For comparison with Sarah West's Gryphaea - hers is I think a lot less common in this location.
No interactions present.
For comparison mine is here http://www.ispot.org.uk/node/260393
Hmm. I'm not sure about mine now. I brought one home so will take another photo and put it up soon.
OPAL Community Scientist
Yorkshire and Humber
I wouldn't swear to mine, either! The Phylloceras species (or genus) is extremely common around Redcar, but that doesn't automatically make me right.
Lat/Lng: 54.6012, -1.0265
OS grid ref: NZ629233