Basilotritus uheni, a new cetacean (Cetacea, Basilosauridae) from the late middle Eocene of eastern Europe

2013 ◽  
Vol 87 (2) ◽  
pp. 254-268 ◽  
Author(s):  
Pavel Gol'din ◽  
Evgenij Zvonok

A new basal basilosaurid cetacean, Basilotritus uheni n. gen. n. sp., comes from the late middle Eocene (Bartonian) of Ukraine. It is the earliest dated record of a cetacean from Eastern Europe. The tympanic bulla of Basilotritus uheni shares basilosaurid synapomorphies but possesses unusual traits inherited from protocetids. Cetaceans related to Basilotritus uheni and referred to as Eocetus or “Eocetus” have been recorded from Africa, Europe, North America and South America. “Eocetus” wardii from North America is recombined as Basilotritus wardii. Platyosphys paulsonii and Platyosphys einori from Ukraine are considered as nomina dubia; specimens prior referred to as Platyosphys sp. are similar or related to Basilotritus. Other records of the Eocene cetaceans from Ukraine and south Russia are identified as Basilotritus or related genera. Early basilosaurids are demonstrated to be a paraphyletic, morphologically and geographically diverse group of the genera that colonized the world ocean as late as in Bartonian age and were probably the ancestors of Neoceti, as well as of more derived basilosaurids.

Author(s):  
Isabella K. Reichel ◽  
Grace Ademola-Sokoya ◽  
Mehdi Bakhtiar ◽  
Helen Barrett ◽  
Judit Bona ◽  
...  

This article features contributions of 15 young and experienced researchers and clinicians from 12 countries from Africa, Asia, Eastern Europe, the Middle East, South America, and North America. The growing fascination with cluttering continues to spread around the world, in a spirit of being open-minded to the ideas of colleagues from different cultures, languages, and streams of thought. The following topics discussed are believed to be of interest to consumers, practitioners, and researchers: conceptual and theoretical aspects of cluttering, awareness, and understanding of cluttering across countries and continents, professional preparation in cluttering, assessment, treatment, and support groups.


Phytotaxa ◽  
2018 ◽  
Vol 373 (1) ◽  
pp. 95
Author(s):  
TIM BÖHNERT ◽  
FEDERICO LUEBERT ◽  
MAXIMILIAN WEIGEND

The genus Atriplex Linnaeus (1753: 1052) (Chenopodiaceae Vent.; placed in Amaranthaceae Juss. s. l. in APG IV 2016) comprises about 300 species distributed mainly in subtropical, temperate, and subarctic regions of the world and is mostly adapted to dry conditions on often saline soils (Sukhorukov & Danin 2009, Kadereit et al. 2010, Iamonico 2013, APG IV 2016). The genus is highly diverse in Eurasia, Australia and North America. South America is another centre of diversity with ca. 55 species, 45 of which are considered as native (Brignone et al. 2016). A recent and exhaustive taxonomical synopsis of Atriplex for South America was published by Brignone et al. (2016), but there are also regional taxonomic revisions, e.g., for Chile by Rosas (1989), or Argentina by Múlgura de Romero (1981, 1982 & 1984).


Author(s):  
A. Sivanesan

Abstract A description is provided for Diplocarpon earliana. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOST: Fragaria. DISEASE: Strawberry leaf scorch. GEOGRAPHICAL DISTRIBUTION: Throughout temperate zones and extending into the tropics in Malaysia, Taiwan, Australia and New Guinea; Africa (Rhodesia, Zambia, South Africa, Canary Islands); Europe (except Ireland, Spain, Sweden, Russia); North America (Canada, USA, Jamaica); South America (Brazil, Uruguay); Asia (Armenia, Cambodia, Hong Kong, India, Israel, Japan, W. Malaysia). Appears to be most important in USA and eastern Europe (CMI Map 452, ed. 1, 1969). TRANSMISSION: Mainly by splash dispersal of conidia from infected leaves. Ascospores appear to be unimportant and in some regions (Poland; 46, 2074) where the perfect state has not been found.


Zootaxa ◽  
2020 ◽  
Vol 4816 (3) ◽  
pp. 392-396
Author(s):  
DAIZY BHARTI ◽  
FRANCISCO BRUSA ◽  
SANTOSH KUMAR ◽  
KAILASH CHANDRA

Catenulida are mostly inhabitants of freshwater ecosystems, like ponds, streams, though the marine species are few (Larsson and Willems, 2010). About 110 species of catenulids are known worldwide, with most of the studies conducted in South America (Marcus, 1945a, 1945b; Noreña et al., 2005), North America (Kepner and Carter 1931; Nuttycombe and Waters, 1938) and Scandinavian Peninsula (Luther, 1960, Larsson and Willems, 2010; Larsson et al., 2008). The diversity of catenulids from India has not been studied intensively; however some reports on other turbellaria exists for the country (Annandale, 1912; Whitehouse, 1913; Kapadia, 1947; Basil and Fernando, 1975; Apte and Pitale, 2011; Kalita and Goswami, 2012; Venkataraman et al., 2015). The genus Stenostomum, however, has been studied extensively around the world with identification of over 60 species (Tyler et al., 2006-2016). This is first report of the genus from India. The present study was part of the project to catalogue the diversity of free living protozoan ciliates from the Hooghly stretch of the Ganga River during which the flatworms were found. The worms were studied based on the live observations, with recognition of characters which led to its identification. This study serves to fill knowledge gap in the freshwater flatworms from India. 


