Trace in Md

[Baddadcp]

Trace in sandstone/ mudstone. Can anyone see more or ideas of source? About 4 inches across.

[Miocene_Mason]

rhizolith perhaps?

[Baddadcp]

5 hours ago, WhodamanHD said:

rhizolith perhaps?

Yes, that's it. I learned something today. Can you pick up any shapes in the mass or is that an active imagination?

[Rockwood]

15 minutes ago, Baddadcp said:

Yes, that's it.

 

5 hours ago, WhodamanHD said:

perhaps?

I'd stick with perhaps.

[Miocene_Mason]

3 hours ago, Baddadcp said:

Yes, that's it. I learned something today. Can you pick up any shapes in the mass or is that an active imagination?

Little bit of both? I’ve seen a good amount of rhizoliths in the Potomac group (though usually in unconsolidated sediments so probably younger), and some others ones elsewhere so they are stored in my heads recognition bank. Now if I could just get dinosaur footprints in it....

[Miocene_Mason]

For those who don’t know which trace fossils we are talking about, zoomed in and pointed to:

[Rockwood]

Here is an example.

[Baddadcp]

5 hours ago, Rockwood said:

Here is an example.

How about these?

[Rockwood]

 

9 minutes ago, Baddadcp said:

How about these?

My take is that concretion preserved a different form of ichnofossil. Some sort of burrowing trace.

[Baddadcp]

3 minutes ago, Rockwood said:

 

My take is that concretion preserved a different form of ichnofossil. Some sort of burrowing trace.

That was my thought too. But the first one is up in the air. Apples and oranges?

 

[Rockwood]

Macintosh and yellow transparent  

[abyssunder]

55 minutes ago, Rockwood said:

 

My take is that concretion preserved a different form of ichnofossil. Some sort of burrowing trace.

That might be correct.

 

I would compare them with the ones below.

 

 

 

 

[Baddadcp]

9 minutes ago, abyssunder said:

That might be correct.

 

I would compare them with the ones below.

 

 

 

 

Amazing that these were found in New South Wales. Mine in Maryland, USA. Virtually identical.

[abyssunder]

18 minutes ago, Baddadcp said:

Amazing that these were found in New South Wales. Mine in Maryland, USA. Virtually identical.

One of my ex girlfriends once said: "the world is round"

[Rockwood]

19 minutes ago, Baddadcp said:

Amazing that these were found in New South Wales. Mine in Maryland, USA. Virtually identical.

In most instances it is impossible to know if they were produced by the same type of animal. Most any body shape moving through sediment can leave this shape behind. 

[Baddadcp]

2 minutes ago, Rockwood said:

In most instances it is impossible to know if they were produced by the same type of animal. Most any body shape moving through sediment can leave this shape behind. 

fair enough. But I am amazed at coloration AND form.

[GeschWhat]

5 hours ago, Baddadcp said:

How about these?

This one is really, really cool!