Otolith

2012-Dec31-OtolithOne of the smallest vertebrate fossils I have is this fish ear bone or Otolith.  It is on a sliver of shale from the Lower Jurassic, near Lyme Regis, Dorset.

I have been displaying a fossil a day for a whole year now, which was my original target.  All of my fossil collection has been displayed, except a few models, casts and traces of mostly pterosaur material.  I also have large quantities of Pleistocene gastropods and a few other trilobite remains.  These offerings will not be shown as I am concluding my posts today.  My collections will now be systematically broken up and distributed, as I am no longer using them.  Only the pterosaur materials and selected trilobite fossils will remain with me.

Check out The Pterosaur Database and Distant Thoughts for more of my irregular posts.

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Sea Shells

 

2012-Dec30-PisidiumThese specimens of Pisidium amnicum are from Pliestocene deposits in Lincolnshire.  They are indistinguishable from the modern Peaclam that can be found on UK beaches today.

Tiny Tooth

2012-Dec29-FishToothThis fine tooth is a crusher tooth from an ancient fish species.  It is from the Farringdon Sponge Gravels in Berkshire, and it is in very fine condition for such a small object.

Ancient Fish Tooth

2012-Dec28-FishToothThis tiny tooth is from a type of fish that remains unknown.  The tooth is rounded and has no sharp edges.  It was found in the Farringdon Sponge Gravels, which are a deferred deposit, so the fish to which this tooth belonged is a very ancient species.

Recurved tooth

 

2012-Dec27-GaleocerdoGaliocerdo contortus is the tooth of an extinct Tiger Shark from the Calvert Cliff Formation of Maryland, USA.  These teeth are very distinctive and some will have serrations at the base of the tooth.  This one comes from part of the jaw where the teeth are smooth-edged.

Genkgo

2012-Dec26-GenkoThe sediments of the Lower Long Nab Member, Scalby Formation, Scalby Ness, Yorkshire contain many plant remains.  This leaf of Genkgo huttoni is Middle Bathonian in age and is similar to the modern-day Genkgo biloba.  This tree has been around since the start of the age of dinosaurs.

Harpoceras

2012-Dec26-HarpocerasThis small impression is about 12mm across.  It is Harpoceras cf exaratum from the lower cliff at Runswick Bay, Yorkshire. The exact OS grid reference is  NZ817155.  The Jurassic shales are full of impressions of ammonites of many types and they are not always easy to identify with precision – hence the ‘cf’ which is an abbreviation of the Latin word Confer, meaning to associate as similar or bring into the same context as. In reality “It looks like this, but we are not certain”.