GuidesMagazineShopBuy FossilsJoin Hunts
BBird
Hi, I found these on Thursday at low tide on Hastings Harbour, anything worth identifying?

Click image for larger version - Name: DSC_1051.jpg, Views: 16, Size: 345.08 KB Click image for larger version - Name: DSC_1049.jpg, Views: 18, Size: 204.04 KB Click image for larger version - Name: DSC_1047.jpg, Views: 27, Size: 245.04 KB Click image for larger version - Name: DSC_1076.jpg, Views: 30, Size: 96.12 KB Click image for larger version - Name: DSC_1074.jpg, Views: 29, Size: 158.26 KB Click image for larger version - Name: DSC_1073.jpg, Views: 31, Size: 188.40 KB Click image for larger version - Name: DSC_1083.jpg, Views: 29, Size: 111.62 KB Click image for larger version - Name: DSC_1079.jpg, Views: 22, Size: 140.54 KB Click image for larger version - Name: DSC_1078.jpg, Views: 18, Size: 92.95 KB Click image for larger version - Name: DSC_1077.jpg, Views: 17, Size: 113.56 KB Click image for larger version - Name: DSC_1053.jpg, Views: 18, Size: 147.85 KB Click image for larger version - Name: DSC_1054.jpg, Views: 16, Size: 219.95 KB Click image for larger version - Name: DSC_1057.jpg, Views: 16, Size: 251.40 KB
Quote 0 0
Gandalf the White
Top three look like they have come of a large rock which has had sea snails or bivalves burrows on it.

The next three picture are either a pretty rock or part of an ammonite because the pattern reminds me of the side of some ammonites as shown in this picture bellow of a chamber of an ammonite.

For the next specimen it just looks like a long piece of banded flint.

The final black rock looks like pumice from volcanic reactions, it should be lighter than most rocks that size.

Hope I helped. Click image for larger version - Name: A2BD5B92-95D5-4288-B31D-5DAE8E7AD3DA.jpeg, Views: 11, Size: 64.40 KB
Quote 0 0
prep01
Hello BBird, 1 - 3 are rocks recently bored by a colony of bivalves (?Piddock); 4 - 6 is the partial outer whorl of an ammonite, very worn showing the sutures (suggest you search to find out more); 7 - 10 banded flint and 11 - 13 probably industrial man made substance.
Colin Huller
Quote 0 0
Gandalf the White
Do ammonites like, Dactylioceras athleticum (first picture) have segment in them which create a geode in them like, Desmoceras Ammonite (in the second picture) or is it just a plain rock spiral? Click image for larger version - Name: image.jpg, Views: 12, Size: 252.76 KB Click image for larger version - Name: FC50DDD7-FEDE-4EBA-A0F4-D0A0EE8DC3D7.jpeg, Views: 12, Size: 217.02 KB
Quote 0 0
Rolo
I very much doubt 4-6 is part of an ammonite. The Hastings beds are a non-marine formation. Although chalk material including flint is washed in from the west, and 4-6 looks like a flint pebble, flint does not generally preserve ammonites.
Quote 0 0
prep01
Hi BBird, I've now had a closer look at 4 - 6 and think it is a flint nodule. Rolo is quite correct in that flint is not found in the early Cretaceous, so it will have been eroded from chalk cliffs and moved, by whatever means - natural or man.
Colin Huller
Quote 0 0
prep01
Gandalf The White - it will depend on how it was formed - not the genus. Below are a couple of links but for more in depth papers / articles I suggest you search 'fossil diagenesis'.

https://ukfossils.co.uk/2016/01/28/how-fossils-formed/


Colin Huller
Quote 0 0
Gandalf the White
So if I had a ammonite in pyrite, (which I do have, same size and same species) would that be enough to create a nice pattern or not? Or do I just need to try it out? Anyway here is the ammonite in pyrite.
Click image for larger version - Name: CA961691-8173-458C-A08C-2327DCFC1561.jpeg, Views: 15, Size: 1.06 MB
Quote 0 0
prep01
IMHO, it's 'pot lu!ck' However I would ask someone like Byron Blessed in Whitby as I think the pyritised ammos are far less likely to be crystalised.
Colin Huller
Quote 0 0
Gandalf the White
I am going on the two Yorkshire fossil events so I will try and see him then.
Quote 0 0
Write a reply...


Discussions on fossils, fossil hunting, rocks, locations, and identifying your finds.
(C)opyright 2019 - UKGE Ltd and UK Fossils - Contact us