Wosiacki
Keyword(s):  
New Species ◽  
Posterior Margin ◽  
Lower Edge ◽  
Posterior Edge ◽  
Pectoral Fin ◽  
Dorsal Fin ◽  
Rio Negro ◽  
Ventral Edge ◽  
A New Species

A new species of Polycentrusis described from the rio Negro, in Brazil. It is distinguished from P. schomburgkii by the presence of two dark postocular and one subocular band, all smaller than orbital diameter, blunt snout, isognathous mouth, reduction of the serrations on the lower edge of the lacrimal-spines ranging from zero to two tiny spines at the posterior end, intensely serrated edge of the interopercle, fully serrated posterior edge of the vertical arm of the preopercle, presence of five pungent opercular spines, subopercle broadly serrated along most of its posterior ventral edge, presence of serrations dorsally on the posterior margin of the cleithrum, fourth ray of pectoral fin reaching the vertical through the anal-fin origin, 19-21 predorsal scales, 19-20 scales on dorsal-fin base, 12-14 scales on anal-fin base, and absence of a median opercular blotch.

scholarly journals New species of Cyphocharax (Characiformes: Curimatidae) from the upper rio Negro, Amazon basin

2014 ◽  
Vol 12 (2) ◽  
pp. 327-332 ◽  
Author(s):  
Bruno F. Melo ◽  
Richard P. Vari
Keyword(s):  
New Species ◽  
Amazon Basin ◽  
Caudal Peduncle ◽  
Caudal Fin ◽  
Rio Negro ◽  
Fin Rays ◽  
Dark Pigmentation ◽  
Northern Brazil ◽  
Adipose Fin ◽  
A New Species

A new species of Cyphocharax, Curimatidae, apparently endemic to the blackwater upper rio Negro of the Amazon basin in northern Brazil, is described.The new species is readily distinguished from its congeners by the presence of a distinctly longitudinally elongate, posteriorly vertically expanding patch of dark pigmentation along the midlateral surface of the caudal peduncle, with the patch extending from the base of the middle caudal-fin rays anteriorly past the vertical through the posterior terminus of the adipose fin. The new species additionally differs from all congeners in details of body and fin pigmentation and meristic and morphometric ratios. Evidence for the assignment of the species to Cyphocharax and the occurrence of other species of the Curimatidae apparently endemic to the upper rio Negro catchment is discussed.

A new species of Anchitherium (Equidae: Anchitheriinae) from the Middle Miocene of Abocador de Can Mata (Vallès-Penedès Basin, NE Iberian Peninsula)

2011 ◽  
Vol 10 (7) ◽  
pp. 567-576 ◽  
Author(s):  
Cheyenn Rotgers ◽  
David M. Alba ◽  
Josep M. Robles ◽  
Isaac Casanovas-Vilar ◽  
Jordi Galindo ◽  
...  
Keyword(s):  
New Species ◽  
Iberian Peninsula ◽  
Middle Miocene ◽  
Ne Iberian Peninsula ◽  
A New Species

scholarly journals A taxonomic review of the species of CharaxScopoli, 1777 (Teleostei: Characidae: Characinae) with description of a new species from the rio Negro bearing superficial neuromasts on body scales, Amazon basin, Brazil

2014 ◽  
Vol 12 (2) ◽  
pp. 193-228 ◽  
Author(s):  
Naércio A. Menezes ◽  
Carlos Alberto S. de Lucena
Keyword(s):  
New Species ◽  
Geographic Distribution ◽  
Amazon Basin ◽  
Junior Synonym ◽  
Museum Collections ◽  
Taxonomic Review ◽  
Rio Negro ◽  
Three New Species ◽  
A New Species ◽  
Pelvic Fin

The species of Charaxwere reviewed by Lucena (1987) who a little later (1989) added three new species to the genus. Examination of recently collected specimens from museum collections documented the more extensive geographic distribution for most species and revealed the existence of a new species in which superficial neuromasts were discovered and are herein described. These skin structures were also detected in C. metae Eigenmann, 1922. Anal- and pelvic-fin hooks previously observed only on the anal-fin of one species of the genus are described herein in some other species. Charax unimaculatus Lucena is considered a junior synonym of C. michaeli Lucena. All the species are redescribed and the new species described.

scholarly journals A new species of Bosminopsis (Crustacea, Cladocera) from the Rio Negro ()

1976 ◽  
Vol 6 (1) ◽  
pp. 109-114 ◽  
Author(s):  
Gerd-Oltmann Brandorff
Keyword(s):  
New Species ◽  
Rio Negro ◽  
A New Species

Abstract It is described a new species Bosminopsis negrensis from the lower Rio Negro.

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