A new metoposaurid amphibian from the upper Triassic Maleri formation of Central India

1965 ◽  
Vol 250 (761) ◽  
pp. 1-52 ◽  
Keyword(s):  
Close Association ◽  
Relative Rate ◽  
Nasal Bone ◽  
Central India ◽  
Morphological Characters ◽  
Upper Triassic ◽  
Godavari Valley ◽  
Orbital Position ◽  
Lacrimal Bone ◽  
Improved Methods

Improved methods of collection have led to the discovery of much better amphibian fossils from localities in the Upper Triassic Maleri formation of the Pranhita Godavari Valley. Some preliminary observations regarding the Maleri sediments and their relationship with the overlying and underlying rocks are noted. A composite restoration of the skull is given. The pattern of the dermal roofing bones, the shape of the skull and the position of the orbits clearly indicate that the material belongs to a metoposaurid amphibian. A new metoposaur species, Metoposaurus maleriensis is proposed and a description is given of its skull, braincase and palate. The presence of a prominent additional nasal bone on each side, exposed on the skull roof in one of the skulls of M. maleriensis and its absence in other skulls of this metoposaur is noted and the possible explanation for this condition is put forward. The position of the orbits varies according to the size of the skull; a comparison is made between the two more complete specimens to show that the orbits are more posteriorly placed in larger skulls. It is suggested that this difference in orbital position is probably due to the relative rate of activity of two zones of intensive growth in the skull, anterior and posterior to the orbits. Postcranial material includes three clavicles, interclavicle, humerus, ischium and eight intercentra including that of an atlas. These have also been assigned to M. maleriensis on the basis of close association and osteological characters. Study of the Maleri metoposaur and its comparison with the other adequately known genera, Metoposaurus from the Keuper of Europe and ‘Eupelor' from the Upper Triassic of North America, has demonstrated the weak foundation on which metoposaur genera are based. The position of the lacrimal bone has been used as one of the main morphological characters distinguishing between the previously recognized metoposaur genera. However, this character is variable within a subspecies recognized by Colbert & Imbrie, which suggests caution in its use in distinguishing between genera. The recognition of this feature further emphasizes the extremely close similarity between the metoposaur genera, already commented on by previous authors. The suggestion is made that these genera are morphologically indistinguishable and a revised taxonomy of the metoposaurs is put forward. The upper and lower stratigraphic limits of the metoposaurs are examined, and it is found that the metoposaurs are restricted to horizons equivalent to Carnian and Norian. The fauna associated with the metoposaurs in different parts of the world is discussed, and it is concluded that the age of the Maleri fauna is not younger than Middle Norian and probably not older than Carnian

A new species of Raspy cricket genus Gryllacris (Orthoptera: Gryllacrididae) from Central India

Zootaxa ◽  
2017 ◽  
Vol 4350 (1) ◽  
pp. 196
Author(s):  
SUNIL KUMAR GUPTA ◽  
KAILASH CHANDRA
Keyword(s):  
New Species ◽  
Adult Male ◽  
Central India ◽  
Morphological Characters ◽  
A New Species

Gryllacris durgensis sp. nov. is described from the Durg district, Chhattisgarh, India. The detailed morphological characters of adult male, female and nymph are provided. 

A novel phylogenetic group withinThozetella(Chaetosphaeriaceae): a new taxon based on morphology and DNA sequence analyses

2009 ◽  
Vol 55 (6) ◽  
pp. 680-687 ◽  
Author(s):  
R. Jeewon ◽  
S. Y.Q. Yeung ◽  
K. D. Hyde
Keyword(s):  
Rna Polymerase Ii ◽  
Close Association ◽  
Pinus Elliottii ◽  
Morphological Characters ◽  
Molecular Data ◽  
New Taxon ◽  
Protein Coding ◽  
Phylogenetic Framework ◽  
The Relationship ◽  
Insight Into

