A reappraisal of Neocalamites and Schizoneura (fossil Equisetales) based on material from the Triassic of East Antarctica

Sphenophytes are a common floral element in the Triassic of Gondwana. Most sphenophyte compression fossils have been conventionally assigned to a few, presumably very widespread species of Neocalamites based on vegetative features of the stems (or pith casts) and the foliage. During recent decades, however, new reports on morphological and anatomical details of some of these fossils have cast doubt on the systematic affinities of many Gondwanan Triassic sphenophytes. Here we describe Neocalamites suberosus (Artabe & Zamuner) nov. comb. et emend. and Schizoneura africana Feistmantel emend. from several Triassic deposits in the central Transantarctic Mountains and Victoria Land, East Antarctica. The material enables a critical reevaluation of morphological and anatomical features that have been historically used to define the two genera, including leaf-base morphology, degree of leaf fusion, stem vasculature and vallecular canals, and features of the nodal diaphragm. The diagnoses of Neocalamites and Schizoneura are emended so that they more accurately reflect recent advances in our understanding of the anatomy and ontogeny of these plants.

[Benjamin Bomfleur [bbomfleur@ku]edu], Rudolph Serbet [serbet@ku.edu], Edith L. Taylor [etaylor@ku.edu] and Thomas N. Taylor [tntaylor@ku.edu], Department of Ecology and Evolutionary Biology, and Biodiversity Institute, University of Kansas, Lawrence, KS 66045, USA; Ignacio H. Escapa [iescapa@mef.org.ar], CONICET—Museo Paleontológico Egidio Feruglio, Trelew, Chubut 9100, Argentina. Received 4.7.2012; revised 22.12.2012; accepted 7.1.2013.

Bomfleur, B., Escapa, I.H., Serbet, R., Taylor, E.L. & Taylor, T.N., 2013. A reappraisal of Neocalamites and Schizoneura (fossil Equisetales) based on material from the Triassic of East Antarctica. Alcheringa 37, 1–17. ISSN 0311-5518.     

Fleshing out the geographies of social movements: Colombia's Pacific coast black communities and the ‘aquatic space’

The intersections between the concepts of space, place and resistance have recently received increasing attention from geographers dedicated to the study of social movements. Space and place are not merely seen as providing a physical background for mobilisations but as mutually constitutive of social movement agency. Yet, critics of theoretical frameworks drawn up by geographers have often rightly pointed to the lack of convincing empirical evidence presented in their support.This paper addresses these critiques by offering a theoretically informed and empirically grounded account of recent mobilisations by the social movement of black communities in the Pacific coast region of Colombia. Drawing on both the objective aspects of place and the subjective feelings that are derived from living in a place, I will show how these mechanisms have impacted on the specific spatial organising forms adopted by black communities. In particular, I will propose the concept of ‘aquatic space’ as a set of spatialised social relationships among Afro-Colombians, and show how these concrete everyday geographies have been drawn upon by black communities in the establishment of community councils along river basins.The paper argues that to make a strong point for more spatially sensitive analyses of social movements, geographers have to sustain their theoretical frameworks with concrete empirical data that not only illustrate spatial processes at play, but also convincingly demonstrate their very embeddedness in social practice. I thus argue for a strong consideration of ethnographies as a privileged research methodology to flesh out the geographies of social movements.     

Strukturwandel der Wissenschaft im Nationalsozialismus

National Socialism brought about profound changes for the German academic system. Forced emigration not just sent outstanding scholars into exile, thus closing down promising research venues. In fact, it changed the entire climate of scientific inquiry by removing intellectual outsiders from the scene, whose absence usually precludes any success of innovative research. In most disciplines this led to a dominance of just a few academic ‘schools’ and paradigms, which severely harmed intra‐discipline accountability and innovation. The academic bureaucracy worked more effectively than has been assumed for a long time: practice‐oriented research enjoyed massive state support, and huge research projects outside the universities flourished. At the same time the National Socialists looked ambivalently at the universities themselves. They savored the legitimizing functions of the arts and sciences, and yet they distrusted the professors as exponents of the bourgeois world of old. Contrary to the blooming sciences such as biology, chemistry, and physics, the arts and humanities had a hard time demonstrating their practical applicability. In order to prove their worth by means of giving advice to the political sphere, they formed interdisciplinary combines, which were massively funded by the ‘Deutsche Forschungsgemeinschaft’. The ‘Deutsche Wissenschaft’, which has been incorrectly marginalized in numerous accounts, served in part to provide a Weltanschauung justification for these networks. While the German academic community in 1945 tried to pick up the threads of the a‐political self‐ understanding of the 1920s, in fact there were numerous continuities to academic life before and after 1945. Among them were the encompassing loss of international contacts, the strengthening of hierarchical structures, and the importance of feasibility criteria for the culture of innovation. The arts and humanities (Geisteswissenschaften) could not regain the lost territory of significance, which they had suffered during the Third Reich. It is mainly their development which showed an amazing persistence of national socialist patterns of view and of concepts of the enemy, which in turn as late as 1968 inspired in part the anti‐bourgeois thrust of the critique of the academic world.