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26 April 2018 Photo Supplied
Pretzel-formed fossil of great evolutionary interest
Slab with holotype of Parapsammichnites pretzelifornic from the Urusis Formation, Namibia. Scale bar is 1cm.Picture was taken from Buatois et al., 2018.
The acclaimed scientific journal, Nature, recently published an article about a trace fossil in approximately 543-million-year-old rocks, which elucidates the evolution of the first animals that appeared on Earth and lived in the sea.  

Affiliated Professor in the Department of Geology at the University of the Free State (UFS) Prof Gerard Germs formed part of a team that conducted research with the aim of understanding how the evolution of the first multicellular animals came about and how the Cambrian explosion took place. Prof Germs is of great value to the team for his extended field geological knowledge.

An article which he co-authored was published in the Nature Scientific Reports. The title of the article is: “Sediment disturbance by Ediacaran bulldozers and the roots of the Cambrian explosion”. The international group of writers included authors from Canada, Spain and South Africa. 

Occurrence of the Cambrian explosion
Prof Germs explains the Cambrian explosion: “During the long (4.5-billion-year) history of the Earth, the first life originated and subsequently evolution of plants and animals took place from one-cellular organisms to multicellular vertebrate animals and seed plants. Approximately 573 million years ago the first multicellular animals appeared on the scene. Sometime afterwards, approximately 540 million years ago, a kind of explosion in the origin of many new animal species occurred. This explosion is known as the Cambrian explosion.”

The team studied Earth sediments which are somewhat older than the Cambrian explosion. Such sediments are approximately 573 to 541 million years old and form part of the Ediacaran (late Neoproterozoic) period.

“My discoveries of the past, of among others, the oldest animal with a carbonate skeleton (Cloudina) and of complex horizontal Cambrian-type “worm” tracks (treptichnids) in Ediacaran sediments of Namibia have demonstrated that the Cambrian explosion occurred more gradually than previously thought. This has recently been confirmed in the article that was published in the Nature Scientific Reports.”

Pretzeliformis bulldoze to search for food
According to the article there is evidence that   during the Ediacaran period   worm-like animals such as the Parasammichnites pretzeliformis were already so far developed that they, due to coelom development and size increase, for the first time in the history of the Earth, were able to disturb and bulldoze sediments.  In this way they were able to find a new food source in sea sediments. Bulldozing animals were previously thought to have originated only during and after the Cambrian explosion and not during the older Ediacaran.

“Another major aim of my cooperative research is to improve our knowledge of the geology of the Ediacaran to early Cambrian of South Africa and Namibia. We also intend to establish how the assembly of the supercontinent Gondwana took place. This improved knowledge can be of great future economic interest since large oil, gas and limestone sources occur in Ediacaran-age sediments outside South Africa”.

News Archive

UFS hosts first ACS Institute held on African soil
2015-12-08



The first ever Association for Cultural Studies (ACS) Institute hosted on the African continent is taking place on the Bloemfontein Campus. At the event are, from the left: Prof Jonathan Jansen, Vice-Chancellor and Rector of the UFS; Prof Jean Comaroff, Alfred North Whitehead Professor of African and African-American Studies and Anthropology at Harvard University; Prof Helene Strauss, Chair of the Department of English at the UFS; and Prof Gil Rodman, Chair of the Association for Cultural Studies and Professor of Communication Studies at the University of Minnesota.
Photo: Johan Roux

The University of the Free State (UFS) is hosting the 2015 conference of the Association for Cultural Studies (ACS) Institute – the first time for this international event to take place on the African continent.

From 7 – 12 December 2015, some of the world’s leading scholars in cultural studies are taking part in the conference on the Bloemfontein Campus. The event has been organised by the UFS Department of English in collaboration with colleagues from other departments in the Faculty of the Humanities.

 The ACS is the foremost international association for scholars in cultural studies, and has been hosting the biennial Crossroads in Cultural Studies Conference since 2006. In 2011, the ACS held its inaugural institute at the University of Ghent (Belgium), followed, in 2013, by one at the Alpen-Adria University Klagenfurt (Austria). As the 2015 meeting of the institute is the first to be held in Africa, the organisers aim at highlighting the contributions that scholars from our continent and other (post)colonial contexts have made to cultural studies, even as it engaged many of the long-standing theoretical concerns generated for the field by scholars from the Global North.

Themed ‘Precarious Futures’, the conference explores how cultural studies might assist in charting more equitable futures by reflecting critically on the cultural, economic, and political trajectories within which precariousness – a state increasingly anticipated for the planet – might be altered. Experts in a diversity of disciplines are sharing their perspectives in the form of seminars and lectures.

Keynote lectures are delivered by Prof Jean Comaroff (Harvard University), Prof John Erni (Hong Kong Baptist University), Dr Jo Littler (City University London), Dr Zethu Matebeni (University of Cape Town), and Prof Handel Kashope Wright (University of British Columbia).

In her opening lecture on Monday 7 December 2015, Prof Comaroff addressed the challenging relationship of law, detection, and sovereignty in contemporary African polities within the South African post-apartheid context.

Topics discussed include climate change; the archives of everyday life; cross-racial intimacies; ethnography; meritocracy; cultural studies and human rights; China and globalisation; gender, sexuality, and race; and governance, embodiment and the work of care.

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