Though not a museum I thought I would talk about my most
recent natural history experience, a visit to the world famous Devonian/Silurian
site at Yea, Victoria.
Recently the National Dinosaur Museum has completed its
‘Dinosaurs Down Under’ road show. Having won a grant to participate in
Australia’s National Science Week, the NDM was to visit 10 rural locations in
NSW and Victoria, set up an exhibit at each location and have an international
speaker (in this case the Berlin based, Hungarian palaeontologist, Dr Marton
Rabbi) give a lecture or two to the townsfolk, before packing up and moving on.
Dr Rabbi's talk at Shepparton, Victoria. |
Over a two week period our little road show visited
Cootamundra, West Wyalong, Griffith (where I was born), Hay, Deniliquin,
Echuca, Shepparton, Wangaratta, Lakes Entrance and Eden. At Wangaratta it
became clear that the truck we had could not make the 4 hour drive over the
Great Alpine Road (as it was winter and snowing) so I had to drive the long way
round. This trip, almost all the way down to Melbourne, had the bonus of
passing near Yea.
The township was first surveyed in 1855 and was named
after Colonel Lacy Walter Yea, a British officer killed in the Crimean War.
Fossils of strange looking plants were discovered there in 1875, but the
importance of these fossils was not recognised until just before the Second
World War (1935) when Isabel Clifton Cookson- an Australian Palaeobotanist-
first described the species.
At the time they were thought to be as old as the Silurian, though it’s now recognised the original site only dates back to the Devonian. Other sites have been found nearby that do indeed date back to the first date, meaning the Yea fossils are still of great historical importance.
One of the best specimens on display at the National Dinosaur Museum in Canberra |
At the time they were thought to be as old as the Silurian, though it’s now recognised the original site only dates back to the Devonian. Other sites have been found nearby that do indeed date back to the first date, meaning the Yea fossils are still of great historical importance.
So what are these fossils and why was I so keen to get
there? Well, amongst a few other things are amazing specimens of Baragwanathia, considered the world’s
oldest vascular (leafy) plant. Though the species has since been found in
Canada and China, the Yea specimens are by far the best and most numerous. They
are considered lycopods, a group that has over 1,000 living species today (such
as club mosses and quillworts). They would grow into the largest plants of
their day (the tree-like Lepidodendron)
before being replaced by true trees, flowers and grasses.
Clearly visible are the small, hair-like structures considered to be the world's 1st leaves. |
For myself I’d have to say this is one of the most
accessible fossils sites I have ever heard of. You just drive outside of town a
few minutes, down Limestone Road, drive a few hundred meters to the tip of the
hill and there it is, right alongside the road.
I pulled the truck up and began to hunt about along the
open cuts, carefully searching for any signs of ancient life. Here and there
were clear impressions, though impressions of what I have no idea.
One looked like a worms burrow to me, though it could just as easily been a prehistoric sock.
One looked like a worms burrow to me, though it could just as easily been a prehistoric sock.
Every hill had a
cutting you can search through, and I was there during winter so there was
little danger of coming across any of the nastier, still living inhabitants of
the region. This is an important point and if you are thinking of visiting the
area listen carefully, BEWARE OF SNAKES. High grass, good trees, thick bushes
all suggest the best basking place for a cold snake is the exact places where
you can see the fossils- and in this part of the country there would be plenty
of the scaly terrors- so once again BEWARE OF SNAKES.
To show you how dangerous the area could be, I was so
fixated on seeing a fossil in the rocks that I never noticed the numerous
wombat holes covering the opposite side of every hill, so one last time, BEWARE
OF SNAKES!
My trip was a short one as I still had hours and hours to
go to the next location for the dinosaur tour, but it was still a thrill to
walk along an ancient sea shore, back when life first started taking over the
planet.
Surely one of the world's more picturesque fossil sites |