Iowa trip

[aek]

Just thought I'd share some finds from a club trip to the Devonian of Iowa last Sunday. It was a good trip.

 

A nice clam.

 

This Greenops disintegrated shortly after exposure.

 

Crassiproetus sp.

 

Before

 

After. 

Enrolled Greenops sp. and Eldredgeops noorwoodensis

 

 

Group shot

 

 

[goatinformationist]

Great trip and great pics.

[aek]

@goatinformationist Thanks!

[Fossildude19]

Congratulations on some great finds!  

Thanks for posting this. 

[aek]

@Fossildude19 Thanks!

[connorp]

Very nice trilobites! Thanks for sharing.

[Ludwigia]

Nice finds!

[Monica]

That's a nice double-trilo-find!  Congrats!

[minnbuckeye]

Nice finds. Were they from the first location or the second spot?? My luck wasn't as good. One half dozen partials of which I gave to someone looking so hard for a trilobite but not succeeding.

 

 Mike

[aek]

@connorp @Ludwigia @Monica Thanks! 

@minnbuckeye  These were found at the first location. I didn't have much luck at the second spot - too dusty!

[FossilDAWG]

Nice trilobites! That first location seems to have been very good to you.

 

Don

[Kane]

Well done!

 

Is that Crassiproetus complete? I've never encountered an enrolled one (outside of the literature)! Even if it is just the upper half, that is still a sweet find.  

[aek]

@FossilDAWG Thanks!

@Kane  Yes, a little squashed but all there. I think it's Crassiproetus arietinus 

Some pics..

 

Greenops and E. noorwoodensis

[minnbuckeye]

3 hours ago, aek said:

These were found at the first location

 

I actually found all of mine at site 2!!

 

 Mike

[piranha]

Eldredgeops norwoodensis occurs in the Rapid Member and Crassiproetus arietinus occurs in the Solon Member according to Hickerson 1992:

 

LITTLE CEDAR FORMATION

Rapid Member
Crassiproetus bumastoides (Walter, 1923)
Crassiproetus occidens (Hall, 1861)
Crassiproetus n. sp.
Dechenella (subgenus nov.) n. sp. #2
Phacops rana norwoodensis (Stumm, 1953)
Greenops (Neometacanthus) barrisi (Hall, 1888)
Greenops (subgenus ?) fitzpatricki (Walter, 1923)
Greenops (Greenops) n. sp.

Solon Member
Crassiproetus arietinus (Walter, 1923)
Dechenella (subgenus nov.) prouti (Shumard, 1863)
Dechenella (subgenus nov.) n.sp. #1
Dechenella (subgenus nov.) ct. D. rowi (Green,1838)
Dechenella? nortoni (Walter,1923)
Dechenella (Dechenella) ct. D. haldemani (Hall,1861)
Mystrocephala ct. M. pulchra (Cooper and Cloud, 1938)
Cyphaspis sp.
Phacops iowensis iowensis (Delo, 1935)
Greenops (Neometacanthus) n. sp.
Scutellum (Scutellum) depressum Cooper and Cloud, 1938

 

Hickerson, W.J. 1992
Trilobites from the Late Givetian Solon Member, Little Cedar Formation of Eastern Iowa and Northwestern Illinois. pp. 123-141  PDF LINK

The stratigraphy, paleontology, depositional and diagenetic History of the middle-upper Devonian Cedar Valley Group of Central and Eastern Iowa. Guidebook 16

 

 

 

figures from:

 

Hickerson, W.J. 1992

Trilobites from the Little Cedar Formation of Eastern Iowa and Northeastern Illinois. MSc Thesis, University of Iowa, 166 pp.

[Jeffrey P]

Very nice to see Devonian trilobites from other places. Congratulations. Those are very impressive specimens. Thanks for sharing them with us.

[FossilDAWG]

Thanks for the link, Scott.   Seems like a nice diverse fauna. 

 

Don

[aek]

@piranha Thanks for the link.