A new approach to Corystospermales based on Triassic permineralized stems from Argentina

Anatomically preserved mature stems of late Middle Triassic corystosperms from the Paramillo Formation of Argentina are described and assigned to Cuneumxylon spallettii gen. nov. et sp. nov. The silicified specimens show features of the pith, primary xylem and successive rings of secondary xylem and phloem. The most striking characteristic is the anomalous secondary growth, represented by secondary xylem bounded by arcs of secondary phloem probably derived from successive repositioned cambia. Cuneumxylon has two kinds of unusual centrifugal secondary growth. The first shows unequal activity of different portions of the cambium on the circumference of the axes; the consequent restriction of cambial activity to certain restricted areas develops wedged stems, which often split. The second produces polyxylic stems following supernumerary cambial activity. As in extant plants growing in arid regions, the included phloem and the associated parenchyma may have had functional value avoiding desiccation of the outer tissues of the stem during droughts. Anatomical features of other Corystospermaceae were used to determine systematic affinities and to establish relationships among medullosans, corystosperms and cycads.     

An Early Permian brachiopod–gastropod fauna from the Calytrix Formation,Barbwire Terrace,Canning Basin,Western Australia

Taboada, A.C., Mory, A.J., Shi, G.R., Haig, D.W. & Pinilla, M.K., 12.11.2014. An Early Permian brachiopod–gastropod fauna from the Calytrix Formation, Barbwire Terrace, Canning Basin, Western Australia. Alcheringa 39, xxx–xxx. ISSN 0311-5518

A small brachiopod–gastropod fauna from a core close to the base of the Calytrix Formation within the Grant Group includes the brachiopods Altiplecus decipiens (Hosking), Myodelthyrium dickinsi (Thomas), Brachythyrinella narsarhensis (Reed), Neochonetes (Sommeriella) obrieni Archbold, Tivertonia barbwirensis sp. nov. and the gastropod Peruvispira canningensis sp. nov. The fauna has affinities with that of the late Sakmarian?early Artinskian Nura Nura Member directly overlying the Grant Group in other parts of the basin but, as with all lower Cisuralian (and Pennsylvanian) glacial strata in Western Australia, its precise age remains poorly constrained, especially in terms of correlation to international stages. Although the Calytrix fauna lies within the Pseudoreticulatispora confluens Palynozone, the only real constraint on its age (and that of the associated glacially influenced strata) is from Sakmarian (Sterlitamakian) and stratigraphically younger faunas. A brief review of radiometric ages from correlative strata elsewhere in Gondwana shows that those ages need to be updated. The presence of Asselian strata and the position of the Carboniferous?Permian boundary remain unclear in Western Australia.

Arturo César Taboada [ataboada@unpata.edu.ar], CONICET-Laboratorio de Investigaciones en Evolución y Biodiversidad (LIEB), Facultad de Ciencias Naturales, Sede Esquel, Universidad Nacional de la Patagonia ‘San Juan Bosco’, Edificio de Aulas, Ruta Nacional 259, km. 16,5, Esquel U9200, Chubut, Argentina; Arthur Mory [arthur.mory@dmp.wa.gov.au], Geological Survey of Western Australia, 100 Plain Street, East Perth, WA 6004, School of Earth and Environment, The University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia; Guang R. Shi [grshi@deakin.edu.au], School of Life and Environmental Sciences, Deakin University, Melbourne Burwood Campus, 221 Burwood Highway, Burwood, Victoria 3125, Australia; David W. Haig [david.haig@uwa.edu.au], School of Earth and Environment (M004), The University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia; María Karina Pinilla [mkpinilla@fcnym.unlp.edu.ar], División Paleozoología Invertebrados, Museo de Ciencias Naturales de La Plata, Paseo del Bosque s/n, 1900 La Plata, Buenos Aires, Argentina.     

