What is name of the trace fossil?

[Renata]

Hellow Guys, 

I have the doubt, the trace fossil of the picture is a rhizocorallium, diplocraterion or taenidium?

Or none of those three?

 

 

[Fossildude19]

What is the orientation of the fossil?

Does this move up or down through layers, or is this on the surface of a bedding plane?

Any idea how old the formation is ?

Where was this found?

 

EDIT: moved post to the Fossil ID forum.  

[Arizona Chris]

I dont see any U tube morphology here, thats what I would expect for rhizo or diplo.  

[EMP]

Orientation to the rock layers would be very helpful. However, i think it's safe to rule out diplocraterion as that fossil is described as follows: "Diplocraterion is an ichnogenus describing vertical U-shaped burrows having a spreite (weblike construction) between the two limbs of the U." These do not appear to be vertical. 

 

Taenidium doesn't quite fit the bill either, as it is described as being oblique to the plane and not criss-crossing, which these fossils appear to violate. 

 

Rhizocorallium is a bit more complicated, but i think it is the closest ID. It is described as: "The ichnogenus Rhizocorallium Zenker 1836 includes three ichnospecies: Rhizocorallium jenense Zenker 1836 representing straight, short U-shaped spreiten-burrows commonly oblique to bedding plane, and only rarely horizontal, Rhizocorallium irregulare Mayer 1954 representing long, sinuous, bifurcating or planispiral U-shaped spreiten-burrows, mainly horizontal, and Rhizocorallium uliarense Firtion 1958 representing trochospiral U-shaped spreiten-burrows (definitions after Fürsich 1974)." Your fossil appears to be horizontal to the plane. On top of this, there does appear to be minor bifurcation with the traces closest to the ruler. 

 

https://en.wikipedia.org/wiki/Diplocraterion

 

https://en.wikipedia.org/wiki/Rhizocorallium

 

http://ichnology.ku.edu/invertebrate_traces/tfimages/taenidium.html

[abyssunder]

I think, they might be Beaconites, maybe Beaconites capronus.

 

excerpt from C. Boyd, D. McIlroy. 2017. Three-Dimensional Morphology of Beaconites capronus from Northeast England. Ichnos. Vol. 0, NO. 0, 1–9

[Renata]

Thank you everyone. This is a Devonian outcrop.

I found this trace fossil at the Paraná Basin (Brazil).

The outcrop is the vertical wall, so the trace fossil is vertical.

So, I understood, that this trace fossil is a Beaconites?

 

[abyssunder]

That was my suggestion. I'm leaning toward that.

[Renata]

I think so that's more possible will be Taenidium 

Is it possible?