Jump to content

Partial Trilobite?


EPawsF15

Recommended Posts

I have no information about the origin of this fossil, except to say that it came from a large bag of pea pebbles purchased at a big box store in the St. Charles, Missouri area.  The raised ridge in the center made me wonder if it's a trilobite.  There's also an interesting "shift" about midway down the ridge that creates an offset of sorts.  Maybe that's the result of settling over time?  It measures about 0.75 inch long, as shown in one of the photos.

Short Side.jpg

Size.jpg

Upside Down.jpg

Wide Side.jpg

Long Side.jpg

Pointy Side.jpg

Link to comment
Share on other sites

You are correct. 

This is a partial trilobite, part of the thorax and pygidium. 

It was probably a molt, which is why the pygidium is offset from the thorax. 

Looks like perhaps a Dalmantid trilobite. 

    Tim    VETERAN SHALE SPLITTER

   MOTM.png.61350469b02f439fd4d5d77c2c69da85.png      PaleoPartner.png.30c01982e09b0cc0b7d9d6a7a21f56c6.png.a600039856933851eeea617ca3f2d15f.png     Postmaster1.jpg.900efa599049929531fa81981f028e24.jpg    VFOTM.png.f1b09c78bf88298b009b0da14ef44cf0.png  VFOTM APRIL - 2015  

__________________________________________________
"In every walk with nature one receives far more than he seeks."
John Muir ~ ~ ~ ~   ><))))( *>  About Me      

Link to comment
Share on other sites

This one is weird!  It has an echinoderm-ish feel to it but I am not sure.  It might be an impression, in which case one would have to imagine it pressed into modeling clay to see the "positive" surface.

 

Don

  • I found this Informative 1
Link to comment
Share on other sites

It sort of, almost, but not quite, looks like fish vertebrae & ribs.. or a mold of a mold of some. :shrug:

Accomplishing the impossible means only that the boss will add it to your regular duties.

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
×
×
  • Create New...