Zootaxa ◽  
2019 ◽  
Vol 4656 (3) ◽  
pp. 475-486
Author(s):  
GIOVANNE M. CIDADE ◽  
DANIEL FORTIER ◽  
ASCANIO DANIEL RINCÓN ◽  
ANNIE SCHMALTZ HSIOU

The crocodylomorph fauna of the Cenozoic of South America is one of the richest and most diverse in the world. The most diverse group within that fauna is Alligatoroidea, with nearly all of its species belonging to the Caimaninae clade. Many of the fossil alligatoroid species from the Cenozoic of South America were proposed based on very incomplete remains, and as a result their validity requires revision. Two such species are Balanerodus logimus Langston, 1965, from the middle Miocene of Colombia and Peru, and Caiman venezuelensis Fortier & Rincón, 2012, from the Pliocene-Pleistocene of Venezuela. This study has performed a thorough review of the taxonomic status of these two alligatoroid species, concluding that B. logimus is a nomen dubium and that Ca. venezuelensis is a junior synonym of the extant species Ca. crocodilus. This review offers a significantly more accurate scenario for alligatoroid diversity in the Cenozoic of South America in different epochs such as the Miocene and Pleistocene. Additionally, the record of Ca. crocodilus from the Pleistocene of Venezuela is the first fossil record that can be assigned to this species. 


2020 ◽  
Vol 148 ◽  
Author(s):  
Najmul Haider ◽  
Alexei Yavlinsky ◽  
David Simons ◽  
Abdinasir Yusuf Osman ◽  
Francine Ntoumi ◽  
...  

Abstract Novel Coronavirus (2019-nCoV [SARS-COV-2]) was detected in humans during the last week of December 2019 at Wuhan city in China, and caused 24 554 cases in 27 countries and territories as of 5 February 2020. The objective of this study was to estimate the risk of transmission of 2019-nCoV through human passenger air flight from four major cities of China (Wuhan, Beijing, Shanghai and Guangzhou) to the passengers' destination countries. We extracted the weekly simulated passengers' end destination data for the period of 1–31 January 2020 from FLIRT, an online air travel dataset that uses information from 800 airlines to show the direct flight and passengers' end destination. We estimated a risk index of 2019-nCoV transmission based on the number of travellers to destination countries, weighted by the number of confirmed cases of the departed city reported by the World Health Organization (WHO). We ranked each country based on the risk index in four quantiles (4th quantile being the highest risk and 1st quantile being the lowest risk). During the period, 388 287 passengers were destined for 1297 airports in 168 countries or territories across the world. The risk index of 2019-nCoV among the countries had a very high correlation with the WHO-reported confirmed cases (0.97). According to our risk score classification, of the countries that reported at least one Coronavirus-infected pneumonia (COVID-19) case as of 5 February 2020, 24 countries were in the 4th quantile of the risk index, two in the 3rd quantile, one in the 2nd quantile and none in the 1st quantile. Outside China, countries with a higher risk of 2019-nCoV transmission are Thailand, Cambodia, Malaysia, Canada and the USA, all of which reported at least one case. In pan-Europe, UK, France, Russia, Germany and Italy; in North America, USA and Canada; in Oceania, Australia had high risk, all of them reported at least one case. In Africa and South America, the risk of transmission is very low with Ethiopia, South Africa, Egypt, Mauritius and Brazil showing a similar risk of transmission compared to the risk of any of the countries where at least one case is detected. The risk of transmission on 31 January 2020 was very high in neighbouring Asian countries, followed by Europe (UK, France, Russia and Germany), Oceania (Australia) and North America (USA and Canada). Increased public health response including early case recognition, isolation of identified case, contract tracing and targeted airport screening, public awareness and vigilance of health workers will help mitigate the force of further spread to naïve countries.


2020 ◽  
Vol 42 ◽  
pp. e44957
Author(s):  
Branimir Jaksic ◽  
Dragisa Miljkovic ◽  
Vladimir Maksimovic ◽  
Mile Petrovic ◽  
Branko Gvozdic

This paper considers the characteristics of satellite television transmission in the world. An overview of the development of satellite television is given through the following characteristics: broadcasting systems - analog and digital (SDTV, HDTV, UHDTV), frequency band (C, Ku, Ka), broadcasting standards (DVB-S, DVB-S2, DigiCipher, DSS), as well as the availability of TV services Free-To-Air TV (FTA) and PAY TV. All of these characteristics were considered both at the global and at the regional level: North America, South America, Europe, Africa, Russia, Asia, and Australia. The gathered data are presented in tabular form and presented graphically for the period from 1996 to 2018. Based on the presented results, an analysis of the development of satellite television transmission was carried out in accordance with the characteristics of the broadcast.


