Marine Trace fossil

[PFOOLEY]

I have seen this type of trace many times before...each time I wonder. Do you have any ideas?

 

 

The knife is 3" in length...thank you for your thoughts.

 

[TqB]

A version of Zoophycos?

[supertramp]

7 minutes ago, TqB said:

A version of Zoophycos?

...my thought too,

ciao

[abyssunder]

I agree with Tarquin. Zoophycos. It's the Upper Creataceous (Cenomanian-onward) morphotype.

 

excerpt from D. Olivero. 2003. Early Jurassic to Late Cretaceous evolution of Zoophycos in the French Subalpine Basin (southeastern France). Palaeogeography, Palaeoclimatology, Palaeoecology 192. 59-78

 

[Fossildude19]

My first thought was Zoophycus as well. 

Nice find, Mike. 

[abyssunder]

Here is a more recent document regarding to Zoophycos, comprising the Upper Cretaceous - Lower Miocene segment; very interesting, BTW : Monaco, P. et al. 2017. Evolutionary trend of Zoophycos morphotypes from Upper Cretaceous–Lower Miocene in the type pelagic sections of Gubbio, central Italy. Lethaia, Vol. 50, pp. 41– 57

 

Last but not least, Zoophycos from the Upper Pliocene : R. G. Broomley, N.-M. Hanken. 2003. Structure and function of large, lobed Zoophycos, Pliocene of Rhodes, Greece. Palaeogeography, Palaeoclimatology, Palaeoecology 192: 79-100

 

[PFOOLEY]

Awesome...thank you all for your input.

 

I once again learned something new on this terrific Forum. 

[doushantuo]

themarkofthelion

[doushantuo]

OneofthebestZOOPHYCOSARTICLES

[PFOOLEY]

I was sitting with Dr. Lucas (NMMNH), flipping through a sedimentology book when I saw a photo and description of Zoophycos. I mentioned that I've seen this in the Semilla Sandstone and Spencer thought that was odd. He went on to tell me that it would be an important record, but it shouldn't be present in the Semilla Sandstone (shallow water). I dug through The Forum to find this thread. When Dr. Lucas saw the photos he said "That is Rhizocorallium"...I let him know he was one smart dude.

 

The Semilla Sandstone specimen...

 

...and a few images for comparison...

From: Kansas University Ichnology

 

From: The ichnogenus Rhizocorallium: Classification, trace makers, palaeoenvironments and evolution

 

From: Rhizocorallium in estuarine Ingersoll shale (Upper Cretaceous Eutaw Formation, Eastern Alabama coastal plain)

[Fossildude19]

Thanks for the update, Mike.  

Looks like a perfect match. 

 

[doushantuo]

Don't post paywalled images, ( as such), especially from Science Direct /Elsevier

Most of Dirk Knaust's research can be found on Re*ea***Ga**, BTW, including his 2013 Rh review

below: a tight Rh turn in the Ceratitenpflaster of Germany

[Auspex]

4 hours ago, PFOOLEY said:

When Dr. Lucas saw the photos he said "That is Rhizocorallium"...

This place is unbelievable!

Well done!

[abyssunder]

A median section through the specimen (perpendicular to the bedding plane) might help to make the distinguishing between the two  tracefossils (Zoophycos and Rhizocorallium). At this point could be any of them.

[doushantuo]

One of the early verbal descriptions of Zoophycos("Taonurus"),pretty accurate according to Simpson(1970)(excerpt from Sarle's description in the Proceedings of the Rochester Academy of Science).His views on the tracemaker aren't correct,but the morphological description might be useful)

 

some of you may find the item below interesting.(less than 0,5MB)

 

 

 

 

 

 

 

 

Lowemarkagupa_al-2004-Paleoceanography.pdf

[piranha]

On 11/29/2018 at 7:24 AM, Fossildude19 said:

Looks like a perfect match.

 

 

I agree. 

Rumor has it that Spencer Lucas is pretty good on the subject of New Mexico Paleontology.