Wednesday, July 1, 2020

World's largest graveyard of Dinosaurs found in South Africa

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Nikhita Gautam

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World's largest graveyard of Dinosaurs found in South Africa

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Global Views 360

Publication Date

July 1, 2020

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‘African dinosaurs’ exhibit at the Iziko South African Museum in Cape Town

‘African dinosaurs’ exhibit at the Iziko South African Museum in Cape Town | Source: Bruce Anderson via Wikimedia

In a village in the eastern cape of South Africa lies one of the most significant dinosaur sites ever found in the world. The site was discovered when a shepherd, Dumangwe Thyobeka found a large bone on his way to his great-grandparents’ graves, in 2015. He then took the bones to a local dinosaur enthusiast, James Rhalene. Commenting on this discovery " Mr. Rhalene said, "Growing up we were told dinosaurs were a myth, I thought they were only tales our grandparents would tell around the fire at story time", and It wasn't until reading some books that I started to believe they may be real. I've been looking into the existence of dinosaurs since 1982. He added, "You can imagine my excitement at being part of this and discovering them in my own backyard. I am so proud. Books will be written about our small village; the world will come to know of us through this discovery.”

These bones are more than 200 million years old, of around the end of the Triassic era and the beginning of the Jurassic one. When the village elder, Sginyane Ralane came to know about the discovery, he reached out to universities in South Africa for looking into it. The news eventually reached Prof. Jonah Choiniere from the University of Witwatersrand in Johannesburg, and in 2018 Jonah and his colleagues started excavating the site. “It has been one of those places where you sometimes find yourself literally tripping over a dinosaur bone. There are very few other sites I've had the chance to work where we have this richness of fossils.” says Prof Paul Barett, a dinosaur expert at The Natural History Museum, UK, after he joined the team.

A reason why this area is abundant in fossils, Natural History Museum explains, is because of the ancient river systems in the area. The area is arid for most of the year now, and the rivers flow only seasonally. However, in the ancient times, there were vast river systems flowing year-round in the region, with wide, shallow rivers which would consequently form a layer of rock 210 million years old which is up to 500 meters thick in some regions. These rivers supported diverse wildlife, including ancestors of crocodiles, possibly those of turtles and mammals and fish, amphibians and reptile-like animals. The existence of such large rivers meant that dead animals nearby would be buried in sediment before they decomposed.  

This discovery is scientifically important for a number of reasons; the era from which these bones are found is a boundary in which a mass extinction occurred. Prof. Jonah is trying to understand how the animals from before that extinction survived and how they flourished after. In the Triassic era, there were multiple dominating animals, like the crocodiles, big mammal-like animals and dinosaurs. In the Jurassic era, however, the dinosaurs are clearly dominating. Why this happened is unclear, and the rocks and fossils from this site might help with that. There were also other animals along with dinosaurs in this site which make it noteworthy. Of the animals found, there were rauisuchians, which relate to modern-day crocodiles, and were dominant on land during the Triassic. The team also found cyclodonts and dicyclodonts, where the cyclodonts are the early ancestors to all mammals, and dicyclodonts are an even earlier branch of the mammalian family tree.

All of these have a significant impact on the community too; the team signed a memorandum of understanding with the local government with huge. After the signing, local officials visited the site at Qhemega. The team has been trying to use the heavy machinery they had brought for moving fossils for improving access in and to the village. They are also developing a curriculum in high schools to include topics about fossil sites and to add geography to the curriculum, to train the younger generation about the mapping used in excavation and in many other scientific fields especially relevant in the mineral-resource rich South Africa.

So far, this site has only provided benefits for everyone involved; new discoveries and confirming data for the scientific community, and economic access, increased opportunities and a matter for pride for the local community.

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February 4, 2021 4:49 PM

Paradise for wildlife created on a private land in India

Amidst the horror filled reports and anecdotes making it to the news bulletin in 2020, a wonderful story of altruism emerges from Rajasthan, India. Complete lockdowns followed by nations might have brought down our productivity and economy but it gave nature a chance to heal from the torments it faced due to us humans. However, Aditya and Poonam Singh, a couple from Rajasthan lent the environment a helping hand in speeding up the process of bringing biodiversity back to life.

The couple moved to Sawai Madhopur, a city in Rajasthan near Ranthambore Tiger reserve, in 1998. It was his passionate love for nature that made Aditya quit his prestigious Civil services job, give up the comfortable city life of New Delhi and shift to Rajasthan. In fact, his wife, Poonam was the one who suggested they move since both of them fell in love with Ranthambore when they first visited the National Park. “My first sighting was a tigress with three cubs on a hill. It was magical. At the end of the trip, I just asked him if we can move to Ranthambore. He wanted it too and within months we moved” says an ecstatic Poonam Singh.

After moving, they started a tourist resort as a means of earning their daily bread. Gradually, Mr. Aditya started purchasing the barren agricultural fields around Ranthambore Tiger reserve (RTR), an area known as Bhadlav (now Bhadlao). These fields would often be visited by predators like tigers, had no access to good roads or electricity, and were not being used extensively for farming. Due to such dangerous circumstances Mr. Singh got  fields at a cheap price from the owners who wanted to sell and move out.

Mr Singh left these plots of land for a long time to the mercy of nature and they soon grew into plush mini forests with two natural water holes. He also constructed a few artificial water holes for the animals visiting the area during summer heat. “I just bought this and did nothing to it except removing the invasive species. We allowed the land to recover and now after 20 years it has become a lush green patch of forest which is frequently visited by all kinds of animals, including tigers, leopards and wild boars, throughout the year,” says Singh.

These mini forests provide shelter and protection to those sub-adult tigers which are driven towards the edges of Ranthambore Tiger Reserve. Additionally, the couple is also working towards building a homestay for tourists which will be powered by renewable energy sources like solar and wind power. Mr. Singh’s beautiful story of their 40 acres huge sanctuary was shared to the public by The World Economic Forum via twitter and his efforts were highly lauded by millions of people.

The once barren fields which are now lush green forest have seen tremendous growth in commercial value. Mr Singh is regularly approached by suiters for sales or joint development of this area however he has never entertained these proposals. He says..  “Money was never the consideration. It is just about my love for nature and wildlife” Such unselfish acts are indeed rare in today’s times. Aditya and Poonam Singh are indeed a prime example of late Mahatma Gandhi’s saying ‘Be the change you wish to see in the world’.

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