Global Carboniferous brachiopod biostratigraphy

2021 ◽  
pp. SP512-2020-225
Author(s):  
Lucia Angiolini ◽  
Gabriela A. Cisterna ◽  
Bernard Mottequin ◽  
Shu-Zhong Shen ◽  
Giovanni Muttoni

AbstractWe present an updated look at the Carboniferous brachiopod biozonation from most of the world framed into a revised Carboniferous palaeogeography, based on a selection of the literature published on Carboniferous brachiopods since the Nineteenth century. The biostratigraphic significance of the most important brachiopod taxa is synthetized in seven geographic correlations.The Mississippian is characterized by rich brachiopod faunas, with widespread taxa with a good potential for global correlation, such as Rugosochonetes, Delepinea, Buxtonia, Antiquatonia, Spinocarinifera, Marginatia, Fluctuaria, Ovatia, Rhipidomella, Lamellosathyris, Unispirifer, Tylothyris, and Syringothyris. From the mid–Viséan to the late Serpukhovian, taxa of gigantoproductidines are biostratigraphically significant, and occur everywhere except for South America and Australia, which remain as distinct faunal successions for most of the period. A major turnover occurs at the beginning of the Pennsylvanian, characterized by a higher degree of provincialism. Pennsylvanian brachiopod faunas are diverse in China, Russia and North America, but otherwise they are less developed and they are characterized mostly by endemic taxa, hampering long–distance correlation. An exception is the rapid diversification of taxa of the Choristitinae, which were widespread from the Bashkirian to the Moscovian, allowing long–distance correlation.

2017 ◽  
Vol 104 (11) ◽  
pp. 1717-1728 ◽  
Author(s):  
C. Matt Guilliams ◽  
Kristen E. Hasenstab-Lehman ◽  
Makenzie E. Mabry ◽  
Michael G. Simpson

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).


2021 ◽  
Author(s):  
Kelli S Ramos ◽  
Aline C Martins ◽  
Gabriel A R Melo

Bees are presumed to have arisen in the early to mid-Cretaceous coincident with the fragmentation of the southern continents and concurrently with the early diversification of the flowering plants. Among the main groups of bees, Andreninae sensu lato comprise about 3000 species widely distributed with greatest and disjunct diversity in arid areas of North America, South America, and the Palearctic region. Here, we present the first comprehensive dated phylogeny and historical biogeographic analysis for andrenine bees, including representatives of all currently recognized tribes. Our analyses rely on a dataset of 106 taxa and 7952 aligned nucleotide positions from one mitochondrial and six nuclear loci. Andreninae is strongly supported as a monophyletic group and the recovered phylogeny corroborates the commonly recognized clades for the group. Thus, we propose a revised tribal classification that is congruent with our phylogenetic results. The time-calibrated phylogeny and ancestral range reconstructions of Andreninae reveal a fascinating evolutionary history with Gondwana patterns that are unlike those observed in other subfamilies of bees. Andreninae arose in South America during the Late Cretaceous around 90 Million years ago (Ma) and the origin of tribes occurred through a relatively long time-window from this age to the Miocene. The early evolution of the main lineages took place in South America until the beginning of Paleocene with North American fauna origin from it and Palearctic from North America as results of multiple lineage interchanges between these areas by long-distance dispersal or hopping through landmass chains. Overall, our analyses provide strong evidence of amphitropical distributional pattern currently observed in Andreninae in the American continent as result at least three periods of possible land connections between the two American landmasses, much prior to the Panama Isthmus closure. The andrenine lineages reached the Palearctic region through four dispersal events from North America during the Eocene, late Oligocene and early Miocene, most probably via the Thulean Bridge. The few lineages with Afrotropical distribution likely originated from a Palearctic ancestral in the Miocene around 10 Ma when these regions were contiguous, and the Sahara Desert was mostly vegetated making feasible the passage by several organisms. Incursions of andrenine bees to North America and then onto the Old World are chronological congruent with distinct periods when open-vegetation habitats were available for trans-continental dispersal and at the times when aridification and temperature decline offered favorable circumstances for bee diversification.


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. 


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.


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.


1985 ◽  
Vol 9 (2) ◽  
pp. 145-166
Author(s):  
Thomas E. Jordan

The nineteenth century saw the beginning of large-scale migration of population from western Europe to various countries of the world. North and South America had proven hospitable in previous centuries and the southern tip of Africa presented an equable climate as well as strategic location. The islands of the southern seas reached by Cook and Van Diemen proved equally attractive if more remote. In retrospect it seems inevitable that, with the exception of South America, they were bound to be English-speaking. Even South America had its British farming colonists at one stage. In 1826 just under two hundred Highland Scots embarked for Topo in the highlands of Colombia (United Kingdom, 1827). Significantly, one hundred and two of them were under fourteen years of age.


2012 ◽  
Vol 7 (3) ◽  
pp. 389-414 ◽  
Author(s):  
Arthur Downing

AbstractBritish clubs and societies spread around the English-speaking world in the long nineteenth century. This article focuses on one particularly large friendly society, the Manchester Unity Independent Order of Oddfellows (MU), which by 1913 had more than a thousand lodges around the world, especially concentrated in Australia and New Zealand. The MU spread so widely because of micro-social and macro-social forces, both of which this article investigates. It also examines the transfer of members, funds, and information between different districts of the society, and argues that such transfers may have smoothed internal and long-distance migration.


2015 ◽  
Vol 6 (2) ◽  
Author(s):  
Stuart Barnard

The reading and study of bibles in Canada has shaped the ways in which the Christian faith is practiced, but it was not until the middle of the nineteenth century that bibles became widely available. This article examines the historical developments of bible distribution in British North America, focusing on the British and Foreign Bible Society (BFBS), which became the largest distributor of bibles in the world. Strengthening the BFBS's Canadian influence was its agent James Thomson, whose work in British North America between 1838 and 1842 expanded the organization’s reach and ensured an ample supply of bibles in the colonies. Through the expansion of local Bible Society auxiliaries and the establishment of distribution networks, Thomson laid the foundations for the BFBS’s success in establishing a successful bible enterprise that would dominate the trade in British North America for the rest of the century.


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