A Few Different Ids Needed.

[Raistlin]

The first is likely a Phanocrinus sp. crinoid head from the Golconda formation (Mississippian). I was wondering if I could get a more certain ID. I am thinking of putting it in the invert fossil of the month. I found it on the ground just as you see it aside from a light brushing off of dirt.

http://imgur.com/a/GnKl6

The next I found toward the end of last year. I believe it is Grand Tower Limestone formation (Devonian).

These next are what I believe to be ripple marks but I am unsure. One came home with me the other was way to large to transport.

The first is from I believe to be the Waltersburg Sandstone formation. It came home with me.

This one is from the Golconda formation.

Thanks for your help. I will post some more stuff later (first I will do a quick post on another pathological blastoid I have found in the Menard formation).

Robert

[howard_l]

The last few pictures appear to be ripple marks a sedimentary feature

[Raistlin]

Which set? The Golconda formation or the Waltersburg Sandstone formation?

And does that mean they are recent ripple marks or "fossil" ripple marks? Or are they just something created by nature and not even real ripple marks?

[howard_l]

It was probably a beach environment with ripple marks in the sand, it was buried by other sediments and then lithified preserving the ripple marks.

[Raistlin]

Ah, okay. thanks. Sorry sometimes my understanding is not the best.

The period they are from would make them beach environments. I think the Golconda might have been deeper water though than the Waltersburg. I did not find any fossils at the Waltersburg location though I did find something that I need to post later that looks like mud cracks of some sort but is likely just geological.

[ZiggieCie]

Great Crinoid, and I like the others also.

Fossilized wave marks in sand, I have some also, neat to show people.

[howard_l]

Excellent crinoid, I am not sure about the second one, a small coral maybe?

[Fossildude19]

Yes, the odd one is the infill cast of a Pleurodictyum sp. coral.

Regards,

[rwise]

Great Crinoid.

[Archimedes]

Nice finds, I always like seeing u Mississippian finds, the crinoid is likely Phanocrinus formosus being from the Golconda Fm, and the blastoid is likely Pentremites spicatus since you collected it in the Menard and it looked to have large deltoids that have been broken off.

[abyssunder]

Yes, the odd one is the infill cast of a Pleurodictyum sp. coral.

Regards,

I agree.Related to this,here is an older thread of our member Rockwood,: http://www.thefossilforum.com/index.php?/topic/33682-what/

and another picture from the State Museum for Natural History Stuttgart:

Description:"Coral Pleurodictyum with brachiopods in a sandstone of the Lower Devonian of Daun / Eifel. These coral colonies are often found as here along with a worm tube. Maybe these two organisms living together in a symbiotic relationship."

Edited June 28, 2015 by abyssunder