Monthly Archives

February 2015

* Our Dear friend Dean Lomax hits the headlines. *

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BBC News: Forgotten fossil found to be new species of ichthyosaur‏.

Our Dear friend Dean Lomax hits the headlines.

Palaeontologist Dean Lomax explains how what had been believed to be a plaster cast turned out to be a new species of ancient marine reptile. A fossil stored in a Doncaster museum for 30 years and thought to be a plaster copy has turned out to be a new species of ancient reptile. A young palaeontologist working with the University of Manchester found the fossil in 2008, in the collections of Doncaster Museum and Art Gallery. He realised it was the 189-million-year-old remains of an ichthyosaur – an extinct marine reptile. Further study confirmed it to be a previously unknown species. The finding has now been published in the Journal of Vertebrate Palaeontology.

 

Dean Lomax, the 25-year-old palaeontologist who studied the specimen, said it was so well preserved he could determine the contents of its stomach.

“We could see tiny hook-shaped features that were actually the hooks from the tentacles of squid,” he said. “So we know what its last meal was.”

Mr Lomax worked with Prof Judy Massare, from the State University of New York, comparing the specimen’s fossilised bones with those of almost 1,000 other ichthyosaurs in museums in the US and Europe. Mr Lomax explained that subtle anatomical features in its fin bones set the species apart from others.

Jurassic find

It is not uncommon to find ichthyosaur fossils in England. The sharp-toothed marine reptiles swam in large numbers in the seas around Britain when the dinosaurs roamed. This particular specimen was found in the rocks of Dorset’s Jurassic Coast in the early 1980s and brought to the museum, so it is not clear how it was eventually mistaken for a copied Silvia Danise from Plymouth University said its “rediscovery” was a “striking example of how important museum collections are for scientific research”.

“Collections are treasures that show their value each time we’re able to look at them with a different perspective, and by asking new scientific questions,” she told BBC News.

Dr Blanca Huertas, from the Natural History Museum in London, pointed out that there were still many species to discover in museum collections.

“Sometimes we discover things in the field,” she said, “but the collections are an incredible source of opportunities, since visiting them, people can study specimens and collections from hundreds of places across the entire planet and travel in time.”

Ichthyosaurs

Often misidentified as “swimming dinosaurs”, they first appeared in the early Triassic period (251 million to 199 million years ago) the name means fish-lizard, although the creature has been classified as a reptile since the mid-19th Century. Its length ranged from 1m to 14m – although the average length was 2m to 3m (the Doncaster fossil is 1.5m) the creature was noted for its sharp, robust teeth. Ichthyosaurs became extinct before the dinosaurs, dying out in the early part of the late Cretaceous period (145.5 million to 65.5 million years ago)

Source: Encyclopaedia of Palaeontology.

This new species has now been named Ichthyosaurus anningae – in honour of Mary Anning, the British fossil-hunter who discovered the first ichthyosaur on the Dorset coast in about 1811.

The hope now is that news about the significance of this ancient specimen might help track down the fossil hunter who found it.

Dr Stephen Brusatte, a palaeontologist from the University of Edinburgh added that there was “a whole lot more still to find out there”.

He told BBC News: “Palaeontology is a unique science because you don’t need an advanced degree or specialised training to find a fossil, just patience and a keen set of eyes.”

Mary Anning

The new species has been named after 19th Century palaeontologist Mary Anning.

 

Fantastic Fossils And Dastardly Dinosaurs

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Hi everyone,

At the Stamford library February the 19th 2015 2.00pm to 4.30pm was a very busy time for the members of the Stamford and District Geological Society. Being as it is half -term holidays for the children we found ourselves inundated with lots of families pouring through the doors of this historic building. To join us for an afternoon of prehistoric fun, quizzes and craft activities.

It was a wet and windy day with most of those looking a bit bedraggled. That certainly didn’t deter the children form dragging mums and dads along to show off their fossils that they had collected from all around the country.

Some of the fossils where brought along just to show other enthusiasts but also a lot of them where brought along for our team to give it our best shot to try and identify them or at least guide them in the right direction.

Due to popular demand the question asked many times from the parents was “where can we take our children to go fossiling “. So we struck upon an idea and are now going to organise this summer a family oriented field trip to a local nature reserve which has spoil piles of Oxford Clay full of Belemnites and Gryphaea.

My son Elliot was extremely helpful in helping to i.d. some of the Oxford Clay fauna that was bought in. He also took along with him two ammonites from his collection to show on the display table.

I took 50 membership leaflets to join the Stamford and District Geological Society they were all gone by the end of the day. So hopefully fingers crossed we may see some new members joining us this year.

Here are a few photos of the event.

display table 1

display table 2

free fossils 1

And a few photos of the many fossils brought in.

fossils bought in for i.d. 3

fossils bought in for i.d. 4

fossils bought in for i.d.6

It was just a few hours with fossils and a lot of smiling faces…..perfect.

Regards,

Darren.

The Tertiary igneous province of N.W. Scotland ( review )

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Thank you to those and DR Ian Sutton who ventured out again on another chilli night to participate in our final winter talk of the year.

Topics regarding Geology always leave me google eyed but the facts, with humour, coupled with the scenarios that Ian created made this evening thoroughly enjoyable.

It was a real treat as Ian took us though his slideshow to view phots of members past and present on one of his many geological trails.

To hear about Alan Dawn constructing a makeshift stretcher to collect ammonites and belemnites and to commandeer two members to carry it for him brought a smile to all those involved.

And would you have guessed (I certainly didn’t) that curling stones come from the “Ailsa Craig”.

Ailsa Craig

scottish curling team

I hope Ian can visit Tinwell Village hall again next year….those glacial and landslide photos would be great to see again.

Regards,

Darren.

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