Biostratigraphic reappraisal of the Lower Triassic Sanga do Cabral Supersequence from South America, with a description of new material attributable to the parareptile genus Procolophon

2017 ◽  
Vol 79 ◽  
pp. 281-296 ◽  
Author(s):  
Sérgio Dias-da-Silva ◽  
Felipe L. Pinheiro ◽  
Átila Augusto Stock Da-Rosa ◽  
Agustín G. Martinelli ◽  
Cesar L. Schultz ◽  
...  
Keyword(s):  
South America ◽  
Lower Triassic ◽  
New Material

New material of Procolophon (Parareptilia: Procolophonoidea) from the Lower Triassic of Brazil, with remarks on the ages of the Sanga do Cabral and Buena Vista formations of South America

2006 ◽  
Vol 43 (11) ◽  
pp. 1685-1693 ◽  
Author(s):  
Sérgio Dias-da-Silva ◽  
Sean Patrick Modesto ◽  
Cesar Leandro Schultz
Keyword(s):  
South America ◽  
Lower Triassic ◽  
Dental Morphology ◽  
Early Triassic ◽  
Compelling Evidence ◽  
Buena Vista ◽  
New Material ◽  
Paraná Basin ◽  
Available Information ◽  
Parana Basin

We describe a large, fragmentary procolophonid skull and three large vertebrae from the Sanga do Cabral Formation, Paraná Basin, Lower Triassic of Brazil. Cranial and dental morphology allow us to refer the skull to the genus Procolophon; the fragmentary nature of the specimen, however, does not permit identification to species. The vertebrae are tentatively assigned to Procolophon. They are of a size expected for an individual represented by the skull, although the cranial and postcranial elements were not directly associated. The vertebrae are unusual for a procolophonid in exhibiting neural arches that are twice as broad as they are long, a dimension seen elsewhere among parareptiles only in pareiasaurs. A comparison of the manner of tetrapod preservation between the Sanga do Cabral and Katberg formations reveals that tetrapods in the former occur within conglomerates, whereas in the latter they are recovered mainly from mudstones. This taphonomic disparity may account for the absence in South America of the nearly cosmopolitan synapsid Lystrosaurus. The recent recognition of Permian tetrapods from the Buena Vista Formation of Uruguay, regarded widely to be a lateral equivalent of the Sanga do Cabral Formation, is assessed. We conclude that there is no compelling evidence of Permian tetrapods from the Buena Vista Formation and that the available information is suggestive of an Early Triassic age for that formation.

scholarly journals On the fossil Remains of Panochthus Burmeister, 1866 (Xenarthra, Cingulata, Glyptodontidae) from the Pleistocene of southern Brazil

2015 ◽  
Vol 87 (1) ◽  
pp. 15-27 ◽  
Author(s):  
José D. Ferreira ◽  
Martín Zamorano ◽  
Ana Maria Ribeiro
Keyword(s):  
South America ◽  
Rio Grande ◽  
Species Level ◽  
External Morphology ◽  
Latitudinal Distribution ◽  
Southern Brazil ◽  
Rio Grande Do Sul ◽  
Diagnostic Features ◽  
New Material

The genus Panochthus represents the last lineage of "Panochthini" recorded in the Pleistocene. This genus has a wide latitudinal distribution in South America, and in Brazil it occurs in the southern and northeastern regions. In this paper we describe new material (isolated osteoderms and caudal tube fragments) assigned to Panochthus from the state of Rio Grande do Sul (southern Brazil) and discuss some taxonomic issues related to Panochthus tuberculatus and Panochthus greslebini based on this material . The occurrence of P. greslebini is the first for outside the Brazilian Intertropical Region. In addition, we describe new diagnostic features to differentiate the osteoderms of P. greslebini and P. tuberculatus. Unfortunately, it was not possible to identify some osteoderms at the species level. Interestingly, they showed four distinct morphotypes characterized by their external morphology, and thus were attributed to Panochthus sp. Lastly, we conclude that in addition to P.tuberculatus registered to southern Brazil, there is another species of the genus, assignable to P. cf. P. greslebini. Our analysis reinforce the reliability of caudal tube characters for the classification of species of Panochthus.

scholarly journals Polychaeta Orbiniidae from Antarctica, the Southern Ocean, the Abyssal Pacific Ocean, and off South America

Zootaxa ◽  
2017 ◽  
Vol 4218 (1) ◽  
pp. 1 ◽  
Author(s):  
JAMES A. BLAKE
Keyword(s):  
Pacific Ocean ◽  
South America ◽  
Southern Ocean ◽  
The United States ◽  
Morphological Characters ◽  
International Programs ◽  
Type Specimens ◽  
The Pacific ◽  
New Material ◽  
Revised Definitions