The southernmost records of Anhingidae and a new basal species of Anatidae (Aves) from the lower–middle Miocene of Patagonia,Argentina

New bird fossils from the Santa Cruz Formation (lower–middle Miocene), Santa Cruz Province, Patagonia, Argentina, are described. They represent an indeterminate species of the extinct anhingid Macranhinga and a new genus and species of basal Anatidae Ankonetta larriestrai. The record of the giant darter Macranhinga constitutes the southernmost record for the family, and expands the known stratigraphic range of the genus, previously restricted to the upper Miocene. Based on an analysis of the fossil anhingid record from South America, we hypothesize that giant darters disappeared from South America in the early Pliocene due to climatic deterioration, regression of marine and freshwater environments, the arrival of placental carnivorous mammals, and also probably by competition with phalacrocoracid cormorants. The new anatid Ankonetta is based on an incomplete but informative tarsometatarsus, with superficial similarities to extant Dendrocygna. A brief overview of several fossil ducks from the Patagonian Cenozoic concludes that most pre-Pliocene examples belong to non-anatine taxa, indicating that plesiomorphic ducks were the dominant anseriforms in those times, a pattern also evident on other continents.     

First record of fossil woods from the Mariño Formation (Miocene), Mendoza,Argentina and their palaeobiogeographical implications

The first Miocene records of silicified fossil woods from the Mariño Formation, Potrerillos area, Andes Precordillera, Mendoza province, Argentina are described. Rhaphithamnoxylon artabeae gen. et sp. nov. is described as the first fossil wood referable to Verbenaceae from Argentina. This new fossil species is related to extant Rhaphithamnus Miers, sharing the following anatomical features: diffuse porosity, distinct growth ring boundaries, numerous small to very small vessels, commonly in radial multiples, 1–3 seriate rays, and heterocellular and scarce paratracheal axial parenchyma. Rhaphithamnus contains only two extant species: R. spinosus (A.L. Juss.) Moldenke, which occurs in the Valdivian forests of Chile and Argentina, and R. venustus (Philippi) Robinson, which is endemic to the Juan Fernández Islands. Representatives of Verbenaceae are distributed predominantly in the Americas from Patagonia (Argentina) to Canada, and they are inferred to have originated in South America. The fossil wood described herein provides new age and geographical constraints on the raphithanoid lineage within Verbenaceae. Other fossil woods recorded from the Mariño level are retained under open nomenclature, as they possess a combination of mostly solitary broad vessels, and smaller vessels in radial multiples or in clusters, with numerous, vasicentric to confluent axial parenchyma, and heterocellular, high rays. Thus, they have features akin to dicotyledonous lianas or vine-like or small shrub species.     

Permian palynostratigraphy of the Claromecó Basin,Argentina

The first palynozonation for Permian strata of the Claromecó Basin (Argentina) is formally proposed, based on palynological assemblages recovered from the UTAL.CMM1 La Estrella.x-1 and UTAL.CMM1 Cruz de Sur.x-1 boreholes, drilled on the Argentinian Continental Platform and correlation with established zones from neighbouring basins. Fifty-five samples were analyzed and 131 species identified from two biozones. The lower Converrucosisporites confluens–Vittatina vittifera (CV) Zone occurs in the Piedra Azul and Bonete formations of both boreholes. This zone can be assigned a Cisuralian–Guadalupian age. The upper Tornopollenites toreutos–Reduviasporonites chalastus (TC) Zone registered in the Tunas Formation can be assigned a Guadalupian–Lopingian age. The CV Zone is dominated by diverse non-taeniate bisaccate, plicate and taeniate pollen. Monosaccate and monosulcate pollen, algae and acritarchs are poorly represented in both biozones. The composition of the TC Zone is broadly similar to the CV Zone, but bisaccate pollen grains are markedly more diverse and abundant in the former.     

First record of squamate reptiles from the Oligocene of South America

Squamata are known from South America since the Cretaceous, but their fossil record has an occurrence gap between the late Eocene and early Miocene. Fossils recovered from the Sarmiento Formation (Deseadan South American Land Mammal Age, late Oligocene) at Cabeza Blanca (45°S) partially fill this interval. The squamates recovered from Cabeza Blanca include both lizards (an indeterminate Iguanidae and a probable Iguaninae) and snakes (Madtsoiidae). If these taxonomic assignments are correct, the presence of an Iguaninae at such a latitude is unexpected because these lizards are presently absent from Argentine territory. The madtsoiid, here referred to Madtsoia, would extend the Cenozoic record of this genus back to around 16?Ma. The squamate fauna from Cabeza Blanca is compatible with warm and humid environments inferred for the Patagonian Deseadan.     

