Who discovered the oldest human footprints dating back 117 000 early pregnancy dating ultrasound


29-Feb-2020 00:09

This fossil, approximately 195-million years old and estimated to be seven metres long, has helped scientists to learn more about how early dinosaurs walked.According to Dr Adam Yates, the primary investigator and a palaeontologist at the BPI, this particular species is important as it was close to the common ancestor of the gigantic sauropod dinosaurs.The discovery of the clutch of eggs, which made international headlines, revealed important clues about the evolution of complex reproductive behaviour in early dinosaurs.Speaking about this discovery in an earlier news report David Evans, curator of Vertebrate Palaeontology at the Royal Ontario Museum, said even though the fossil record of dinosaurs is extensive, there is very little information about their reproductive biology, particularly for early dinosaurs.What scientists saw in their study of these fossils is that over time our primitive reptilian ancestors gradually acquired more mammal-like features."This means we can trace the entire evolutionary development of mammals," he explains.South Africa has one of the richest fossil records and collections in the world and the industry could create many jobs.Sites to include on the route include the Cradle of Humankind, where the 2.3-million year-old fossil Australopithecus africanus, known as Mrs Ples, was found in 1947; Nieu-Bethesda's Kitching Fossil Exploration Centre, famous for its early dinosaur and reptile discoveries; Golden Gate, the site of the oldest fossilised dinosaur eggs in the world, and Langebaan on the West Coast, where fossilised human footprints dating back 117 000 years were found, the oldest known footprints of an anatomically-modern human.

The fossils found in Karoo rock add to the country's already extraordinary fossil record.

Rubidge explains that about 300-million years ago, when terrestrial ecosystems started to develop, the only animals with backbones were fish and amphibians.

The Karoo region records a long period of geological ancestry of three groups of reptiles that gave rise to tortoises, dinosaurs, lizards, snakes and small mammals.

Sauropods, also known as brontosaurs, were the largest backboned animals to walk on land with their long necks, tree-trunk legs and whip-like tails.

who discovered the oldest human footprints dating back 117 000-23

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Aardonyx probably walked on its hind legs, but could also drop onto all fours.The showpiece of the collection is the 195-million-year-old clutch of dinosaur eggs - the oldest fossilised dinosaur eggs in the world, discovered in a cliff at the Golden Gate Highlands National Park in the Free State province.