Geographical distribution and species diagnostics of the Carboniferous and Permian genus Gzheloceras (Cephalopoda: Nautiloidea)

2021 ◽  
pp. 267-273
Author(s):  
Vitaliy Dernov
Keyword(s):  
Geographical Distribution ◽  
Cross Section ◽  
Northern Hemisphere ◽  
Late Paleozoic ◽  
Early Permian ◽  
The Urals ◽  
Number Of Species ◽  
Centre Of Origin ◽  
Surface Ornamentation ◽  
North Western

The article is devoted to an attempt to trace the ways of distribution of Late Paleozoic nautilids Gzheloceras Ruzhencev et Shimansky, 1954. The genus Gzheloceras Ruzhencev et Shimansky (Cephalopoda: Nautiloidea) includes a large number of species from Carboniferous and Permian sediments. Representatives of the genus Gzheloceras were distributed mainly in the northern hemisphere. They inhabited the warm epicontinental seas of the northern and north-western periphery of the Palaeo-Tethys. Species of the genus Gzheloceras differ from each other by insignificant differences in the position of the siphuncle, the details of the surface ornamentation, less often in the form of suture and the shape of the cross section of the whorls. The form of the conch and a transverse ornamentation indicate a nectobenthic lifestyle of the genus Gzheloceras. The centre of origin of the genus is the waters on the place of modern Kazakhstan. In the Serpukhovian or Early Bashkirian, representatives of the genus Gzheloceras, apparently, dispersed into the Urals. The genus Gzheloceras flourished in the Early Permian of the Urals.

Lysimachia savranii (Primulaceae), a new species from the eastern Taurus in Turkey

Phytotaxa ◽  
2016 ◽  
Vol 267 (3) ◽  
pp. 228 ◽  
Author(s):  
İSA BAŞKÖSE ◽  
ALİ KESKİN ◽  
KAMAL GURBANOV
Keyword(s):  
New Species ◽  
North America ◽  
Northern Hemisphere ◽  
Mountain Regions ◽  
Number Of Species ◽  
Centre Of Origin ◽  
Tropical Mountain ◽  
Western Guizhou ◽  
A New Species

The genus Lysimachia Linnaeus (1753: 146) comprises about 180 species, distributed in temperate and subtropical parts of the northern hemisphere, as well as in some tropical mountain regions (Ray 1956). The majority of species grows in China, i.e. Yunnan, Southern Sichuan, Western Guizhou and Guangxi regions (Hu & Kelso 1996), which is also considered the centre of origin of this genus (Chen & Hu 1979). A limited number of species can be found in North America (20; Cholewa 2009), in Europe (13; Ferguson 1972), in Russia (11; Fedorov 1967), with 7 species occurring in Turkey (Coşkunçelebi 2012).

A new species of Sclerocephalus with a fully ossified endocranium gives insight into braincase evolution in temnospondyls

2021 ◽  
pp. 1-13
Author(s):  
Rainer R. Schoch ◽  
Gabriela Sobral
Keyword(s):  
New Species ◽  
Character Evolution ◽  
Late Paleozoic ◽  
New Taxon ◽  
Early Permian ◽  
Top Predator ◽  
Central European ◽  
Wide Range ◽  
A New Species ◽  
Insight Into

Abstract The late Paleozoic temnospondyl Sclerocephalus formed an aquatic top predator in various central European lakes of the late Carboniferous and early Permian. Despite hundreds of specimens spanning a wide range of sizes, knowledge of the endocranium (braincase and palatoquadrate) remained very insufficient in Sclerocephalus and other stereospondylomorphs because even large skulls had unossified endocrania. A new specimen from a stratigraphically ancient deposit at St. Wendel in southwestern Germany is recognized as representing a new taxon, S. concordiae new species, and reveals a completely ossified endocranium. The sphenethmoid was completely ossified from the basisphenoid to the anterior ethmoid region, co-ossified with the parasphenoid, and the basipterygoid joint was fully established. The pterygoid bears a slender, S-shaped epipterygoid, which formed a robust pillar lateral to the braincase. The massive stapes was firmly sutured to the parasphenoid. In the temnospondyl endocranium, character evolution involved various changes in the epipterygoid region, which evolved distinct morphologies in each of the major clades. UUID: http://zoobank.org/5e6d2078-eacf-4467-84cf-a12efcae7c0b

