Thursday , May 19 2022

New dinosor of wallaby has identified fossils found along the Victorian coast – Science News


The fossil jawbones found in the Victoria & Gippsland coast as those belonging to a new species of plant eating dinosaurs have been identified how many wallaby would have roamed the land between Australia and Antarctica.

Key points

  • Galleonosaurus dorisae was identified from an analysis of the 125-year-old corner bite
  • Here is the first new dinosaur named in the Gippsland area for 20 years
  • Fossils help dinosaur diversity in southern Australia and where they fit into the global picture

Galleonosaurus dorisae is the only dinosaur of its type of 125-year-old rock platforms to the southeast of Melbourne – and the fifth of & # 39; r Victorian coast.

Millions of years ago, this area was a shadowy woody valley with a 4,000 km east east volcano pennant, says paleonton Matthew Herne of the University of New England.

"It's a lost world. None of these are now visible, except fossils, and we can only access these fossils on along the southern coast of Victoria, "said Dr Herne.

Dr Herne and colleagues have spent the past 10 years carefully to analyze fossils collected from the Flat Rocks area near Inverloch by balconists and other volunteers from the Dinosaur Dreaming team.

A fossil analysis, published in the Journal of Palaeontology, shows that Galleonosaurus belongs to a large group of herbs that are known as ornaments – or dinosaurs.

As the name suggests, these dinosaurs have gates that are similar to modern birds, although both groups are not directly related.

"We know that it would have been dinosaurs of eating two-legged, quite beautiful plants," said Dr Herne.

During the Cretaceous Period there were several species of small dinosaurs living around the lakes of large lakes and rivers in the area.

"Galleonosaurus seems closer to as many as possible as many as four or five other species that look very similar and similar sizes," said Dr Herne.

"But we can say that they are different from the anatomy of the enemies and the teeth."

The team used 3D micro-CT scanning techniques to analyze tooths, and five corners of different sizes, ranging from 60-40 millimeters in length, and tooth.

"Micro CT allows us to peer inside the actual gadget and look at the structures internally," said Dr Herne.

Different sizes show that the dinosaurs are at different stages of development.

The jawbones were different from those of Qantassaurus intrepidus – the only small dinosaur that consumes other plants of this type of Gippsland area identified 20 years ago.

"Qantassaurus seems to have a much more entertaining and stylish chin. Galleonosaurus … seems to have fierce features."

"This type of suggestion suggests that we have different nuisances that may potentially feed on different types of plant materials and may have lived in different parts of the environment."

The newly described dinosaur is also about 12 million years older than fossils of other herbal water Pickuvian Diluvicursor, found in the 113-million-old rocks along the coast of the Otway region to the southwest of Melbourne .

"The interesting thing about that whole coastline is that it gives us an age range over a fairly long period," said Dr Herne.

Bring the story of Australian dinosaurs

The story of the history of Australian dinosaurs has been challenging, says paleontologist at Queensland University, Steve Salisbury, who was not directly involved in this study.

"One of the problems was that there were many fossils of these Victorian dinosaur types on both sides of the coast since the late 80's, but almost every fossil discovered, a bar of two specimens, insulating pieces and pieces, "said Dr Salisbury.

He said the discovery was a major step in understanding the diversity of dinosaur dinosaurs in southern Australia.

"Within those two areas, we can have two different bundles that are separated by time," said Dr Salisbury.

It can also help scientists understand where Australian dinosaurs are in line with the global picture.

Australia, Antarctica and South America once again joined a supercontinent of the name Gondwana, which broke apart over time.

When Galleonosaurus wandered the land, Antarctica and Australia were still joining each other and connected to New Zealand through a huge volcanic ridge to the east.

"We should see the same types of dinosaurs roaming across Australia, Antarctica and South America, but although that is what we should see we have not necessarily been able to show off the fossils," said Dr Salisbury.

"And we're just starting to do that with this work that has just been published."

The discovery could not have been possible without the Dinosaur Dreaming Team, he added.

"Each year there is a dedicated volunteer team that goes down there and they capture pieces of rock and split into small pieces that look for all these pieces and without this has finished. "

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