The orbiniid polychaetes chiefly from Antarctic and subantarctic seas and off South America are described based on collections of the National Museum of Natural History and new material from surveys conducted by the United States Antarctic Program and other federal and privately funded sources as well as participation in international programs. A total of 44 species of Orbiniidae distributed in 10 genera are reported from the Pacific Ocean and waters off South America and Antarctica. Twenty-one species are new to science; one species is renamed. Berkeleyia heroae n. sp., B. abyssala n. sp., B. weddellia n. sp.; B. hadala n. sp., Leitoscoloplos simplex n. sp., L. plataensis n. sp., L. nasus n. sp., L. eltaninae n. sp., L. phyllobranchus n. sp., L. rankini n. sp., Scoloplos bathytatus n. sp., S. suroestense n. sp., Leodamas hyphalos n. sp., L. maciolekae n. sp., L. perissobranchiatus n. sp., Califia bilamellata n. sp., Orbinia orensanzi n. sp., Naineris antarctica n. sp., N. argentiniensis n. sp., Orbiniella spinosa n. sp., and O. landrumae n. sp. are new to science. A new name, Naineris furcillata, replaces N. chilensis Carrasco, 1977, a junior homonym of N. dendtritica chilensis Hartmann‑Schröder, 1965, which is raised to full species status. Leodamas cochleatus (Ehlers, 1900) is removed from synonymy and redescribed. A neotype is established for Leodamas verax Kinberg, 1966, the type species. A general overview of Leodamas species is provided. The Leitoscoloplos kerguelensis (McIntosh, 1885) complex is reviewed and partially revised. Definitions of the genera of the Orbiniidae are updated to conform to recently described taxa. Several new synonymies are proposed following a reexamination of previously described type specimens. The morphological characters used to identify and classify orbiniids are reviewed. The biogeographic and bathymetric distributions of the South American and Southern Ocean orbiniid fauna are reviewed. 

Three new species of Neotropical Tropisternus Solier (Coleoptera: Hydrophilidae)

Zootaxa ◽  
2008 ◽  
Vol 1917 (1) ◽  
pp. 65-68 ◽  
Author(s):  
PAUL J. SPANGLER ◽  
ANDREW EDWARD Z. SHORT
Keyword(s):  
New Species ◽  
South America ◽  
New World ◽  
Senior Author ◽  
Extreme Caution ◽  
Northern Canada ◽  
Aquatic Beetles ◽  
Difficult Genus ◽  
New Material ◽  
Three New Species

The water scavenger beetle genus Tropisternus Solier, 1834, is one of the most common and recognizable taxa of aquatic beetles in the New World. As presently defined, the genus contains 60 species (Hansen 1999, Short & Hebauer 2006) and ranges from northern Canada to the southern tip of South America. The senior author (PJS) conducted a full revision of this taxonomically difficult genus for his PhD dissertation nearly fifty years ago (Spangler 1960). For the next several decades, PJS continued to update, revise, correct, and incorporate new material into this massive work. This paper makes available three new names of Tropisternus in preparation for the eventual publication of this authoritative treatment of the genus. It should be noted for those using the keys given in Spangler (1960) that the interpretation of some of the names proved incorrect following the examination of types; the key should be used with extreme caution particularly for Neotropical taxa.

FIRST BASAL SYNAPSIDS (“PELYCOSAURS”) FROM THE UPPER PERMIAN-?LOWER TRIASSIC OF URUGUAY, SOUTH AMERICA

2003 ◽  
Vol 77 (2) ◽  
pp. 389-392 ◽  
Author(s):  
GRACIELA PIÑEIRO ◽  
MARIANO VERDE ◽  
MARTÍN UBILLA ◽  
JORGE FERIGOLO
Keyword(s):  
South America ◽  
Lower Triassic ◽  
Upper Permian

New material of Psychrolutes sio (Scorpaeniformes, Psychrolutidae) from the eastern Pacific of South America and comments on the taxonomy of Psychrolutes inermis and Psychrolutes macrocephalus from the eastern Atlantic of Africa

1985 ◽  
Vol 63 (2) ◽  
pp. 444-451 ◽  
Author(s):  
Joseph S. Nelson ◽  
Norma Chirichigno ◽  
Fernando Balbontsín
Keyword(s):  
South Africa ◽  
South America ◽  
Common Species ◽  
Eastern Pacific ◽  
Separate Species ◽  
New Material

Psychrolutes sio Nelson, previously known only from the holotype and one small paratype, is redefined from six new specimens. The species is now known to range from northernmost Peru to near Valparaíso, Chile, and to occur at depths of 700–1200 m. Psychrolutes macrocephalus (Gilchrist) is recognized as a separate species from Psychrolutes inermis (Vaillant) and as the more common species in South Africa.