Tupinambine teiids from the middle Miocene of north-western Patagonia (Argentina)

2008 ◽  
Vol 29 (3) ◽  
pp. 425-431 ◽  
Author(s):  
Santiago Brizuela ◽  
Adriana María Albino
Keyword(s):  
Geographical Distribution ◽  
Middle Miocene ◽  
First Record ◽  
South American ◽  
The South ◽  
North Western

Abstract Remains of teiids assignable to the Tupinambinae (Tupinambis sp. or Crocodilurus sp.) are here described from the middle Miocene Collón Curá Formation at Cañadón del Tordillo, in Neuquén province, Argentina. No tupinambine species presently inhabits the region of the fossil locality. The fossils represent the westernmost distribution of fossil tupinambine teiids in Patagonia, enlarging the known geographical distribution of the teiids through the Miocene in a longitudinal range. Also, they constitute the first record of lizards from the Colloncuran SALMA, partially filling the record of tupinambine teiids for the South American Miocene.

The biology of two species of Engaeus (Decapoda : Parastacidae) in Tasmania. III. Habitat, food, associated fauna and distribution

1977 ◽  
Vol 28 (1) ◽  
pp. 95 ◽  
Author(s):  
PJ Suter ◽  
AMM Richardson
Keyword(s):  
Dissolved Oxygen ◽  
Geographical Distribution ◽  
Water Table ◽  
Freshwater Crayfish ◽  
Associated Fauna ◽  
Water Table Level ◽  
Burrow Structure ◽  
Study Sites ◽  
North Western ◽  
Temperature Water

The habitats of two apparently sympatric freshwater crayfish, Engaeus cisternarius and E. fossor, in north-western Tasmania were compared. At two study sites data on rainfall, temperature, water table level, dissolved oxygen and pH were collected. E. fossor occupies regions below the water table, whilst E. cisternarius occupies drier areas above the water table. The burrow structure, burrow fauna, ectofauna and food were compared. The geographical distribution of each species is discussed.

Melampsora medusae. [Descriptions of Fungi and Bacteria].

1975 ◽  
Author(s):  
J. Walker
Keyword(s):  
New Zealand ◽  
Geographical Distribution ◽  
Northern Hemisphere ◽  
Populus Deltoides ◽  
Leaf Damage ◽  
Main Method ◽  
Melampsora Medusae ◽  
Nursery Stock ◽  
Eastern Australia ◽  
Incremental Growth

Abstract A description is provided for Melampsora medusae. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Pycnia and aecia on Coniferae, especially Larix and Pseudotsuga, less commonly on Pinus and other genera (Ziller, 1965). Uredinia and telia on species of Populus, especially Populus deltoides, and its varieties and hybrids P. balsamifera, P. nigra var. italica and others. Its exact host range on species of Populus is not known due to confusion with other species of Melampsora and to uncertainty in the reported identity of some species of Populus and clones (Walker, Hartigan & Bertus, 1974). DISEASE: Leaf rust of poplars, causing severe leaf damage and early defoliation on susceptible species and clones. Continued defoliation of successive flushes of growth predisposes trees to winter injury and dieback (Peace, 1962) and can cause death of trees, especially nursery stock and trees 1-2 yr old (25, 204; 47, 241; Walker Haitigan & Bertus, 1974). Reduction in incremental growth of timber occurs with susceptible varieties. Some damage can occur to the conifer hosts. It is often severe on Pseudotsuga menziesii (45, 459; 47, 126) and in nurseries Pinus spp. and Larix spp. can be heavily attacked (Ziller, 1965). GEOGRAPHICAL DISTRIBUTION: North America (Canada, USA), Asia (Japan); Australasia and Oceania (Australia, New Zealand); Europe (France, Spain). Reports of Melampsora spp. on poplars (including P. deltoides and P. canadensis) from South America (Argentina, 21, 173), Uruguay (Lindquist & de Rosengurtt, 1967) may refer in part to M. medusae. TRANSMISSION: By air-borne urediniospores, often over long distances (suspected from eastern Australia to New Zealand). Urediniospores survive the winter in milder climates on semi-evergreen lines and on green sucker growth of deciduous trees. This is probably the main method of overwintering in the Southern Hemisphere and in warmer parts of the Northern Hemisphere. The possibility of bud carryover as occurs with M. epitea on Salix in Iceland (Jorstad, 1951) and the Canadian Arctic (Savile, 1972) should be investigated. Telia survive the winter and basidiospores formed in spring infect susceptible conifers in parts of the Northern Hemisphere (Ziller, 1965) but no conifer infection has so far been found in Australia.

