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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 in forefront with ASGI-SA initiative
2006-05-10

At the conceptualisation colloquium and stakeholder dialogue were from the left Dr Aldo Stroebel (senior researcher at the UFS Research Development Directorate), Dr Edith Vries (acting Chief Executive Officer of the Independent Development Trust) and Prof Frans Swanepoel (Director: UFS Research Development Directorate).

UFS in forefront with ASGI-SA initiative

Two staff members of the University of the Free State (UFS) have been appointed as members of the advisory board of the national programme for the creation of small enterprises and jobs in the second economy.  This programme forms part of government’s Accelerated and Shared Growth Initiative of South Africa (ASGI-SA).

Prof Frans Swanepoel, Director of the UFS Research Development Directorate and Dr Aldo Stroebel, senior researcher at the UFS Research Development Directorate, are working with a team of experts from the UFS on a draft implementation strategy for the national programme.  Both Prof Swanepoel and Dr Stroebel are also associated to the UFS Centre for Sustainable Agriculture.
 
“The strategy is being developed in collaboration with institutions like the Independent Development Trust, the Department of Agriculture, the National Development Agency and the Department of Trade and Industry,” says Prof  Swanepoel.  

The other team members of the UFS are Prof Basie Wessels, Director of the  Mangaung-University Community Partnership Programme (MUCPP) and Mr  Benedict Mokoena, project manager at the MUCPP.

Dr Stroebel was also member of the organising committee of a conceptualisation colloquium and stakeholder dialogue that was recently presented in Johannesburg.  The conference was attended by more than 400 delegates from government departments, higher-education institutions and civil society, including Dr Kobus Laubscher, member of the UFS Council.

The conference was facilitated by Ms Vuyo Mahlati, previously from the WK Kellogg Foundation’s Africa programme and opened by Ms Thoko Didiza, Minister of Agriculture and Land Affairs.   

“The colloquium formed the basis of an induction workshop during which a group of 150 individuals (50 teams of three) from all nine provinces, identified to initiate the implementation of the national programme, was trained and orientated towards an induction manual in collaboration with Hand-in-Hand, an Indian counterpart,” says Prof Swanepoel.

Dr Stroebel and Mr Benedict Mokoena formed part of the team to conceptualise and finalise this training manual.  The induction training includes a case study of a successful community self-help partnership model, namely the MUCPP at the UFS. Prof Wessels and Mr Mokoena are both playing a leading role in the further development of subsequent training initiatives throughout South Africa, in partnership with the relevant provincial departments.

“The involvement of the UFS in the programme is a compliment to us.  It reflects the value government sees in the use of academics and experts in the management of the ASGI-SA initiative.  It is also an indication of one of the aims of the UFS to play a role in South Africa and Africa and in the transformation and change that is taking place in our country,” says Prof Swanepoel.  

Media release
Issued by: Lacea Loader
Media Representative
Tel:   (051) 401-2584
Cell:  083 645 2454
E-mail:  loaderl.stg@mail.uovs.ac.za
10 May 2006

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