Author(s):  
Ovidiu Tichindeleanu ◽  
Douglas Rogers ◽  
Andrejs Ļevkins ◽  
Yulia Gradskova ◽  
Marina Sokolovskaja ◽  
...  

This section presents exchanges between intellectuals from Eastern and Western Europe, Russia, and North America who kindly agreed to read and comment on Martin Mueller’s article “In Search of the Global East”, relying on the situation in their own academic disciplines, work experiences, and the twists and turns of their scientific research and creative challenges. Researchers, academic teachers, exhibition curators, writers, and architects reflect on the power and influence which geographical names exert on academic life, politics, and culture. Starting from Mueller’s article on the Global East, as well as his other text wherein he expresses his skepticism of the concept of post-socialism, the commentators, evaluating Mueller’s arguments critically, raise a number of fundamental questions. Among these questions is the need to historicize scientific concepts, the issue of the regularly-reproducible misunderstanding (or even exclusion) of the East by Western intellectuals, the tasks the inclusion of the Global East in the overall geographical picture will contribute to, as well as the question of whether the concern that the Global East is not sufficiently heard in the world is narrowly academic. This indirect debate between the author of the key text in this thematic issue and his commentators is significant as an episode of the joint search for a more democratic, creative, and inspiring future for the region that unites Eastern Europe, Russia, and Central Asia.


2020 ◽  
Vol 6 (2) ◽  
pp. 85-108
Author(s):  
Arngrímur Vídalín

This article analyses five fourteenth-century Old Norse travel narratives in light of the learned geographical tradition of medieval Iceland. Three of the narratives, Þorvalds þáttr víðfǫrla, Eiríks saga víðfǫrla, and Yngvars saga víðfǫrla, focus on the travels of Nordic people to eastern Europe and Asia; while the latter two, Eiríks saga rauða and Grœnlendinga saga, tell of travels to the continent later named North America. While the travels to the East deal with pilgrimage and the search for the terrestrial Paradise in the service of individual salvation and missionary activities in Scandinavia and Iceland more specifically, the travels to the West are focused on the violent conquest and Christianization of newfound peripheral areas and their peoples. What these narratives have in common, and owe to the learned (Plinian) tradition, is their dehumanized view of foreign and strange people: the giants and monsters of the East, and the skrælingar (indigenous peoples) and einfœtingar (sciopods) of the West. In these sagas travels to the East, while dangerous, introduce heroes to courtly manners, encyclopedic knowledge, and salvation; whereas travels to the West lead to mayhem and death and all attempts at settlement there fail miserably, making Greenland the westernmost outpost of Christianity in the world. This article aims to show how this learned tradition was adapted for use in saga literature to contrast the monstrous and heathen periphery with the more central and piously Christian Iceland.


2014 ◽  
Author(s):  
Michael P Taylor

Dinosaur diversity is analyzed in terms of the number of valid genera within each major clade, Mesozoic age, place of discovery and year of description. Aves (Archaeopteryx + Neornithes) is excluded. Nomina nuda and nomina dubia are not counted. The results show 451 valid dinosaurian genera at the end of 2001, of which 282 are saurischian (112 sauropodomorphs and 170 theropods, including 93 coelurosaurs) and 169 ornithischian, including 11 pachycephalosaurs, 26 ceratopsians, 60 ornithopods, 12 stegosaurs, and 38 ankylosaurs. Thirty-eight genera arose in the Triassic, 124 in the Jurassic, and 289 in the Cretaceous, of which a disproportionately high number — 85 and 47 — are from the Campanian and Maastrichtian. The Kimmeridgian was the most productive age, with an average of 11.18 new genera per million years. The Kimmeridgian saw an unparalleled boom in sauropod diversity, with 20 new sauropod genera arising in its 3.4 million years, an average of one new sauropod every 170,000 years. Asia was the most productive continent with 149 genera, followed by North America (135), Europe (66), South America (52), Africa (39), Australasia (9), and finally Antarctica (1). Just three countries account for more than half of all dinosaur diversity, with 231 genera between them: the U.S.A (105), China (73), and Mongolia (53). The top six countries also include Argentina (44), England (30), and Canada (30), and together provide 335 dinosaur genera, nearly three quarters of the total. The rate of naming new dinosaurs has increased hugely in recent years, with more genera named in the last 19 years than in all the preceding 159 years. The results of these analyses must be interpreted with care, as diversity in ancient ecosystems is perceived through a series of preservational and human filters yielding observed diversity patterns that may be very different from the actual diversity.


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