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 4:44 PM

Are Black Americans victims of Police Militarization in the US

In the USA, there are reports of police using tear gas, flashbangs, and many other weapons to fight against the riots which are occurring now in over 350 cities against police brutality against the Black Community. There have been many reports on how the police brutality is disproportionate in terms of race; the Black people are thrice as likely to have violence committed on them by the police force than the whites, and the factor is 1.5 for the Hispanics. There is a first-hand account of a person present in the recent protests who talks about the use of batons on demonstrators.

This, however, leads to the question whether it was the militarization of the police force that caused violence towards minority communities. The police militarization was, in the aftermath of the 9/11 US terrorist attack, justified by the policymakers as a necessary tool to prevent the terrorist attacks in the future. This policy decision led to the military grade weapons and military style training regime for the police force. Some of the states in the US partnered with highly militarized police of Israel for training their police force. Such lethal weapons which were provided to the police force  used against terrorists were gradually used by the police force against common civilians on suspicion of minor crimes and the group of protestors.

The civil right groups were voicing concerns for many years about the use of disproportionate force on the Black and Hispanic Americans, which they blamed on the arming of police with lethal weapons. It was the death of Michael Brown, an unarmed black teenager, who was shot and killed on Aug. 9, 2014, by Darren Wilson, a white police officer, in Ferguson, Montana, USA that galvanised the public to demand for demilitarization of police force. As a response to public anger against the killing of Michael Brown, President Obama set up a Task Force on 21st Century Policing. This task force, in its report put special emphasis on de-escalating situations, with civilians in training and policies, and reduced funding by the Department of Homeland Security for such weapons. However these recommendations failed to have much effect on solving the issues at hand.

The continued use of such lethal weapons casts the police force as a separate, powerful entity which is to be feared, instead of a friendly cop who is trying to provide security to a citizen in distress. Such equipment serves to distance the police from the people, giving them power, and if left unchecked, entitlement over the rest of the citizens. In many instances the presence of a weapon itself leads to more aggressive behaviour and there have been calls to make the police wear body cams to restrain them from acting with disproportionate lethal force.

The racial profiling and discriminatory actions against the black and other communities that was already practiced by the police forces was now being enforced by more lethal power in the force’s hands. A study by Olugbenga Ajilore shows that counties with more race segregation were more likely to request additional weapons, and counties with an African American/Asian American population are more likely to acquire military equipment. Another report of 2017 shows a direct correlation between the degree of police militarization and the killing of civilians in police action.

It can be reasonably said that the militarization, in some sense, inflated the already existing racial profiling based violent actions of police force.

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