A new species, Thozetella pinicola , was isolated from leaf litter of Pinus elliottii Engelm. in Hong Kong. This taxon is described and compared with existing species in the genus. It occurs on the substrate as creamy white sporodochia and has short black conidiophores. Morphological characters are typical of Thozetella and it most closely resembles Thozetella falcata , Thozetella gigantea and Thozetella nivea , but may be distinguished by its distinct microawns and different conidial size. To gain further taxonomic insight into the phylogenetic relationships of our new taxon and its allies, we sequenced and analysed 6 different regions of 3 genes (ribosomal DNA and protein coding genes: RNA polymerase II largest subunit (RBP2) and β-tubulin). Resulting phylogenies are compared with existing morphological information. Molecular data support the relationship between Thozetella species and the Chaetosphaeriaceae (Chaetosphaeriales, Sordariomycetes). In addition, we recovered a new phylogenetic lineage (or group) within the existing phylogenetic framework of Thozetella as previously proposed. In particular, there is a close association between T. pinicola and T. nivea, which is strongly supported. The affinities of these 2 newly sequenced taxa are discussed in light of morphological and molecular characters.

Lithological variations and drainage evolution in a marginal region: A case study from Chandrapur block of the Pranhita-Godavari Basin, Central India.

2020 ◽  
Vol 37 (2) ◽  
pp. 103-114
Author(s):  
Vijay Sharma ◽  
Aditya Kumar Verma
Keyword(s):  
Hydrothermal Solution ◽  
Central India ◽  
Weathering Profile ◽  
Stratigraphic Sequence ◽  
Godavari Valley ◽  
Degree Of Consolidation ◽  
Cenozoic Era ◽  
High Degree ◽  
Marginal Region

Field mapping and interpretation of sedimentary structures in Gojoli region of Chandrapur block along the eastern margin of the Pranhita-Godavari valley suggests westward flowing channels during the Neoproterozoic. Present channels in this part of Chandrapur block are south/ southeast flowing and possess clear imprints of the basin-margin faults and lineaments. Drainage parameters in its Neoproterozoic stratigraphic sequence suggest impervious substrates probably due to high degree of consolidation and filling of rock-fractures by hydrothermal solution activities. However, the same for the Gondwana’s friable sandstone (towards western region) and Archaean gneisses (in the eastern part) has been observed consistent probably due to its porous nature and development of thick weathering profile. The affiliation of drainage with tectonism is therefore, from Neoproterozoic to Cenozoic era within contrasting lithology, was out of synchronization intermittently.

Paleogeographic and tectonic evolution of the Pranhita-Godavari Valley, Central India: a Stratigraphic perspective

2012 ◽  
Vol 312 (7) ◽  
pp. 766-815 ◽  
Author(s):  
A. K. Chaudhuri ◽  
G. K. Deb ◽  
S. Patranabis-Deb ◽  
S. Sarkar
Keyword(s):  
Tectonic Evolution ◽  
Central India ◽  
Godavari Valley

On the taxonomic status of Teyuwasu barberenai Kischlat, 1999 (Archosauria: Dinosauriformes), a challenging taxon from the Upper Triassic of southern Brazil

Zootaxa ◽  
2019 ◽  
Vol 4629 (1) ◽  
pp. 146-150 ◽  
Author(s):  
MAURÍCIO S. GARCIA ◽  
RODRIGO T. MÜLLER ◽  
SÉRGIO DIAS-DA-SILVA
Keyword(s):  
Close Association ◽  
Taxonomic Status ◽  
Upper Triassic ◽  
Complete List ◽  
Late Triassic ◽  
Zoological Nomenclature ◽  
Single Individual ◽  
Southern Brazil ◽  
Symposium Abstract ◽  
Initial Description

