All about dinosaurs, fossils and prehistoric animals by Everything Dinosaur team members.
16 06, 2017

Australovenator Steps into Lark Quarry Dinosaur Debate

By | June 16th, 2017|Dinosaur and Prehistoric Animal News Stories, Dinosaur Fans, Main Page|0 Comments

Scientists Reconstruct Dinosaur Foot to Help Interpret Tracksite

The famous dinosaur tracks at Lark Quarry, (Dinosaur Stampede National Monument), near the town of Winton (Queensland, Australia),  have been the subject of research for decades.  Unlike dinosaur bones and teeth that can be transported a huge distance from the place where the dinosaur died, footprints and tracks preserve evidence of activity and behaviour.  The majority of trace fossils provide direct, in situ evidence of the environment at the time and location where the animal was living.

Lark Quarry Dinosaur Tracks

Lark Quarry Dinosaur Tracks

Examples of Lark Quarry dinosaur footprints.

Picture Credit: Dr Steve Salisbury

Different Interpretations of the Dinosaur Tracks

At Everything Dinosaur, we think the first, formal attempt to interpret the numerous dinosaur tracks preserved in the finely grained sandstone at the Lark Quarry site took place in 1984.  Eleven, large, three-toed prints were interpreted as having been made by a big meat-eating dinosaur that had lunged at a flock of small Ornithopods that it had cornered.  The tracks were interpreted as a “dinosaur stampede” as the smaller plant-eating dinosaurs panicked and tried to avoid the jaws of a ten-metre-long Theropod.  The ichno genus (a name given to an animal known only from trace fossils), Tyrannosauropus was erected.  Over the years, a number of other interpretations have been put forward, including the hypothesis that the big tri-dactyl prints don’t represent a predator but were made by a large Ornithopod, something akin to a Muttaburrasaurus.  Other interpretations of this famous fossil site include that the tracks were made by dinosaurs as they swam and waded across a body of water.

Swimming Dinosaurs Hypothesis: Dinosaurs Not Stampeding but Swimming

No Tyrannosauropus at Lark Quarry After All: Lark Quarry Tracks Made by a Big Plant-Eating Dinosaur

Dinosaur Foot Reconstruction – A New Analysis of the Tracks

Distinguishing between the three-toed prints of meat-eating dinosaurs and those of similar sized plant-eaters, which also walked on three toes is a tricky business.  However, in an innovative piece of research, a team of scientists from from the University of Newcastle (New South Wales) and the Australian Age of Dinosaurs Museum of Natural History in Winton, set about reconstructing the foot of an Australian Theropod dinosaur Australovenator wintonensis in a bid to reproduce the tracks in similar sediment, which could then be compared to the fossil trackway.

Reconstructing the Foot of Australovenator

Foot model helping to interpret Lark Quarry tracks.

Reconstructing the left foot of Australovenator.

Picture Credit: PeerJ

The picture above shows (A) calculating the claw length of Australovenator and (B-D) the four claws associated with the left foot of the dinosaur with reconstructed sheaths.  The bones of the foot have been reconstructed (F) and using Emu feet for an anatomical comparison, (G) shows the foot reconstructed with tendons added, whilst (H) is the skin covered biologically restored foot (left pes) of Australovenator.

Australovenator wintonensis

A three-dimensional foot of Australovenator was created as fossils of this Megaraptoran Theropod are known from similar aged strata as the Lark Quarry tracks.  In addition, Australovenator is the only meat-eating dinosaur from Australia which has had its foot bones discovered.  The researchers used a variety of substrates to test the prints, scuff marks and scratches made by the large dinosaur and they concluded that their recreated impressions were reminiscent of the trace fossils.  This suggests that the eleven, large, three-toed tracks at Lake Quarry (now known as the Dinosaur Stampede National Monument), could have been made by an Australovenator-like carnivorous dinosaur.

An Illustration of Australovenator wintonensis Crossing the Lark Quarry Sediments

Australovenator footprint study.

Australovenator making tracks.

Picture Credit: Travis R. Tischler

The CollectA Australovenator Dinosaur Model

Australovenator was a member of the Allosauria clade of Theropod dinosaurs.  Fossils of this six-metre-long carnivore were discovered in 2006.  Although the fossil material was far from complete, the Australovenator genus was formally erected by Australian palaeontologist Scott Hucknull in 2009.  CollectA introduced a model of Australovenator just three years after the scientific description.  Models of Megaraptoran Theropods are quite rare, it is great to see that CollectA have added an Australovenator replica to their “Prehistoric Life” model range.

The CollectA Australovenator Dinosaur Model

The CollectA Australovenator dinosaur model.

The CollectA Australovenator replica.

Picture Credit: Everything Dinosaur

To view the full range of CollectA dinosaur and prehistoric animal models: CollectA Prehistoric Life Models

16 06, 2017

From Dinosaurs to the Stone Age

By | June 16th, 2017|Key Stage 1/2|Comments Off on From Dinosaurs to the Stone Age

Year 3 and Year 4 Explore Fossils

Children in Lower Key Stage 2 at The Acorns Primary and Nursery School have been enjoying learning about the Stone Age and prehistoric life.  Under the enthusiastic tutelage of the teaching team, the three classes that make up Lower Key Stage 2 cohort have been developing their writing skills as well as investigating how fossils form and researching Mary Anning.  We hope that the tongue twister “she sells sea shells on the sea shore” will help to inspire the children with their creative writing.

Examples of Cursive Handwriting Form Part of the Stone Age Display

Children learn about Stone Age Life

Life in the Stone Age – examples of cursive writing.

Picture Credit: The Acorns Primary and Nursery School

A Broad and Balanced Scheme of Work

The pupils were set lots of exciting challenges during our dinosaur and fossil themed workshops.  Our dinosaur expert ensured that the activities that were proposed fitted in with the learning objectives set by the teachers.  For example, looking at Woolly Mammoth fossils led onto introducing the idea of the class producing a piece of fiction writing imagining what it would have been like to go on a Woolly Mammoth hunt.  One young girl proposed writing her story based on the viewpoint of the Mammoth – what a super idea!

With such an interesting topic, there is plenty of scope to introduce cross-curricular activities.  Class 4ML have been looking at life in the rainforest and threats to existing habitats, the opportunity to learn more about extinction events and climate change certainly resonated with the young audience.  We asked the Year 4 children to undertake independent research on the bizarre Coelacanth, a fish thought to have died out with the dinosaurs but now sadly, seriously threatened due to loss of habitat and the encroachment of human activity.  The children loved the idea of learning about a fish that was the same colour as their school jumpers.

The Story of the Coelacanth – Helping to Link Topic Areas

Coelacanth replica.

A replica of a Coelacanth.

Picture Credit: Everything Dinosaur

Making Fossils

Several very impressive plaster casts of fossils were prominently displayed.  The children were keen to demonstrate their understanding by explaining what fossils are and how they form.  The replica fossils included some amazing bivalves and snail shells.  During the workshop, the children got the chance to handle real fossils including some “gigantic”, “enormous” ammonites.  The ammonite shells reminded the children of snail shells, our fossil expert explained that snails and ammonites are distantly related and in a practical fish catching exercise, illustrated why ammonites, squid and octopi are classified as cephalopods.

Lots of Carefully Crafted Plaster Cast Fossils on Display

Replica fossils created by the children.

Lots of replica fossils on display.

Picture Credit: The Acorns Primary and Nursery School

Once back in the office, we were able to email over some more resources to help the teaching team.

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