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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

Kovsies proud of a gold PRISM Award for safety campaign
2015-05-05

Stefan Lotter, Leonie Bolleurs and Lacea Loader. All three are from the Departement of Communication and Brand Management at the UFS.
Photo: Hannes Pieterse

The University of the Free State, takes pride in the gold PRISM Award (from the Public Relations Institute of Southern Africa) for the B Safe Take Action safety campaign that has been rolled out on the campus since 2013 by the Department of Communication and Brand Management.

The campaign earned the Von H Brand Provocateur gold award in the internal communication category.

“The UFS is the only tertiary institution to receive a gold award. The award is a great honour for the department, considering the cream of South African public relations took part in the competition, and the standard was naturally very high. It was also a feather in the cap for us that the uniqueness of the campaign received national recognition from our peers in this manner, said Ms Lacea Loader, Director: Communication and Brand Management at the UFS.

The university is responsible for about 32 000 students and 4 000 members of staff on its three campuses: the Bloemfontein and South Campuses in Bloemfontein and the Qwaqwa Campus in the Eastern Free State. It is of cardinal importance for the university that its students, staff, and assets are safe.

Apart from safety measures that have been implemented by the UFS Protection Services, the B Safe Take Action campaign has also been rolled out on the three campuses of the UFS. The campaign supports the safety strategy of the university. It is aimed at developing a culture of safety awareness in students and staff alike. The purpose of the campaign is for staff and students to take ownership of their own safety. In addition, it creates awareness of the safety measures that are in place at the UFS.

The campaign has been rolled out on various communication platforms. These include placards, pamphlets, lamp-post advertisements, an advertisement board, emails, and messages on student communication portals such as Blackboard, the UFS web and intranet, social media, information boards in the campus parking areas and on the pedestrian walkways as well as messages on refuse bins around the campus. “The fact that a variety of communication platforms has been deployed, the striking design and character of the messages, and the number of target audiences that have been reached further contributed to the success of the campaign,” said Ms Loader,

The campaign also received a merit award from the International Association for Business Communication (IABC). The award will be presented on 15 June 2015 in San Francisco, USA.

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