Like the small whole ammonite
this was part of an $8 fossil kit.
As you can see from the measurements, this specimen is fairly small, about the size of a nickel. Though this is typical of what
you'll find in these fossil kits, some specimens were a bit larger, perhaps the size of a
Though this specimen is fairly flat, possibly due to compression, many are well rounded and had a conical, tubular or spherical
shape. Still others had quite
a variety of other shapes.
This is the backside of the
which I think actually looks more interesting stereoscopically.:)
It would be nice to have a stereoscopic picture of a living blastoid, but you'd have to go back to the permian for that!
Anyone for a real life Permian Park?