scholarly journals Análise Palinotaxonômica e Bioestratigráfica da Subturma Monosaccites na Bacia do Paraná, Brasil. II: Gêneros Costatascyclus, Circumplicatipollis, Caheniasaccites, Stellapollenites e Divarisaccus

2008 ◽  
Vol 35 (2) ◽  
pp. 57 ◽  
Author(s):  
CRISTINA MOREIRA FELIX ◽  
PAULO ALVES DE SOUZA
Keyword(s):  
Pollen Grains ◽  
The Other ◽  
Intracratonic Basins ◽  
New Localities ◽  
Paraná Basin ◽  
Scientific Collections ◽  
Parana Basin ◽  
First Time ◽  
Paleoenvironmental Analysis

This paper presents a taxonomic and biostratigraphic analysis of the monosaccate pollen grains related to the genera Costatascyclus Felix & Burbridge emend. Urban 1971, Circumplicatipollis Ottone & Azcuy 1988, Caheniasaccites Bose & Kar 1966, Stellapollenites Lele 1965 and Divarisaccus Venkatachala & Kar 1966 recorded in the Pensylvannian - Permian interval in the Paraná Basin. These genera are represented by seven species: Costatascyclus crenatus Felix & Burbridge 1967, Circumplicatipollis plicatus Ottone & Azcuy 1988, Caheniasaccites flavatus Bose & Kar 1966, Caheniasaccites elongatus Bose & Kar 1966, Caheniasaccites verrucosus (González-Amicón) Gutiérrez 1993, Stellapollenites talchirensis Lele 1965 and Divarisaccus stringoplicatus Ottone 1991. Among these species, C. verrucosus is recorded for the first time to the Paraná Basin. Based on analysis of samples from new localities, new slides of published sections, from scientific collections, and on the examination of available papers, synonymic lists are shown, modifying the ranges of certain species. Respective occurrences of the taxa in the other Brazilian intracratonic basins (Amazonas and Parnaíba) are also analyzed. Furthermore, main morphologic distinctive characters of these species are presented, to facilitate the identification and their use in biostratigraphic and paleoenvironmental analysis.

scholarly journals Ascocerid cephalopods from the Hirnantian?–Llandovery stages of the southern Paraná Basin (Paraguay, South America): first record from high paleolatitudes

2018 ◽  
Vol 93 (1) ◽  
pp. 37-47
Author(s):  
M. Cichowolski ◽  
N.J. Uriz ◽  
M.B. Alfaro ◽  
J.C. Galeano Inchausti
Keyword(s):  
Rare Condition ◽  
First Record ◽  
High Latitudes ◽  
Stage Of Development ◽  
Intracratonic Basins ◽  
Mode Of Life ◽  
Paraná Basin ◽  
Parana Basin ◽  
First Time ◽  
Juvenile Shell

AbstractAscocerid cephalopods are described for the first time from high paleolatitudes of Gondwana. Studied material was collected from the Hirnantian?–Llandovery strata of the Eusebio Ayala and Vargas Peña formations, Paraná Basin, southeastern Paraguay. The specimens are poorly preserved and were questionably assigned to the subfamily Probillingsitinae Flower, 1941, being undetermined at genus and species rank because diagnostic characters are not visible. A particular feature seen in our material is the presence of both parts of the ascocerid conch (the juvenile or cyrtocone and the mature or brevicone) joined together, which is a very rare condition in the known paleontological record. The specimens are interpreted as at a subadult stage of development because fully grown ascocerids would have lost the juvenile shell. A planktonic vertical migrant mode of life with a subvertical attitude is proposed for the juvenile, and a horizontal demersal nektonic mode for the adult form, as has been previously suggested. A subvertical orientation near the bottom is proposed for the subadult stage. We suggest that the immigration of ascocerids to southwestern Gondwana was possible through ocean currents that would carry the planktonic juveniles from low to high latitudes during the end-Ordovician postglacial transgression that flooded the intracratonic basins of the region.

scholarly journals Moulting Patterns in Trilobites from the Devonian of Paraná Basin

Terr Plural ◽  
2021 ◽  
Vol 15 ◽  
pp. e2117837
Author(s):  
Ariane Daniele Piccoli ◽  
◽  
Fábio Augusto Carbonaro ◽  
Felipe Nascimento Sousa ◽  
Renato Pirani Ghilardi ◽  
...  
Keyword(s):  
The Other ◽  
Paraná Basin ◽  
Scientific Collections ◽  
Parana Basin

