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| Registros recuperados: 2.235 | |
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| De Iuliis,Gerardo. |
| Remains of a medium-sized megathere from Pleistocene deposits near Ulloma, Bolivia, suggest that the commonly accepted synonymy of Megatherium sundti Philippi, 1893 with Megatherium medinae Philippi, 1893 (Mammalia: Xenarthra: Megatheriidae) is unjustified. The strongest evidence supporting the distinction of these species is provided by their femora. In M. medinae the femur is plesiomorphic, bearing nearly parallel lateral and medial margins and an unreduced patellar trochlea. In M. sundti the femur bears strongly concave lateral and medial margins and a somewhat reduced patellar trochlea, resembling the derived condition in Megatherium americanum Cuvier, 1796. Less marked morphological differences in the skull, mandible, and tibia are apparently... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mammalia; Megatheriidae; Megatherium sundti; Megatherium medinae; Taxonomy; Pleistocene; Bolivia. |
| Ano: 2006 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0002-70142006000100013 |
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| Byung-Su,Lee; Yong,Il Lee; Miller,James F.; Jeong,Heon. |
| A diverse conodont fauna from the Machari Formation in the Yeongweol area of Gangweon (formerly Kangweon) Province, Korea, includes protoconodonts, paraconodonts, and euconodonts. Protoconodonts (assigned to Phylum Chaetognatha Leuckart and to Order Protoconodontida Landing) include Gapparodus Abaimova, Gumella Müller and Hinz, Hertzina Müller, and Phakelodus Miller. Paraconodonts (assigned to Phylum Chordata Bateson, to Superclass Conodonta Pander, and to Class Paraconodontida Müller) include species of Furnishina Müller, Muellerodus Miller, Proacodus Müller, Proacontiodus An, Prooneotodus Müller and Nogami, Prosagittodontus Müller and Nogami, and Westergaardodina Müller. Euconodonts (assigned to Phylum Chordata, to Superclass Conodonta Pander, and to... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Conodonts; Taxonomy; Biostratigraphy; Middle Cambrian; Upper Cambrian; Machari Formation; Korea. |
| Ano: 2009 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0002-70142009000200015 |
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| MONTEIRO,JOSIANE S.; SARMENTO,PRISCILA S.M.; SOTÃO,HELEN M.P.. |
| Abstract: Fungi play an important role in litter decomposition in forest ecosystems and are considered an undersampled group in the Amazon biome. This study aims to describe the composition, richness and frequency of species of conidial fungi associated with palm trees in an area of the Amapá National Forest, State of Amapá, Brazil. Palm leaf litter was collected from July 2009 to June 2010, incubated in moist chambers and examined for the presence of fungi. One hundred and seven species of conidial fungi were identified, in 79 genera and 25 families. As for the relative frequency of the species, the majority (94.4%) was sporadic and occurred on leaflets. We report new records for South America (Chaetopsis intermedia, Chaetochalara laevis and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Asexual Ascomycota; Arecaceae; Biodiversity; Flona Amapá; Taxonomy. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000500602 |
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| SCHNEIDER,HORACIO. |
| Four DNA datasets were combined in tandem (6700 bp) and Maximum parsimony and Neighbor-Joining analyses were performed. The results suggest three groups emerging almost at the same time: Atelidae, Pitheciidae and Cebidae. The total analysis strongly supports the monophyly of the Cebidae family, grouping Aotus, Cebus and Saimiri with the small callitrichines. In the callitrichines, the data link Cebuela to Callithrix, place Callimico as a sister group of Callithrix/Cebuella, and show Saguinus to be the earliest offshoot of the callitrichines. In the family Pithecidae, Callicebus is the basal genus. Finally, combined molecular data showed congruent branching in the atelid clade, setting up Alouatta as the basal lineage and Brachyteles-Lagothrix as a sister... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: New World monkeys; Platyrrhine; Taxonomy; Molecular; Evolution. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652000000200005 |
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| KELECOM,ALPHONSE; REIS,GEISA L.; FEVEREIRO,PAULO C.A.; SILVA,JANIE G.; SANTOS,MARCELO G.; MELLO NETO,CÍCERO B.; GONZALEZ,MARCELO S.; GOUVEA,RITA C.S.; ALMEIDA,GILBERTO S.S.. |
| The fluminense vegetation, more specifically the flora from the Jurubatiba restinga has been investigated by a multidisciplinary team of botanists, chemist, radiobiologist, insect physiologists and geneticist. Vouchers of 564 specimens have been collected, identified, organized in an herbarium, and a database is being build up containing, in addition to classical botanical data, chemical data and information on the potential economic use either for landscape gardening, alternative foods or as medicinal plants. Phytochemical studies of the Guttiferae, Clusia hilariana, yielded oleanolic acid and nemorosone. Their biological activities against the haematophagous insect Rhodnius prolixus vector of Chagas disease have been investigated. Finally, it has been... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Taxonomy; Economic use; Oleanolic acid; Nemorosone; Polonium-210; Biological activities. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652002000100013 |
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| BERGUE,CRISTIANINI T.; MARANHÃO,MARIA DA SAUDADE A.S.; FAUTH,GERSON. |
| Non-marine Oligocene ostracods from Tremembé Formation (Taubaté Basin, Southeast Brazil) are studied for the first time. The study reveals rich assemblages which are probably composed of many new taxa, two of which are described here. The sixteen ostracod species registered are classified in the generaCypretta Vávra, Strandesia Stuhlmann,Potamocypris Brady, Heterocypris Claus,Eucypris Vávra, Herpetocypris Brady and Norman, Cytheridella Daday and LimnocythereBrady. Two new species of the latter are herein proposed: L. mandubi sp. nov. and L. katu sp. nov. The succession of ostracod assemblages along the studied core changes conspicuously in composition, abundance and preservation, and are characterized by the following associations:... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ostracods; Paleolimnology; Taxonomy; Tremembé Formation. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000401531 |