The controversial dinosauriform Teyuwasu barberenai Kischlat, 1999 (Fig. 1B) is based on a right femur (BSPG AS XXV 53) and tibia (BSPG AS XXV 54), formerly referred to the pseudosuchian ‘Hoplitosuchus raui’ (= Hoplitosaurus raui) Huene, 1938 (see also Huene, 1942). This material comes from a classic Late Triassic (Carnian) locality in southern Brazil (Fig. 1A), the Cerro da Alemoa outcrop on the Alemoa complex, that has yielded several noteworthy tetrapod specimens (see Garcia et al., 2019, for a complete list of references). When reviewing these abovementioned materials, Kischlat (1999) considered it to belong to a “robust saurischian dinosaur”, but later this taxon was considered to be a nomen dubium (Langer et al., 2010; Ezcurra, 2012). Foremost, the initial description of this taxon is problematic, because Kischlat (1999) presented it in a symposium abstract which does not constitute a published work [which is not allowed under the Art. 9.10 of the International Commission on Zoological Nomenclature (ICZN)]. Moreover, the author did not list traits that clearly differentiated Teyuwasu from other coeval dinosauriforms (cf. Art. 13 of the ICZN, see further below). In particular, it was not adequately distinguished from Staurikosaurus pricei Colbert, 1970 (Fig. 1B), which also comes from the same Alemoa complex, but from another nearby outcrop (Sanga Grande/Sanga de Baixo) considered equivalent in stratigraphic level and horizon with the lower levels of the Cerro da Alemoa site (Huene, 1942; Colbert, 1970; see also Garcia et al., 2019) (Fig. 1A). However, Huene (1942) did not clearly specify that the materials (femur and tibia) later assembled by Kischlat (1999) into the holotype of Teyuwasu were found in close association, although Huene (1942) cited that they come from the same stratigraphical level and horizon, and to our interpretation, their morphology and preservational features are compatible. Still, assigning these bones as part of a single individual is tentative. 

New dinosaur species from the Upper Triassic Upper Maleri and Lower Dharmaram formations of Central India

2010 ◽  
Vol 101 (3-4) ◽  
pp. 333-349 ◽  
Author(s):  
Fernando E. Novas ◽  
Martin D. Ezcurra ◽  
Sankar Chatterjee ◽  
T. S. Kutty
Keyword(s):  
South Africa ◽  
South America ◽  
Central Africa ◽  
Central India ◽  
Upper Triassic ◽  
South American ◽  
Dinosaur Evolution ◽  
Godavari Basin

ABSTRACTThe beginning of dinosaur evolution is currently known based on a handful of highly informative Gondwanan outcrops of Ischigualastian age (late Carnian–early Norian). The richest Triassic dinosaur records of the southern continents are those of South America and South Africa, with taxonomically diverse faunas, whereas faunas from India and central Africa are more poorly known. Here, the known diversity of Gondwanan Triassic dinosaurs is increased with new specimens from central India, which allow a more comprehensive characterisation of these dinosaur assemblages. Five dinosauriform specimens are reported from the probable late Norian–earliest Rhaetian Upper Maleri Formation, including two new sauropodomorph species, the non-plateosaurian Nambalia roychowdhurii and the plateosaurian Jaklapallisaurus asymmetrica, a guaibasaurid and two basal dinosauriforms. The Lower Dharmaram Formation, probably latest Norian–Rhaetian in age, includes basal sauropodomorph and neotheropod remains, providing the second record of a Triassic Gondwanan neotheropod. The currently available evidence suggests that the oldest known Gondwanan dinosaur assemblages (Ischigualastian) were not homogeneous, but more diverse in South America than in India. In addition, the Upper Maleri and Lower Dharmaram dinosaur assemblages resemble purported coeval South American and European beds in the presence of basal sauropodomorphs. Accordingly, the current available evidence of the Triassic beds of the Pranhita–Godavari Basin suggests that dinosaurs increased in diversity and abundance during the late Norian to Rhaetian in this region of Gondwana.

scholarly journals KARAKTERISASI MORFOLOGI SENGON (Paraserianthes falcataria L. Nielsen) HASIL MUTASI RADIASI SINAR GAMMA Morphological Characterization of Sengon (Paraserianthes falcataria L. Nielsen) Gamma Radiation Mutation Results

2017 ◽  
Vol 8 (1) ◽  
pp. 41-47
Author(s):  
Roisatuz Zakiyah ◽  
Ulfah Juniarti Siregar ◽  
N. Sri Hartati
Keyword(s):  
Gamma Radiation ◽  
Wood Density ◽  
Close Association ◽  
Morphological Characters ◽  
Improvement Program ◽  
Branch Number ◽  
Paraserianthes Falcataria ◽  
Stem Straightness ◽  
Mutant Lines ◽  
Number Of Branches