In general, trilobites had their moulting performed by the breakdown of the librigena, a region (more external) situated on the cephalon of those animals. However, phacopid (calmonid and homalonotid) trilobites from the Paraná Basin have shown a Salterian moulting pattern, differing from the other trilobites. This moult pattern consisted of the separation of all the cephalon to the thorax. So, this paper intends to demonstrate information regarding preservation standards resulting from behavior(moult) of trilobites from the Paraná Basin, as found in the literature specialized and studied scientific collections.

scholarly journals Biostratigraphy and paleoecology of an unusual palynological record from the Aquidauana Formation, Late Pennsylvanian of Paraná Basin

2015 ◽  
Vol 87 (2) ◽  
pp. 611-622 ◽  
Author(s):  
Paulo A. Souza ◽  
José A.J. Perinotto ◽  
Cristina M. Félix ◽  
Bruno C. Araújo
Keyword(s):  
Pollen Grains ◽  
Middle Portion ◽  
Mato Grosso ◽  
Paleontological Data ◽  
Reproduction Strategy ◽  
Paraná Basin ◽  
Parana Basin ◽  
Mato Grosso Do Sul ◽  
Glacial Climate ◽  
Sedimentary Unit

The Aquidauana Formation is a Permo-Carboniferous sedimentary unit, widely stratigraphicaly distributed in the northwestern and northern portions of the Paraná Basin. However, little paleontological data is available from this formation, preventing accurate biostratigraphic and paleoecological interpretations. An abundant, diversified and well preserved assemblage of palynomorphs was recognized from sampling conducted in an outcrop section in Cipolândia District of Aquidauana Municipality, state of Mato Grosso do Sul, Brazil. A total of 35 indigenous palynomorph taxa was recognized, comprising 6 species of spores (related to 5 genera), 28 species of pollen grains (14 genera) and 1 species of chlorophycean algae. Monosaccate pollen grains are exceptionally dominant, representing 90.38% of the association, particularly constituted by species of the genera Cannanoropollis (30.41% of the total assemblage), Potonieisporites (28.14%) and Plicatipollenites (19.52%). This quantitative overrepresentation is not usual from Gondwana deposits, revealing a particular plant dominance of Cordaitales in the terrestrial flora. These results are interpreted as an upland ecology characterized by plants with a moisture-independent reproduction strategy, under a glacial climate influence. Certain species of pollen allow assignment of this assemblage to the Crucisaccites monoletus Zone (Late Pennsylvanian), which had been recognized only in the middle portion of the Itararé Group at the northeastern margin of the basin.

The lichen Leptogium subaridum, a new Mediterranean-NW American disjunction

2004 ◽  
Vol 36 (2) ◽  
pp. 163-165 ◽  
Author(s):  
G. Aragón ◽  
I. Martínez ◽  
M. A. G. Otálora
Keyword(s):  
New Records ◽  
The Other ◽  
Southern Spain ◽  
Anatomical Terminology ◽  
New Localities ◽  
First Time

Several epiphytic specimens of the genus Leptogium (Ach.) Gray with a foliose thallus and numerous marginal and laminal isidia collected in central and southern Spain, and previously identified as Leptogium magnussonii Degel. & P. M. Jørg., varied considerably. Two morphological forms have been differentiated: one with clusters of granulose or coralloid, aggregated isidia, identified as typical L. magnussonii and the other with clavate to dactyliform isidia as in L. subaridum P. M. Jørg. & Goward. Meanwhile, when studying the lichen L. lichenoides from some European herbaria, three epiphytic specimens belonging to L. subaridum, one from Morocco, one from Italy and the other from Greece, were identified. These new records of the latter species extend its distribution from NW America to S Europe and N Africa. In addition, mature apothecia are reported for the first time. We briefly characterize the species based on material from the new localities using the morphological and anatomical terminology proposed in Jørgensen (1994).

scholarly journals Pisces, Gymnotiformes, Hypopomidae, Brachyhypopomus Mago-Leccia, 1994: first country record of three species of the genus, Argentina

Check List ◽  
2010 ◽  
Vol 6 (4) ◽  
pp. 572 ◽  
Author(s):  
Adriana Almirón ◽  
Jorge Casciotta ◽  
Liliana Ciotek ◽  
Pablo Giorgis ◽  
Paula Soneira ◽  
...  
Keyword(s):  
National Park ◽  
Paraná Basin ◽  
Parana Basin ◽  
First Time

