Help me to identify this fossil

[Sophie V]

Hello, I use google translate, because my English is poor. 
I have a possible tetrapod jawbone fossil. 

I send you pictures. 
Thank you in advance for your help.

Cordially

Sophie 

 

 

[Coco]

One of the rules of this forum is not to give a monetary assessment. It was written in the document you agreed to when you came here.

That said, I don’t know what your "fossil" is, probably not one.

 

Coco

[Fossildude19]

Where was this item found?

Country, region?

[val horn]

I am sorry but it looks geological and not fossil

[Mark Kmiecik]

I looked at an enlargement of the left side of the last photo you posted and it appears to be either sponge or possibly coral. Most of the photos are too blurry or out of focus to see any detail.

[Ludwigia]

This is at any rate definitely not bone.

[Rockwood]

Okay. This is a long shot. Burrow cast of an irregular echinoid ?

[Kane]

As good a reminder as any that New Brunswick has very stringent laws regarding fossil collection. 

https://www2.gnb.ca/content/gnb/en/departments/thc/heritage/content/heritage_conservationact/palaeontological.html

 

(en Français: https://www2.gnb.ca/content/gnb/fr/ministeres/tpc/patrimoine/content/loi_conservation_patrimoine/palentologiques.html )

 

Without a permit, collecting is not allowed. The fossils are the property of the province, and nothing in the permit grants permission to dispose of said fossils through sale. 

[Sophie V]

Kane Wow. I just found this when im going to walk. There is no place to panic with that. I'm not a collector or researcher! I'm just curious. One object is not a collection.

[Kane]

1 hour ago, Sophie V said:

Kane Wow. I just found this when im going to walk. There is no place to panic with that. I'm not a collector or researcher! I'm just curious. One oblet is not a collection.

All fossils -- whether single or multiple -- are the property of the province, and cannot be removed without a permit. That is the law, as frustrating as that might be. 

[Fossildude19]

Collecting means picking it up, and bringing it home.

Movement away from it's original location is collecting, whether one item, or a dozen.

We need to state this, as people may not realize that taking an item home from it's original location is considered collecting, and can be costly, in both time and legal fees.

 

 

 

[Mark Kmiecik]

11 hours ago, Rockwood said:

Okay. This is a long shot. Burrow cast of an irregular echinoid ?

 

Burrowing echinoids?

[Rockwood]

1 hour ago, Mark Kmiecik said:

 

Burrowing echinoids?

Eh, it might be more like bulldozing. The irregulars. 

[IsaacTheFossilMan]

16 hours ago, Mark Kmiecik said:

Burrowing echinoids?

15 hours ago, Rockwood said:

Eh, it might be more like bulldozing. The irregulars. 

 

As Rockwood suggested, irregular echinoids do in fact burrow - sand dollars go in at a very shallow angle, but some of the heart urchins use oral spines to laterally excavate material directly beneath them, quite literally burrowing into the ground.

 

That being said, I do not think this is a burrow cast, but rather an abiotic pseudofossil of sorts.

 

From Echinoid Burrow Bichordites monastiriensis from the Oligocene of NE Italy, Bernardi et al. Acta Palaeontologica Polonica, 55(3):479-486 (2010). https://doi.org/10.4202/app.2009.0064:

[Mark Kmiecik]

Cool! That's why I love this place. I learn something new almost every day.

[Alp]

That is a sedimentary rock. Looks like limestone. It might contain fossils of some lifeform inside but doesn’t look like anything from outside just a normal limestone. Break it open and take a look around!

[supertramp]

Interesting.

However, I wonder if those two alignments of small surface cavities are really part of a biological structure rather then a form of surface erosion driven by microfractures…or maybe a form of bioerosion not directly related to the main structure at one end of the sample

 

 

In fact, I see similar but less pronounced structures in other parts of the sample.

 

 

So: two types of biological structures not directly related? Or: one  fossil (the one at the end) with non-biological forms of surface erosion?

[Mark Kmiecik]

On 8/1/2022 at 4:48 PM, Sophie V said:

This looks kind of echinoid/crinoid-ish.

Edited August 3, 2022 by Mark Kmiecik