Adding to the prehistoric menagerie at Riversleigh are fossils of the now extinct diprotodontids, ilariids and wynyardiids. One of the most enigmatic finds at Riversleigh has been the fossil remains of a creature so bizarre it was initially dubbed “Thingodonta” by researchers.
How old is Riversleigh fossil?
about 25 million years ago
Riversleigh is a locality that contains hundreds of fossil sites that span an age from about 25 million years ago to about 15 million years ago. There are also some younger sites of around 4 million years of age and a few tens of thousands of years old.
Who discovered Riversleigh?
The fossils are found in limestone rock outcrops near the Gregory River. Since the Australian paleontologist Michael Archer began intensive explorations of the area in 1983, Riversleigh has yielded the remains of more than 200 previously unknown species of vertebrates.
What are the 3 major fossil sites in Queensland?
Fossil sites
- Lightning Ridge and Inverloch. Little is known about the mammals that lived in Australia when dinosaurs ruled the Earth.
- Murgon.
- Riversleigh.
- Alcoota.
- Bluff Downs.
- Naracoorte.
How were the Riversleigh fossils formed?
Many of the fossil sites were crevices and limestone caves created by the action of large amounts of water on the karst formation, creating pitfall traps and feeding spots for predators which periodically and perhaps suddenly became covered and preserved; these conditions are responsible for the large assemblages of …
Where is Riversleigh fossil site located?
The Riversleigh section, which covers 10,000 hectares, is located in the southern section of Boodjamulla National Park in north-west Queensland. Naracoorte can be found over 2,000 kilometres away in South Australia.
Why is Riversleigh a World Heritage Site?
The Australian Fossil Mammal Sites at Riversleigh and Naracoorte were inscribed in the World Heritage List in 1994 for their outstanding representation of the evolution of Australian mammals and the quality of their fossils, which are preserved in limestone.
Where can I dig for fossils in Qld?
The Free Fossil Hunting Sites are located 12 kilometres North of Richmond, Outback Queensland and are accessible to all vehicles via fully sealed roads. The easiest route from Kronosaurus Korner to the Free Fossil Hunting Sites follows Goldring Street (the main street of Richmond) to the North.
Why are there so many fossils at Riversleigh?
Riversleigh was once a lush rainforest filled with lakes and waterways. The high concentration of calcium carbonate in the water has ensured that fossils have been extremely well preserved.
Where can I find fossils in NSW?
Fossils in Wellington Caves, NSW The Wellington Caves are renowned for the diversity of fossils across a long period of time including mainland Thylacines.
How was Riversleigh formed?
Shaped by water In the Riversleigh area, pale-grey limestone, deposited between 25 and 15 million years ago in Tertiary times, lies on top of older, Cambrian limestone. The younger limestone was deposited in small rainforest lakes that flourished in the wetter climate of the time.
Where is the Riversleigh fossil site?
The Riversleigh Fossil Site Some of the animals found at this site Riversleigh is situated in north-western Queensland, about 200 km north of Mt Isa, and a similar distance south of the Gulf of Carpentaria.
When did the Riversleigh faunas first appear?
The site dates from the Late Oligocene to Early Miocene, about 25 million years old. The assemblage here is believed to be the oldest of the Riversleigh local faunas. At this time the Riversleigh area was covered by dense rainforest with a high diversity of animals. The region had regular rainfall and spring-fed lakes.
Additionally, because of its unrivalled richness, the expanse of time covered by its record, and the quality of the fossils it yields, Riversleigh was declared a World Heritage site in 1994. Why is Riversleigh important? Fossil fauna from the Riversleigh site have altered our understanding about Australia’s mid-Cainozoic vertebrate diversity.
What can you find at Riversleigh?
At Riversleigh the evolutionary history of crocodiles, snakes, lizards, turtles, lungfish, frogs, birds, snails, insectsand other invertebrates can be followed to almost the present day. With more than 40 species of bats represented at Riversleigh, it is one of the richest fossil bat sites in the world.
