Went out for a couple of hours, and need help!

[Newbie_1971]

I went out today for a couple of hours and found some good stuff. Could someone help me out please,  and let me know what the bumpy grayish brown thing is with the pattern (in the first photo), and the last 3 photos (besides the last, which is an isotelus) thank you!

Edited April 25 by Newbie_1971

[ted coulianos]

"bumpy thing" is a fragment of bryozoan colony, maybe Monticulipora sp. ; enrolled trilobites look like Flexycalymene  (meeki ??);   looks like you were in the Ordovician. Hopefully, someone else will chime in and confirm.

[Tidgy's Dad]

For the bryozoan ID, do you know which formation you were in?

[Newbie_1971]

Ordovician

[Tidgy's Dad]

Yes, not quite what I meant.

The Ordovician is split into Early, Middle, and Late and in North America, the upper parts of the Late Ordovician are known as the Cincinnatian Series.

This is broken into stages and I think you were likely in the Richmondian Stage.

But these describe the age of the rock.

Each of the actual sequences of rock is differentiated into Formations which each have a distinctive appearance. 

If we know which formation we are in, we can often find a faunal list and narrow down the species found there.

Anyway, that could be Monticulipora as mentioned above.

[FossilNerd]

7 minutes ago, Tidgy's Dad said:

Yes, not quite what I meant.

The Ordovician is split into Early, Middle, and Late and in North America, the upper parts of the Late Ordovician are known as the Cincinnatian Series.

This is broken into stages and I think you were likely in the Richmondian Stage.

But these describe the age of the rock.

Each of the actual sequences of rock is differentiated into Formations which each have a distinctive appearance. 

If we know which formation we are in, we can often find a faunal list and narrow down the species found there.

Anyway, that could be Monticulipora as mentioned above.

I think you are on the right track and of course agree with you.  
I know he usually hunts in areas similar in age (if not exactly the same) as St. Leon, so I think your assumption is right with Richmondian in age. 
I’d even venture a further guess and say he typically hunts the Liberty Formation looking for the flexi rollers found in the “butter shale” there, but that is only an educated guess from his previous finds and these might possibly have come from other Richmondian Formations like Whitewater, or Myville…errr… I mean Waynesville… 

[DPS Ammonite]

4 hours ago, Tidgy's Dad said:

The Ordovician is split into Early, Middle, and Late and in North America, the upper parts of the Late Ordovician are known as the Cincinnatian Series.

This is broken into stages and I think you were likely in the Richmondian Stage.

 

You are mixing your stratigraphic terms. Early, Middle and Late refer to Ordovician epochs, not series. Epochs are divided into ages and not stages.

 

The Cinncinnatian Epoch and Richmondian Age are local terms and not used in newer stratigraphic charts such as the one from the GSA:

 

 

[Tidgy's Dad]

7 hours ago, DPS Ammonite said:

 

You are mixing your stratigraphic terms. Early, Middle and Late refer to Ordovician epochs, not series. Epochs are divided into ages and not stages.

 

The Cinncinnatian Epoch and Richmondian Age are local terms and not used in newer stratigraphic charts such as the one from the GSA:

 

Yes, I understand this.

I never said that Early, Middle amd Late were series, I probably should have mentioned the word epoch, but then went on to say specifically that in North America it is known as the Cincinnatian and Richmondian. Thus I did make it clear that these were your "local terms".

Stages is a valid term according to the ICS Subcommission.

See

 

Perhaps it would be useful for you to read some of this which also refers to the Cincinnatian.

https://ordovician.stratigraphy.org/

[Ludwigia]

And as far as I understand it, "Series" is the Chronostratigraphic unit (strata) and "Epoch" is the Geochronologic unit (time). The ICS places both as alternates at the same spot in their chart.

 

ChronostratChart2023-06.pdf