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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 launches history book
2007-02-02

 

Attending the launch of the UFS history book were, from the left: Prof Stef Coetzee, Prof Francois Retief, Prof Wynand Mouton, Mr Pieter Cox (Chairperson on Sasol) and Prof Frederick Fourie (Rector and Vice-Chancellor of the UFS). Profs Coetzee, Retief and Mouton are former rectors of the UFS.
UFS launches history book
 
The University of the Free State (UFS) today launched its history book titled, From Grey to Gold, on the Main Campus in Bloemfontein.
 
“The history of the UFS is one of faith, hope, struggle and determination. The book tells a fascinating story that stretches over a 100 years. It is divided into five main phases, which tells about the growth of the UFS from a poor Free State community to a mature university. Interesting stories about student days, sport, rag and hostel activities are included in each phase,” Prof Frederick Fourie, Rector and Vice-Chancellor said during the launch of the book.
 
“One cannot know where you are going if you don’t know where you are coming from. You have a clearer idea of the issues facing an institution if you know the history. A book like this one is also an important source of reference for staff on the campus,” said Prof Fourie.
 
The first research for the book was done from 1999-2003 by Prof Leo Barnard from the Department of History and a team of researchers. They also compiled the first manuscript. 
 
During the last three years, Prof Fourie was closely involved with the writing of the final phase and finishing off the history book project. “It was an honour to be so closely involved with the story of the UFS because now I have a better understanding of the institution, its people, its culture and its way of thinking. For any rector of a university, such an understanding of its institution is a requirement,” Prof Fourie said.
 
The book is partly sponsored by Sasol. During the launch of the book, Mr Pieter Cox, Chairperson of Sasol said the company and the UFS have been partners for 57 years. “Both Sasol and the UFS are striving for excellence – Sasol for excellence in technology and the UFS for excellence in education,” said Mr Cox. 
 
“It was an easy decision when the UFS approached Sasol for financial support of the history book. Its a formidable piece of work, something Prof Fourie and the UFS can be proud of,” said Mr Cox.
 
The book consists of more than 500 pages with hundreds of photos and a wide range of supplements of office-bearers, awards and achievements (including national and sporting colours). A timeline framework, putting the history of the UFS in context with the history of the Free State, South Africa and of the world, is also included.
 
Besides the supplements, the history book also tells the story of amongst others the establishment of the UFS; the role of its founding fathers; black pioneers of transformation; the establishment and development of academic departments and faculties; student numbers; pioneers and trends in research; academic entrepreneurs; campus issues and campus politics; interesting facts and stories about student life (rag, intervarsity and cheerleaders, sport and the Springboks, hostel traditions); the admission of black students and anguish about race; language and culture; the development of the Main Campus; the Tickey and the Banana and much more.
 
Emphasis is placed on a very high level of quality. “It is not every day that the university becomes hundred years old and the institution will be measured by the quality of the book. We cannot say the UFS is a university of excellence if the book does not reflect that,” Ms Edma Pelzer, Director: Physical Resources and Special Projects said. Ms Pelzer managed the project as part of the last mentioned part of her portfolio.
 
The search for photographs was an important aspect of the book and it was a big task to find photographs and write captions. It took almost a year to translate and prepare the English edition and almost ten months to ensure the accuracy thereof, especially to correctly translate the typical Free State and UFS terminology and naturally to complete the English manuscript’s layout and proofreading. In the mean time the cover pages were designed and in September 2006 the manuscript went into the final print process. The Afrikaans title is: Van Sink tot Sandsteen tot Graniet.  
 
The cost of the book is R380 per copy. Those who already ordered the book will soon receive their copy. Orders can be placed by contacting Mr Dawid Kriel at UFS Marketing on 051 401 3409 or on the UFS web site at www.ufs.ac.za. The book is also available at Van Schaik Book Store on the Thakaneng Bridge, UFS Main Campus and at Fascination Books in Mimosa Mall, Bloemfontein.
 
Media release
Issued by: Lacea Loader
Media Representative
Tel: (051) 401-2584
Cell: 083 645 2454
2 February 2007

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