Brachyhypopomus bombilla, B. draco and B. gauderio are recorded for the first time in freshwaters of Argentina. These species were collected in the Río Paraná basin at the Iberá Wetlands and Pre-Delta National Park. Brachyhypopomus bombilla, B. draco and B. gauderio can be sympatric and syntopic in Pre-Delta National Park, whereas B. bombilla and B. gauderio occupy the same environments in the Iberá Wetlands. Some records of B. brevirostris for Argentina are misidentifications of B. gauderio, whereas others could correspond to one of these three species.

scholarly journals ISOLATE TWO SPECIES OF COMPOSITAE FAMILY E.armatus BOISS&HAUSSKN AND E.cephalotes DC. BY MORPHOLOGICAL AND VEGETATIVE SHOOT APEX FOR THE FIRST TIME IN IRAQ

2017 ◽  
Vol 48 (5) ◽  
Author(s):  
Al-Musawi & et al.
Keyword(s):  
Plant Species ◽  
Shoot Apex ◽  
Pollen Grains ◽  
Reproductive Organs ◽  
The Other ◽  
Vegetative Shoot ◽  
Northern Areas ◽  
Vegetative Shoot Apex ◽  
Perennial Herbs ◽  
First Time

Present study delts with morphological and vegetative shoot apex characteristics of two species  Echinops armatus and E.cephalotes (compositae) which collected during trips field to the northern areas of Iraq in the seasons of growth 2012-2014. As it presents the results and characters  had been shown for the first time in Iraq. plant species are perennial herbs spinous with woody, strong and solid stems that covered with many types of indumentums like spines and hairs, the study included characters of stems, leaves, involucres bracts and inflorescences as well as characters of growing points of the two species, and by examining buds in inflorescences found that the flowers are hermaphrodite, not sterile which containing all the reproductive organs like stamens, pollen grains, pistils and ovaries, an early dehesence as mature anthers and bloom before the maturation of pistils and disperse their pollen.The study also discussed variations within the characters and it became clear that the characters of leaves, stems and involucres especially inner cycle, including the importance of taxonomic great isolate the two species. Ranged prepare involucres braces  in the first species is (20-23) bracts while the number varied between (19-20) bracts in the other one. The study showed the importance of growing points  in isolating the two species where characterized by two meristematic area in longitudinal embryos species. The first spices recognized by two rows of cells, while the other one marked three rows or layers of components of Tunica cells area, and ensures find accurate measurements of parts phenotypic as well as illustrations of morphological and anatomical parts studied.                   

New records of Ichthyostraca Zrzavý, Hypša & Vlášková, 1997 (Pancrustacea) from Mexico with an annotated checklist of North America

Zootaxa ◽  
2020 ◽  
Vol 4755 (1) ◽  
pp. 1-55
Author(s):  
OMAR LAGUNAS-CALVO ◽  
LUIS GARCÍA-PRIETO ◽  
DAVID OSORIO-SARABIA ◽  
VIRGINIA LEÓN-RÈGAGNON ◽  
ALEJANDRO OCEGUERA-FIGUEROA
Keyword(s):  
North America ◽  
Base Line ◽  
New Host ◽  
Specific Level ◽  
New Localities ◽  
The Usa ◽  
Scientific Collections ◽  
Annotated Checklist ◽  
First Time ◽  
New Host Records

In this work, we document for the first time four species of Ichthyostraca in Mexico, one Branchiura: Argulus foliaceus (fish parasite), and three Pentastomida: Porocephalus clavatus (reptile parasite), Raillietiella hebitihamata (reptile parasite) and Raillietiella orientalis (frog parasite). In addition, a total of 11 new host records and 16 new localities are presented for Ichthyostraca in Mexico. Based on the compilation of published information and on specimens deposited in scientific collections, the first checklist of Ichthyostraca from North America (Canada, United States of America and Mexico) is compiled. To March 2019, records of Ichthyostraca from North America include 64 species and 8 undetermined taxa, parasitizing 293 host species (64 of them identified only to a supra-specific level) in 77 provinces and states (8 from Canada, 47 from the USA, and 22 from Mexico). The subclass Branchiura is represented by 1 order, 1 family, 1 genus, 35 species and 1 undetermined taxa; the subclass Pentastomida includes records of 4 orders, 9 families, 14 genera, 29 species and 7 undetermined taxa. Ten species reported in this work are thought to be introduced into North America with only a few records of them parasitizing native hosts. This checklist summarizes the available records of this class of crustaceans in North America and represents a base line for future studies. 