First basal synapsids (“pelycosaurs”) from the Upper Permian-?Lower Triassic of Uruguay, South America

2003 ◽  
Vol 77 (2) ◽  
pp. 389-392 ◽  
Author(s):  
Graciela Piñeiro ◽  
Mariano Verde ◽  
Martín Ubilla ◽  
Jorge Ferigolo
Keyword(s):  
South Africa ◽  
North America ◽  
South America ◽  
Lower Triassic ◽  
Late Carboniferous ◽  
Upper Permian ◽  
Lower Permian ◽  
Late Permian ◽  
Early Permian ◽  
Continental Deposits

In their monograph Review of the Pelycosauria, Romer and Price (1940), proposed that the earliest synapsids (“pelycosaurs”) were cosmopolitan, despite the observation that amniotes appeared to be restricted to the paleotropics during the Late Carboniferous and Early Permian (290–282 Ma). Romer and Price (1940) accounted for the scarcity of terrestrial tetrapods, including “pelycosaurs,” in Lower Permian beds elsewhere to the absence of coeval continental deposits beyond North America and Europe. Indeed, most workers recognized a geographical and temporal gap between Permo-Carboniferous “pelycosaurs” and therapsid synapsids. Recent research has confirmed that varanopid and caseid “pelycosaurs” were components of therapsid-dominated Late Permian faunas preserved in Russia and South-Africa (Tatarinov and Eremina, 1975; Reisz, 1986; Reisz et al., 1998; Reisz and Berman, 2001).

scholarly journals Taxonomic status and ecology of Oriental Pheretima darnleiensis (Fletcher, 1886) and other earthworms (Oligochaeta : Megascolecidae) from Mt Kinabalu, Borneo

Zootaxa ◽  
2007 ◽  
Vol 1613 (1) ◽  
pp. 23-44 ◽  
Author(s):  
ROBERT J. BLAKEMORE ◽  
CSABA CSUZDI ◽  
MASAMICHI T. ITO ◽  
NOBUHIRO KANEKO ◽  
TATSUYA KAWAGUCHI ◽  
...  
Keyword(s):  
South Africa ◽  
Body Size ◽  
South America ◽  
Size Range ◽  
Taxonomic Status ◽  
Taxonomic Revision ◽  
Species Level ◽  
High Plasticity ◽  
New Material ◽  
Ecological Associations

The synonymy of Perichaeta darnleiensis Fletcher, 1886, first described from Australian Darnley Island in the Torres Straits, was confused since Beddard (1900) and Michaelsen (1900) wrongly applied the names Perichaeta cingulata Schmarda, 1861 (= Megascolex cingulatus) and Megascolex indicus Horst, 1883 [= Amynthas corticis (Kinberg, 1828)], respectively. Taxonomic revision of this species now merges several parthenogenetic morphs, including Pheretima decipiens Beddard, 1912 syn. nov. from Luzon, Philippines. Final resolution depends on location of missing types or, alternatively, on neotypification, nevertheless new material from Mt. Kinabalu, north Sabah (Borneo) allows augmentation of the description of Pheretima darnleiensis from that given by Sims & Easton (1972) who, for its lobate/serrate intestinal caeca, remarked that these “cannot be regarded as taxonomic characters as they are more fully formed in the larger specimens”. Body size range is now 45–700 mm, although this suggests either high plasticity or too wide synonymy. Its distribution in the tropical Indo-Australasian Archipelago and islands of Malaysia, Indonesia and Fiji is attributed to human-mediated introductions in recent and pre-historic times that mask its true provenance; reports from Hawaii, Sri Lanka, South Africa and South America are disputed. Sympatric Amynthas omeimontis kinabalu Sims & Easton, 1972 was elevated to species level by Blakemore (2005). Descriptions of Pheretima (Parapheretima) saba Sims & Easton, 1972 and Polypheretima everetti (Beddard & Fedarb, 1895: 69) – somewhat similar to Polypheretima kinabaluensis (Beddard & Fedarb, 1895: 71) – are augmented and specimens are figured on newly collected material. A new Mt Kinabalu earthworm, Metaphire paka Blakemore sp. nov. is proposed that compares with Metaphire cai (Michaelsen, 1916) from Java [originally “Pheretima inflata (Horst) var. cai”], bringing the total known earthworms from Mt Kinabalu to six species. Ecological associations are briefly discussed.

A new temnospondyl amphibian from the Lower Triassic of South America

2000 ◽  
Vol 24 (2) ◽  
pp. 119-123 ◽  
Author(s):  
C.A. Marsicano ◽  
D. Perea ◽  
M. Ubilla
Keyword(s):  
South America ◽  
Lower Triassic
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