Latest News Archive

Please select Category, Year, and then Month to display items
Previous Archive
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

Goodwill and unity reigns supreme at official opening
2014-02-07

Video
Transcription: Prof Jonathan Jansen speech

The academic year at the UFS was officially opened by Prof Jonathan Jansen, Vice-Chancellor and Rector, at a splendid event with staff at the Bloemfontein Campus. “The UFS is no longer the place it was four years ago. When I arrived here, the place was very much divided. The picture is very different today. Staff and students have come together and are spending time together as friends. A new spirit reigns at the university. People are no longer mad at each other; they talk to each other,” Prof Jansen said.

The reason: students know that they are loved and respected. The people responsible for this – the staff.

Prof Jansen particularly emphasised the capacity of staff members to change and to care. “Change at the UFS is possible because of the positive attitude of staff and students. This creates an atmosphere where students can learn to love and forgive.

“We have reached a new consensus where racism, sexism, xenophobia and homophobia are wrong. We also address this bad behaviour immediately.

“Another highlight at the UFS is the changes in the academy. Debate is deeper and more progressive. We have the best intellectual debates at the UFS. We are also proud of our young researchers in the Prestige Scholars Programme. We are excited, because in five years’ time we will reap the fruits from the efforts of young, as well as older researchers who have worked hard so that we can deliver the best researchers.

“There is another shift in the academic culture on campus with our students increasingly looking academically stronger.

“Besides the capacity of staff to change, they also have a capacity for caring. Projects such as the Staff Fund and the No Student Hungry Programme is doing well, with the NSH Programme raising more than R1 million to feed hungry students,” Prof Jansen said.

At this event, Prof Jansen also gave recognition to the team involved with and working very hard at the Schools Change Project, which is largely responsible for the Free State’s good matric results. With the inspiration of the staff involved with this project, a difference is made to schools in the Free State.

“Our staff members do more than is stipulated in their contracts. Our staff members do their jobs from the heart,” Prof Jansen said.

We use cookies to make interactions with our websites and services easy and meaningful. To better understand how they are used, read more about the UFS cookie policy. By continuing to use this site you are giving us your consent to do this.

Accept