I bought this ammonite on the internet. I wanted to improve my ammonite collection, so a bought a large ammonite that used to be in a museum and this little Dactyleoceras from holderness. It is so small no one knows the exact species, but It is a baby Dactyleoceras.
What formation do you think it came from?
Nearly missed this post! sorry.
Your specimen looks well prepaired but there is no size mentioned only a baby Dac.
Going by your description and the matrix it is in I would say it is a Dactylioceras grassile.
Typical of the surrounding matrix that this 'Dac' is found in there looks to be several specimens although you usually find this ammonite with many more of it's kind in the matrix.
If you are lucky enough to find some rock containing these ammonites sometimes the matrix contains other different ammonites - like Harpoceras sp.
The Holderness doe's not have solid rock formations like around the Whitby area it only has 'Tills' yes underneth the Tills is the cretaceous chalk (what the Humber Bridge is built on)
The Tills are made up from boulder clay and there is several different types.
Thanks for the reply,
The dac is 1.3cm. The fossil that used to be In a museum is a harpoceras. It is 11cm but the interesting thing is it looks like it has been repaired, but it actually has a large mineral vein.
Here is a picture of it
Yep, that's what it is. I will try to identify your sponges, but it isn't my strongest subject. When you post yours I will post one of mine that I found so you can compare it.
my fossils arrived today and you were right about it containing more than one ammonite. One of them is inside the rock, so I'm going to get an air brush for Christmas. Can they be dangerous? Do you need some sort of mask so you don't breath the tiny pieces of rock in?
The Somerset harpoceras is also a great ammonite.
You can't really see the other little dac in the picture, but it is definietly an ammonite which looks a bit bigger than the other one.
Before you start prepairing fossils let's take one very important thing into consideration - your safety.
You only have one pair of eyes - so before you do any fossil preping the safety glasses go on.
Dust, usually the Yorkshire coast material is high in pyrite content so you must use a dust mask.
Noise, any tool you use especialy if it is electric or air powered will not be quiet so ear defenders need to be used as well.
I use 'air pens' for some of my fossil preparation, the rest is done by using hand tools but I have a friend who has one of the tools in your post and he turns out some fantastic specimens!
What you have to remember is the Yorkshire coast rock is very very hard so you have to keep your stylus sharp and don't try to remove lots of material quickly.
Sometimes it takes forever to reviel a specimen, not hours, not days, not weeks or months sometimes a lot longer than that.
A quick thought - whatever fossil prep tool you have always keep a spair stylus handy.