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| DUARTE-ALMEIDA,JOAQUIM M.; CLEMENTE,MILENE S.; ARRUDA,ROSANI C.O.; VAZ,ANGELA M.S.F.; SALATINO,ANTONIO. |
| Large elongated glands occur on Cercideae leaf surfaces. Leaves of Bauhinia (55 taxa, 53 species), Cercis (1 species), Phanera (1 species), Piliostigma (2 species), Schnella (19 species) and Tylosema (1 species) were observed to determine location and relative number of glands. They were only observed on the abaxial leaf surface of 42 Bauhinia taxa. The glands were analyzed by light stereomicroscope and scanning electron microscopy. They are large (up to 270 µm long and 115 µm wide) and multicellular, containing lipophilic substances, probably volatile oils. Presence or absence and density of the glands in species of Bauhinia may be useful to determine species delimitation or distinction among infraspecific taxa. Higher density of glands is more common in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bauhinia; Brazilian forest; Leguminosae; Secretory structure; Taxonomy; Tropical ecosystems. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000200787 |
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| MARTINS,SHIRLEY; ALVES,MARCCUS; SCATENA,VERA L.. |
| ABSTRACT Cyperaceae is an angiosperm family with the greatest diversity of species with Kranz anatomy. Four different types of Kranz anatomy (chlorocyperoid, eleocharoid, fimbristyloid and rhynchosporoid) have been described for this angiosperm family, and the occurrence and structural characteristics of these types are important to trace evolutionary hypotheses. The purpose of this study was to examine the available data on Cyperaceae Kranz anatomy, emphasizing taxonomy, geographic distribution, habitat and anatomy, to infer the potential origin of the Kranz anatomy in this family. The results showed that the four types of Kranz anatomy (associated with C4 photosynthesis) in Cyperaceae emerged numerous times in unrelated phylogenetic groups. However, the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anatomy; Ultrastructure; Taxonomy; Phylogeny; Cyperaceae. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000502177 |
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| Machado,Angelo B.M.. |
| Carajathemis simone n. gen., n.sp. from the state of Pará, Brazil, is described and illustrated based on 22 specimens collected in a "canga" (laterite) lake within the forest at the Flona de Carajás, Parauapebas Municipality. The new libellulid genus fits in the subfamily Sympetrinae and the male keys out to Erythemis in Garrison et al. (2006). The new taxon has a combination of characters that makes it different from all genera of Sympetrinae including Erythemis. The species is remarkable by its large size, pleural striping and especially by the complex and strongly dimorphic leg armature. It seems to be restricted to shallow, rainfall-dependent, iron-rich lakes. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Taxonomy; Morphology; Dragonflies; Legs. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652012000400018 |
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| Senna,André R.. |
| A new amphipod species of the genus Elasmopus Costa, 1853 is described based on material collected from intertidal rocky shore, near the Suape Harbor, coast of the Brazilian state of Pernambuco. The new species may be recognized by the propodus of gnathopod 2 suboval, slightly tapering distally, palmar margin not defined by a stout seta, spine, or palmar corner, with a subdistal blunt tubercle, posterior margin covered by a dense fringe of plumose setae, and posterior margin of basis of pereopod 7 castelloserrate. This is the ninety-fifth species of the genus Elasmopus described worldwide, the most diverse genus in the family Maeridae Krapp-Schickel, 2008, and the eighth species recorded from Brazilian waters. An identification key to Brazilian species of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brazil; Elasmopus souzafilhoi sp. nov; Gammaridea; Intertidal; Pernambuco; Taxonomy. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652011000300021 |
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| DUMAS,LEANDRO L.. |
| ABSTRACT The caddisfly genus Contulma Flint, 1969, with 30 described species, is endemic to the Neotropics. In addition to the five species currently recorded from Brazil, a new species of Contulma is described and illustrated in this work. Contulma vascaina sp. n. is similar to C. sana Jardim and Nessimian, 2011 in prominent, slender and rod-like posterolateral lobe of segment IX, but the new species has a shorter posterolateral lobe, with long, spine-like seta apically. Contulma vascaina sp. n. can also be characterized by the presence of a large, hood-like sclerotized plate on the endothecal phallic membrane. The female genital structure is also described and illustrated. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Atlantic Forest; Caddisfly; Contulma; Female description; Taxonomy. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000602921 |
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| Costa,Henrique C.; Resende,Flávia C.; Teixeira Jr.,Mauro; Vechio,Francisco Dal; Clemente,Cinara A.. |
| A new species of Amphisbaena is described from a semi-deciduous forest in Conceição do Mato Dentro, southern Espinhaço Range, Minas Gerais, Brazil. The following combined characters can diagnose the new species from all congeners: head round-shaped; two or three precloacal pores sequentially arranged; 190-199 body annuli; 2-3 lateral annuli; 23-25 caudal annuli; autotomy sites on caudal annuli 7-9; 12-14 dorsal segments on midbody annulus; 14-16 ventral segments on midbody annulus; three supralabials; three infralabials; postmalar row present or absent; dorsum light brown, with cream intersegmental sutures; venter cream. To date, the new species is known only from the Espinhaço Range, highlighting the importance of conservation actions for these mountains. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Minas Gerais; Taxonomy; Amphisbaenia; Fossorial reptile. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000200891 |
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| Registros recuperados: 2.235 | |
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