Cory’s Landing - Portsmouth, Rhode Island

[JurassicPiper]

Today I made my first trip to Cory’s Landing in Portsmouth, Rhode Island to split Pennsylvanian shale. I spent about three hours there and found numerous specimens. I think they’re Pecopteris, but I would like to defer to you fine people on the Forum who have more experience than I. If anyone can give a more precise ID - or an altogether new ID - that would be extremely helpful.  
Likewise I found a few strips of shale with strange sectioned streaks(pictured) that I can’t identify. I’m willing to conclude it’s just nothing, but thought I would ask. 
If anyone would like me to try and take better pictures let me know. 

Thank you, all!

 

 

 

 

 

 

 

 

[Fossildude19]

Welcome to the Forum.

 

I believe you mean Cory's Lane. 

Hard to tell from the pictures provided - need to see detail of the veination in the pinnules.

 

Pecopteris arborescens is one of the most common fossils found there.

 

Here is a list of species from there:

 

 

[Rockwood]

I think the feature shown in 4 + 5 may be related to the way these sediments were deposited, I imagine it as a thick slurry of plant fiber and clays. They used to quarry graphite in the area. 

[JurassicPiper]

The Landing is on Cory’s Lane. But, semantics haha.
This is the clearest picture I could get of the veination from picture #2. And another picture through a(very cheap) jewelers loupe. I can see very clearly with the naked eye but it’s difficult to get on camera. Apologies. 

Edited May 13, 2022 by JurassicPiper
Added picture

[Fossildude19]

Cropped and colors reversed:

 

 

 

 

I suspect these are probably one of the species of Mariopteris from there.  @paleoflor  @fiddlehead

[Rockwood]

3 hours ago, JurassicPiper said:

This is the clearest picture I could get of the veination from picture #2. And another picture through a(very cheap) jewelers loupe. I can see very clearly with the naked eye but it’s difficult to get on camera. Apologies. 

I strongly suspect the camera is doing its job. It's common to look at a piece through a loupe and be disappointed with the actual level of detail seen in the preservation.

[JurassicPiper]

2 hours ago, Fossildude19 said:

Cropped and colors reversed:

 

 

 

 

I suspect these are probably one of the species of Mariopteris from there.  @paleoflor  @fiddlehead

Do you think the other imprints are Pecopteris?

[JurassicPiper]

11 hours ago, Rockwood said:

I think the feature shown in 4 + 5 may be related to the way these sediments were deposited, I imagine it as a thick slurry of plant fiber and clays. They used to quarry graphite in the area. 

What do you think could cause markings like this? They almost look like impressions of something biological. And I found several of them. Too many to want to take back home with me. 

[Fossildude19]

6 and 7 look to be Pecopteris to me, but I could be wrong.

 

[Fossildude19]

1 minute ago, JurassicPiper said:

What do you think could cause markings like this? They almost look like impressions of something biological. And I found several of them. Too many to want to take back home with me. 

 

 

Could be root imprints.

[Rockwood]

34 minutes ago, JurassicPiper said:

What do you think could cause markings like this? They almost look like impressions of something biological. And I found several of them. Too many to want to take back home with me. 

Smeared layers that were a more pure clay seen in section.

[Bguild]

Hey there - I agree, the ferns are Pecopteris. Cool stuff! I believe the streaks are Cyperites. At that location you’ll often come across big slabs filled with those thin leaves.

Edited May 24, 2022 by Bguild

[Mark Kmiecik]

I think #2 is Mariopteris nervosa, but I may be wrong.

[JurassicPiper]

15 hours ago, Bguild said:

Hey there - I agree, the ferns are Pecopteris. Cool stuff! I believe the streaks are Cyperites. At that location you’ll often come across big slabs filled with those thin leaves.

Oh wow. Thank you. That’s something I’ll definitely have to look into further. They were absolutely everywhere at one spot in particular. 

[Bguild]

1 hour ago, Mark Kmiecik said:

I think #2 is Mariopteris nervosa, but I may be wrong.

Hard to say for certain  

 

To me what little veination is preserved more resembles that of Pecopteris. Mariopetris is also usually a little more bushy and asymmetrical.

 

 

Edited May 24, 2022 by Bguild

[Bguild]

34 minutes ago, JurassicPiper said:

Oh wow. Thank you. That’s something I’ll definitely have to look into further. They were absolutely everywhere at one spot in particular. 

 

Sounds about right! Cyperites are cool until they're all you start finding . Here's some notes on them and an example from right up the street in the Carboniferous of Southern Massachusetts.

 

 

Edited May 24, 2022 by Bguild