Kummelonautilus?

[PFOOLEY]

While on an adventure with @Pilobolus, exploring the Dakota Sandstone and underlying shales, I found something very exciting*...

 

...my first coiled Nautiloid! 

 

Coiled Nautiloid

Upper Cretaceous (Cenomanian) Paguate Member of the Dakota Formation

Sandoval County, New Mexico

 

 

Now, after a bit of research, I write here to lean on this Forum for assistance with identification. I find that this specimen sits well in the genus Kummelonautilus...what say you?

 

Many thanks for your help,

 

-P.

 

*Bryan can attest to my yelling and jumping around.

 

@FossilDAWG

 

 

[PFOOLEY]

A few views of the inner whorls...

 

 

 

Please let me know if more photos are needed.

[Ludwigia]

It may also be a Cymatoceras. Are there any remnants of the shell on it?

[Al Dente]

I did a quick Google search and found an article that discusses two Nautiloids from the Cenomanian of New Mexico. The paper is titled "Cenomanian (Upper Cretaceous) Nautiloids from New Mexico". A quote from the abstract- "The only occurrences known are Pseudocenoceras largilliertianum (d'Orbigny, 1840) in the Acanthoceras amphibolum zone of Cerro de Cristo Rey in Dona Ana County, N. Mex., and Angulithes fleuriausianus (d'Orbigny, 1840) in the A. amphibolum zone in Valencia and McKinley Counties, N. Mex."

[belemniten]

Cant help with the ID but this is a great specimen 

[ynot]

Congratulations on the unique find!

Wish I could help with the ID.

[Tidgy's Dad]

Lovely specimen. 

Congrats! 

[Peat Burns]

Wow!  Stellar find.  Congrats! 

[dalmayshun]

beautiful

[PFOOLEY]

58 minutes ago, Al Dente said:

...and Angulithes fleuriausianus (d'Orbigny, 1840) in the A. amphibolum zone in Valencia and McKinley Counties, N. Mex.

Thank you, this is excellent. Getting closer...

 

[michele 1937]

1 hour ago, PFOOLEY said:

A few views of the inner whorls...

 

 

 

Please let me know if more photos are needed.

Cenoceras sp  Creta sup.

[PFOOLEY]

1 hour ago, Al Dente said:

"Cenomanian (Upper Cretaceous) Nautiloids from New Mexico"

[doushantuo]

suture(Wiedmann,1960):

A: whorl section,position of sipho indicated

 

 

 

 

[Phevo]

What a beaut

 

[PFOOLEY]

@Uncle Siphuncle, I read in another thread of your Nautiloid specimens...would you have any from the Grayson Marl or Del Rio Clay?

[PFOOLEY]

5 hours ago, belemniten said:

...this is a great specimen...

 

5 hours ago, ynot said:

Congratulations on the unique find!

 

5 hours ago, dalmayshun said:

beautiful

 

5 hours ago, Peat Burns said:

Wow!  Stellar find.  Congrats! 

 

5 hours ago, Tidgy's Dad said:

Lovely specimen. 

Congrats! 

 

4 hours ago, doushantuo said:

...Pfooley,that's a very nice find !!!!!!...

 

Thank you. I have found some spectacular fossils in my tenure...this quickly topped the list as the most wonderful. 

 

 

[izak_]

Very nice find!

[JohnJ]

Well done, Mike!

[PFOOLEY]

4 hours ago, Phevo said:

What a beaut

 

 

10 minutes ago, Foozil said:

Very nice find!

 

6 minutes ago, JohnJ said:

Well done, Mike!

 

Thank you. Charlie started a bucket list thread that I posted in and darn near four years to the day, checking this one off mine. I just want to wear it around on a chain.

 

[PFOOLEY]

This...

 

https://www.google.com/url?sa=t&source=web&rct=j&url=http://www.palaeo-soc-japan.jp/download/TPPSJ/TPPSJ_NS134.pdf&ved=2ahUKEwjw9o7r74raAhVC_oMKHZ8yAN04ChAWMAJ6BAgIEAE&usg=AOvVaw3OBIKucRA6IGkXIT4YXe2e

 

...is where I staggered down the Kummelonautilus path.

[Heteromorph]

Beautiful specimen! I have found several nautiluses in my neck of the woods but never that complete and with the sutures so well defined. Nice find! 

 

Not sure if this helps, but here are a few links with Cenomanian nautiluses. The first link is the Grayson formation and the second and third links are the Del Rio Clay formation. The nautiluses pictured from the Grayson are not as well preserved as your’s and do not show the sutures nearly as well. They are all Cymatoceras sp. The nautiluses pictured in the second and third links are pyritized micromorphs from the Del Rio Clay so they show the sutures better. Almost all ammonites and nautiluses found in the Del Rio Clay are pyritized micromorphs. According to this the only species of nautilus in the Del Rio Clay is Cymatoceras hill. I must admit that since this paper is from 2000 some of the information therein is outdated so perhaps other nautilus species have since been discovered in the Del Rio Clay. 

 

NAUTILOIDS AND AMMONITES FROM RAYZOR RANCH, DENTON, DENTON CO, TX.

 

Waco Lake Texas Trip For Forum Members

 

LAKE WACO SHALE PIT

 

 

[Uncle Siphuncle]

3 hours ago, PFOOLEY said:

@Uncle Siphuncle, I read in another thread of your Nautiloid specimens...would you have any from the Grayson Marl or Del Rio Clay?

Yeah.  There is one sitting unprepped on my garage floor at the moment from the Grayson, Cymatoceras, I believe.  Want it?

[PFOOLEY]

Pseudocenoceras largilliertianum

 

Angulithes fleuriausianus

 

Images from MUSÉUM NATIONAL D’HISTOIRE NATURELLE

[fossisle]

WOW great find!!!

[dre464]

Wow...just, wow...