scholarly journals An unexpected record of Simothraulopsis Demoulin, 1966 (Ephemeroptera, Leptophlebiidae) in the Paraná Basin, Brazil

Check List ◽  
2019 ◽  
Vol 15 (3) ◽  
pp. 375-378 ◽  
Author(s):  
Luiz R. R. Faria ◽  
Frederico F. Salles
Keyword(s):  
National Park ◽  
New Records ◽  
Light Trap ◽  
Paraná Basin ◽  
White Sheet ◽  
Parana Basin ◽  
First Time ◽  
Iguaçu River

We recorded for the first time the occurrence of the mayfly genus Simothraulopsis Demoulin, 1966 in the Paraná Basin. Adults of Simothraulopsis demerara (Traver, 1947) and Simothraulopsis diamantinensis Mariano, 2010 were collected using a white sheet light trap installed on the bank of Iguaçu River, near the falls in Iguaçu National Park, Brazil. These new records significantly expand southwards the distribution of the genus.

scholarly journals Fish fauna from tributaries throughout the Tibagi River basin, upper Paraná basin, Brazil

Check List ◽  
2015 ◽  
Vol 11 (6) ◽  
pp. 1815 ◽  
Author(s):  
Ana Cecília Hoffmann ◽  
Raul Henrique Cardoso Nascimento ◽  
Oscar Akio Shibatta
Keyword(s):  
Geographic Variation ◽  
River Basin ◽  
Fish Fauna ◽  
The Other ◽  
Expected Number ◽  
Lower Region ◽  
First Order ◽  
Number Of Species ◽  
Paraná Basin ◽  
Parana Basin

Fishes were collected at 36 sites in first order streams of Tibagi River basin, Paraná state, Brazil. A total of 2,669 individuals belonging to 47 species of 13 families and six orders were collected. The number of collected species represented 95.9% of the expected number of species for the studied area as estimated by Chao 1, and 93.4% by ACE, indicating an effective sampling. The highest richness was recorded in the tributaries at the lower region (Zone III) of the Tibagi River basin, with 33 species, including 16 species not found in the other regions of the basin. In the streams of the middle and upper regions (Zones II and I) each presented less richness, with 10 (two exclusive) and 25 (11 exclusive) species, respectively. This study shows a high geographic variation in the composition of fish fauna among zones, maybe related to historical and/or ecological influences.

scholarly journals Pollen morphology of Polish species from the genus Rubus L. (Rosaceae) and its systematic importance

2019 ◽  
Author(s):  
Kacper Lechowicz ◽  
Dorota Wrońska-Pilarek ◽  
Jan Bocianowski ◽  
Tomasz Maliński
Keyword(s):  
Pollen Morphology ◽  
Pollen Grains ◽  
Polar Axis ◽  
The Other ◽  
Individual Species ◽  
Bridge Structure ◽  
Interspecific Variability ◽  
Exine Ornamentation ◽  
First Time ◽  
Systematic Importance

AbstractThe genus Rubus L. (Rosaceae) has as yet not been investigated satisfactorily in terms of palynology. This genus is taxonomically very difficult due to the large number of species and problems with their delimitation, as well as very different distribution areas of particular species. The aim of this study was to investigate pollen morphology and for the first time the ranges of intrageneric and interspecific variability of Rubus species, as well as verify the taxonomic usefulness of these traits in distinguishing studied taxa from this genus. They were analysed for 11 quantitative pollen characteristics and the following qualitative ones: exine ornamentation, pollen outline and shape, as well as bridge structure. Analyses were conducted on a total of 1740 pollen grains, which represent 58 blackberry species belonging to a majority of subgenera and all the sections and series found in Poland. The diagnostic characters included exine ornamentation (exine ornamentation type, width and direction of grooves and striae, number and diameter of perforations) and length of the polar axis (P). The arrangement of the examined species on the dendrogram does not corroborate division of the genus Rubus into subgenera, sections and series currently adopted in taxonomy. The lack of dependence may result from apomixis observed in Rubus, which could reduce natural variability. Pollen features should be treated in taxonomy as auxiliary, because they fail to differentiate several (10) individual species, while the other ones create groups with similar pollen traits.

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