The in-between lives of Japanese immigrants in Las Palmas de Gran Canaria,Spain

Over the past 20 years, the theoretical frameworks of population mobility studies have undergone profound changes. The redefinition of the term diaspora, the rise of transnational analysis, the formulation of the embodied experiences of migration, the increasing interest in migrants' attachment to places, gendered expectations and transcultural processes have coalesced to enrich knowledge. This article explores the culturally mediated experiences of migration and the individual change processes among the members of the Japanese community that from the 1960s onwards settled in the city of Las Palmas de Gran Canaria (Spain), a meeting point for East and West in the Mid-Atlantic. In spite of its small size, this community displays some characteristics that afford new conceptual insights into cultural in-betweenness. Our aim is to contribute to the burgeoning literature on migrants' sense and ways of being and belonging and on their experience of return, within the analytical framework of diaspora and transnationalism. This article makes use of an interpretative approach, and contrasts relevant local news items and biographical interviews with Japanese residents with the narrative texts of three returnees. This contrapuntal focus reveals their ambivalent sense of belonging ‘here and there’, their in-betweenness or their lives in aidagara.     

Grain Markets,Free Trade and the Bourbon Reforms: The Real Pragmática of 1765 in New Spain

The Real Pragmática of 1765 of Free Grain Trade was one of the most influential events in eighteenth century Spanish political and economic history? But was it influential in the Americas? Despite the abundant scholarship on the Bourbon reforms, we do not know much about the application of the Pragmática or more broadly about policies that affected domestic grain trade in the Americas. In this article I argue that the Pragmática was influential in increasing the participation of the viceroy in matters of wholesale and regional grain trade. Such changes in policies as applied in New Spain involved both pragmatism and a centralization of power, rather than a dogmatic support for free trade policies or a staunch support of traditional doctrines. In this I believe that New Spain did not differ from contemporary Western European countries, in which free trade was constantly being negotiated between different actors and authorities of various levels.     

‘Es honor de su nación’: Legal Rhetoric,Ethnic Alliances and the Opening of an Indigenous Convent in Colonial Oaxaca

This article examines the manner in which the caciques (noble Indians) and principales (Indian notables) from the Oaxaca region in New Spain adopted a ‘legal rhetoric’ in their quest to open a convent for noble Indian women during the eighteenth century. Through a close reading of the legal documentation produced in the petition for the convent for indigenous women in Antequera, I find that the caciques strategically used the same laws that had placed them in a subordinated place in the social hierarchy of the colony in order to negotiate certain rights and privileges. Aware of their belonging to the legally determined category of ‘Indians,’ indigenous peoples from the Valley of Oaxaca appealed specifically to the laws that had granted them a special judicial place in the colonial scheme. By referencing the Recopilación de las leyes de las Indias and several royal decrees (cédulas), the caciques appealed to colonial officials at a key historical moment, when Bourbon reforms sought to modernize all institutions, including the Catholic Church.     

‘The labour market under the iron fist of the state’: the Franco dictatorship in the mirror of Hitler,Mussolini and Stalin

This article focuses on the idea that intervention in the labour market through the suspension of labour rights and freedoms, fear and a fall in purchasing power all played a key role in achieving political and economic objectives in the regimes of Mussolini, Hitler and Stalin. However, in each of these cases, the success of this policy was not as had been expected. These European experiences were essential for the configuration of the labour framework in the Franco dictatorship. The iron-fisted control of the labour market came to Spain through legal texts and institutions that were in many cases a blatant copy of those applied in Italy and Germany. In spite of the ideological distance between them, we can also find some common traits with Stalin's labour policies. The results obtained were even worse for Spain, and the negative effects on the economy were more serious, due to the greater longevity of the Spanish dictatorship.