scholarly journals Number of Species and Geographical Distribution of Diospyros L. (Ebenaceae) in China

2019 ◽  
Vol 5 (2) ◽  
pp. 59-69 ◽  
Author(s):  
Donglan Tang ◽  
Qinglin Zhang ◽  
Liqing Xu ◽  
Dayong Guo ◽  
Zhengrong Luo
Keyword(s):  
Geographical Distribution ◽  
Number Of Species

Amphipod biodiversity of shallow water in the Taranto seas (north-western Ionian Sea)

2005 ◽  
Vol 85 (2) ◽  
pp. 333-338 ◽  
Author(s):  
E. Prato ◽  
F. Biandolino
Keyword(s):  
Shallow Water ◽  
Dominant Species ◽  
New Records ◽  
Maximum Depth ◽  
Ionian Sea ◽  
Number Of Species ◽  
Gammarus Aequicauda ◽  
Different Depths ◽  
North Western

This study was carried out to determine the amphipod fauna in Mar Piccolo, Mar Grande and the Gulf of Taranto. Material in this study was obtained from 96 stations at different depths (maximum depth: −50 m) using various methods depending on the substrata. A total of 65 species was determined and 25 species are new records in the seas of Taranto. Microdeutopus gryllotalpa, Ericthonius brasiliensis, Monocorophium insidiosum, Elasmopus rapax, Gammarus aequicauda, Gammarus insensibilis, Leucothoe spinicarpa, Lysianassa costae and Pseudoprotella phasma were the dominant species and have been found in all areas considered. The comparison of the data shows that the area examined presents a high difference regarding biocenotic index. The highest number of species was collected in the Gulf with 1944 individuals, belonging to 58 species and 19 families, followed by Mar Grande with 1448 individuals belonging to 36 species and 11 families; finally Mar Piccolo with 698 individuals, 12 species and 6 families, in the First Inlet and 546 individuals, 18 species and 6 families, in the Second Inlet.

scholarly journals Contribution to the systematic knowledge of endemic Aubrieta pinardii Boiss. (Brassicaceae) from Turkey

2020 ◽  
Vol 27 (1) ◽  
pp. 27-35
Author(s):  
Emrah Şirin ◽  
Mehmet Cengiz Karaismailoğlu
Keyword(s):  
Electron Microscope ◽  
Chromosome Number ◽  
Scanning Electron Microscope ◽  
Geographical Distribution ◽  
Anatomical Structures ◽  
Seed Surface ◽  
Cytological Data ◽  
Surface Ornamentation ◽  
Systematic Knowledge ◽  
Scanning Electron

The aim of this study was to document the taxonomical, morphological, anatomical, palynological and cytological characters, and geographical distribution of endemic Aubrieta pinardii Boiss. (Brassicaceae) from Turkey. The description of the taxon was revised as a consequence of comprehensive assessments of many specimens. The surface pictures belonging to seed and pollen of the taxon were obtained by Scanning Electron Microscope. The seed surface ornamentation was rugose. The pollen was radially and isopolar and prolate in forms, with polar axes of 19.52 ± 0.29 μm and equatorial axes of 13.04 ± 0.22 μm, with oval outlines in the equatorial axes, and elliptical in the polar axes. They were three–colpate and colpus sizes varied between 12.98 μm and 13.29 μm in length, and between 1.33 and 2.09 μm in width. Also, the anatomical structures of the root, stem and leaf of species were studied. In cytological studies, the chromosome number of species was found as 2n = 16 (x =8). This was the first work including taxonomical, morphological (macro and micro), anatomical and cytological data of endemic Aubrieta pinardii. Bangladesh J.Plant Taxon. 27(1): 27-35, 2020 (June)

Sign in / Sign up

Export Citation Format

Share Document