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When out fossil hunting...

So I thought I would do a post about things to remember when out and about doing your own fossil hunts, hopefully you'll find it helpfu...

Thursday 31 May 2018

Museums: Hauff Museum, Holzmaden

In this series I would like to share photographs of fossils and exhibitions from museums that I have visited. There won't be a lot to say about them so this will be mainly photographs of what I thought was pretty outstanding.

This post features some photographs taken in the Hauff Museum at Holzmaden. It is devoted to the palaeontology of the Posidonia Schieffer and exhibits a range of fantastic fossils, including invertebrates, marine reptiles, fish and pterosaurs. Enjoy.

The Hauff Museum featured a stepped profile of the stratigraphy through the Posidonia Schieffer. Each bedding surface featured a different fossil groups. You can see a marine crocodile (Steneosaurus) in the middle. It also featured plesiosaurs and ichthyosaurs.
An example of the most common fossils found in the Posidonia Schieffer; ammonites. These ammonites vary in size from a centimetre in diameter to around 40 centimetres (that we saw). 
This particular bedding surface exhibits the most spectacular of the fossils found in the shale. The long dark fossil is a piece of driftwood. Attached to it are crinoids (sea lillies). The wood along with the crinoids would have floated in the water column until the weight of the crinoids and bivalves became too much and the wood sank and became buried in the soupy sea floor.

This is a rather complete fossil of a hybodont shark. These sharks are easily recognisable from their fin spines that precedes their dorsal fins. The cause of death for this particular shark is believed to be that of greed. The palaeontologists here believe that this shark ate too many belemnites including the guards, which caused it to increase its weight, eventually the shark became to float and subsequently died. The belemnite guards are still in the stomach of the shark.
This is the fossil of one of the largest Ichthyosaurs. This is Temnodontosaurus, fossils of this are found throughout Europe, a skull is on display at the Charmouth Fossil Shop that was found in the Blue Lias. This animal would have been the top predator of the Jurassic seas. Sir David Attenborough's recent documentary on an Ichthyosaur from Lyme Regis is evidence that Temnodontosaurus hunted smaller Ichthyosaurs.
This is by far the most impressive specimen in the museum. This is an 18m long piece of driftwood that has been colonised by crinoids and bivalves. This makes visiting the museum well worth it.

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