Walking over Time

I had to venture to Milton Keynes to the computer shop . I looked down at the polished floors and was pleased to see a beautiful Belemnite.

Belemnites are molluscs which became extinct at the end of the Cretaceous period about 65 million years ago. They lived during the Jurassic and Cretaceous periods a time of 135 million years.They are a member of theCephalopods the same group as squid and cuttlefish today.

The fossil remains that are found are often bullet shaped and are the hard part of the animal called the rostrum that is preserved as a fossil. They are sometimes found in large groups called bullet battlefield where a large number died together and were preserved. They have been found in the fossilised stomach remains of ichthyosaurs ( who would have feasted in them )

The largest belemnite rostrum found is one from Indonesia and is 46 cm long,the smallest is found in England and only 3cm in length.

As I wandered back from the computer shop I made another discovery beneath my feet . This time a beautiful ammonite with some great detail.

The Ammonite is probably the best known fossilised animal. The name ammonite comes from the Greek ram horn god Ammon.

They swam in the seas 250-65 million years ago again becoming extinct at the end of the Cretaceous. Ammonites are Molluscs also belonging to the group cephalopods. The closest living relative of the ammonite alive today is the nautilus that can be found in the Pacific .

I wasn’t expecting to see these fossils today , on fossilising trips we have our eyes peeled . At Aust last year we found some great ammonites and Folkestone in Kent has some beauties in the Gault clay, definitely need to visit there soon .

Here is a little piece we found.

Below are a couple of fantastic specimens from University of Oxford Natural History Museum.

E X P L O R E M O R E. … let’s go on a fossilising trip !

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