Mutation is a process of change in genetic structure of particular organisme. Genetic changes due to mutation can produce new characteristic and increase genetic diversity, which will be utilized for improvement program. Several artificial mutation programs have proved to produce new superior individual. One common artificial mutation used is gamma radiation. This study aimed to characterize 9 years old gamma irradiated sengon trees, with doses 0, 5, 10, and 15 krad based on its morphological characters, wood density, resistant to diseases. The observed parameters were tree diameter, height, volume, clear bole height, stem straightness, permanent branch, number of branches, canopy length, wood density and resistance to gall rust disease. Average values of all parameters of mutant lines does not differ significantly from control trees, however some individuals have better morphological characters than others. Mutant lines with 5 krad dose have close association with permanent branch and stem straightness, 15 krad dose with volume, diameter, height and crown length, while 10 krad with number of branches. Average wood density of mutant lines did not differ significantly from control either, with highest value belonged to 10 krad dose. Selected superior tree candidates were individuals with number 5.07, K1, 15.27, and 15 NN.Key word: breeding, characterization, mutation, sengon.

Two new Parastenocarididae (Copepoda, Harpacticoida) from India: Parastenocaris muvattupuzha n. sp. from a river and P. kotumsarensis n. sp. from a cave

Zootaxa ◽  
2009 ◽  
Vol 2077 (1) ◽  
pp. 31-55 ◽  
Author(s):  
YENUMULA RANGA REDDY ◽  
DANIELLE DEFAYE
Keyword(s):  
New Species ◽  
Hyporheic Zone ◽  
Indian Subcontinent ◽  
Central India ◽  
Morphological Characters ◽  
The State ◽  
The Family ◽  
Geographical Scale ◽  
Species Groups ◽  
Distal Corner

To date, 11 harpacticoid species from the family Parastenocarididae are known to occur on the Indian subcontinent. Of these, ten species belong to the genus Parastenocaris Kessler, 1913, and one to the genus Kinnecaris Jakobi, 1972. Two new species of the genus Parastenocaris, viz. P. muvattupuzha n. sp. and P. kotumsarensis n. sp., are described and illustrated herein from India and their taxonomic position within the genus Parastenocaris discussed. Parastenocaris muvattupuzha n. sp. was found in the hyporheic zone of the River Muvattupuzha in the State of Kerala, southwestern India. Having a unique set of morphological characters, this new species does not perfectly fit into any of the known Parastenocaris species-groups; it is treated as Parastenocaris s. l. It stands out in the genus, inter alia, by the presence of a distinct unguiform process at the inner distal corner of each caudal ramus in both sexes and a club-shaped, distally spinulose leg 4 endopod in the male. Parastenocaris kotumsarensis n. sp. is described based on specimens collected from Kotumsar Cave in the State of Chhattisgarh, central India. This species shares features with the brevipes-group of Parastenocaris (i.e. similar endopodal complex of the male leg 4) and the recently redefined genus Kinnecaris (i.e. presence of the triangular platelike fifth legs, which are similar in both sexes, and paired ventrolateral integumental windows on the antepenultimate and penultimate urosomites). Hence, for the time being, this species, like the preceding one, is also treated as Parastenocaris s. l. Parastenocaris kotumsarensis n. sp. is the first cavernicolous parastenocaridid from India and, on a broader geographical scale, from southern Asia.

A rhynchosaur from the Upper Triassic Maleri Formation of India

1974 ◽  
Vol 267 (884) ◽  
pp. 209-261 ◽  
Keyword(s):  
Morphological Characters ◽  
Upper Triassic ◽  
Indian Statistical Institute ◽  
Evolutionary Trends ◽  
Tooth Replacement ◽  
Flood Plains ◽  
Statistical Institute ◽  
The Family ◽  
Three Stages ◽  
Indian Statistical

Six associated rhynchosaur skeletons, recently discovered by the Geological Studies Unit of the Indian Statistical Institute in the Upper Triassic Maleri Formation, allow an almost complete osteological description and restoration of the species Paradapedon huxleyi . The dentition is highly specialized, ankylothecodont, each tooth firmly fixed with a long root, new teeth added posteriorly in diagonal rows, without tooth replacement. The creatures probably lived in flood-plains or marshy environments, as shell eaters feeding mainly on mussels. Possible evolutionary trends within the family Rhynchosauridae are outlined. The seven genera of rhynchosaurs are grouped on their morphological characters into three well-defined subfamilies which represent three stages in rhynchosaur evolution, occurring in Lower, Middle and Upper Triassic respectively.

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