About this site and the author

This site is meant to be a reference to help provide information on the identity, biostratigraphy and location of fossil cephalopods found in the state of Utah.  All fossils shown on this site were collected, or photographed in the field, by the author.  They were all found on public land, administered by either the Bureau of Land Management (BLM) or the United States Forest Service (USFS). Or land formerly administered by the BLM that is now property of the State of Utah.

Fossils shown on this site are NOT for sale or trade.  I am not against the selling and trading of fossils, it's just that I choose not to participate, and abide the law.  For rules pertaining to fossil collecting in Utah, see collecting rules at this UGS site.

There is no copyright on any of the pages or photographs, except for logos, photographs, or names, owned by other sites.  It would be nice however, if you use some of my photographs, to mention where they come from, and link back to this site.

This site is owned and maintained by Kevin Bylund, shown below in the desert of western Utah collecting fossil cephalopods.  I am an amateur paleontologist with an interest in cephalopods and cephalopod biostratigraphy, and sometimes an avocational paleontologist helping local universities and surveys in some of their dinosaur quarries.  A member of the Paleontological Society, the Palaeontological Association, and the Utah Friends of Paleontology.

  Me

Comments, Questions, Suggestions
Email
kevin at ammonoid dot com

Ammonoidea (my blog site)

Papers:

Brayard, A., Bylund, K. G., Jenks, J., Stephen, D. A., Olivier, N., Escarguel, G., Fara, E. & Vennin, E. (in Press). Smithian ammonoid faunas from Utah: implications for Early Triassic biostratigraphy, correlations and basinal paleogeography. Swiss Journal of Paleontology.


Daniel A. Stephen, Kevin G. Bylund, Patricia Garcia, R. Dawn McShinsky, Holley Jean Carter, 2012, Taphonomy of dense concentrations of juvenile ammonoids in the Upper Cretaceous Mancos Shale, east-central Utah, USA. Geobios 45(1):121-128. 

Arnaud Brayard, Emmanuelle Vennin, Nicolas Olivier, Kevin G. Bylund, Jim Jenks, Daniel A. Stephen, Hugo Bucher, Richard Hofmann, Nicolas Goudemand & Gilles Escarguel, 2011, Transient metazoan reefs in the aftermath of the end-Permian mass extinction, Nature Geoscience, Vol. 4, no. 10. See the Science Daily story

Arnaud Brayard, Alexander Nützel, Andrzej Kaim, Gilles Escarguel, Michael Hautmann, Daniel A. Stephen, Kevin G. Bylund, Jim Jenks, and Hugo Bucher, 2011, Gastropod evidence against the Early Triassic Lilliput effect: REPLY Geology,  v. 39, p. e233


Arnaud Brayard, Alexander Nützel, Daniel A. Stephen, Kevin G. Bylund, Jim Jenks, and Hugo Bucher, 2010, Gastropod evidence against the Early Triassic Lilliput effect, Geology , v. 38, no. 2, p. 147-150See the story on Science Daily

Daniel A. Stephen, Kevin G. Bylund, Paul J. Bybee and Wesley J. Ream, 2010, Ammonoid Beds in the Lower Triassic Thaynes Formation of western Utah, USA, in: Cephalopods – Present and Past, edited by K. Tanabe, Y. Shigeta  and T. Sasaki & H. Hirano. Tokai University Press, Tokyo, p. 243-252

Pisera, Andrzej, Rigby, J. Keith and Bylund, Kevin, 1996, Lower Triassic Hexactinellid Sponges from the Confusion Range, Western Utah: Brigham Young University Geology Studies, vol. 27, pt 2  Download a copy Here



Pictures of ammonoids I have collected have been published in:

Hintze, L. F., and Davis, F. D., 2003, Geology of Millard County, Utah: Utah Geological Survey Bulletin 133

Hintze, L. F., 2005, Utah's Spectacular Geology: How It Came to Be: BYU Print Services

Colin Dunlop and Nancy King, , 2008, Cephalopods: Octopuses and Cuttlefish for the Home Aquarium, TFH Publications

Hintze, L. F., and Kowallis, B. J., 2009, Geologic History of Utah: BYU Geology Studies, Special Publication 9



Abstracts:

D.A. STEPHEN, K.G. BYLUND, H.J. CARTER, P. GARCIA, 2010, Taphonomy of dense concentrations of juvenile ammonoids in the Mancos Shale, east-central Utah, USA, 8th International Symposium, Cephalopods – Present and Past (Dijon – France 2010), Oral presentation, Abstract volume.

K.G. BYLUND & D.A. STEPHEN, 2010, Coniacian (Late Cretaceous) ammonoid fauna of eastern Utah, USA, 8th International Symposium, Cephalopods – Present and Past (Dijon – France 2010) Poster Abstract volume.

K.G. BYLUND, D.A. STEPHEN, A. BRAYARD, H. BUCHER, J. JENKS, R.D. McSHINSKY, 2010, Early Triassic ammonoids from the Pahvant Range, Utah, USA, 8th International Symposium, Cephalopods – Present and Past (Dijon – France 2010) Poster Abstract volume.

D.A. STEPHEN & K.G. BYLUND, 2010, Late Cretaceous nautiloids from eastern Utah, USA, 8th International Symposium, Cephalopods – Present and Past (Dijon – France 2010) Poster Abstract volume.

Daniel A. Stephen, Kevin G. Bylund, Arnaud Brayard, and Hugo Bucher, 2009,
LOWER TRIASSIC AMMONOID BIOSTRATIGRAPHY OF CENTRAL AND WESTERN UTAH, 9th North American Paleontological Convention, June 21-26, 2009, Cincinatti, Ohio.

STEPHEN, Daniel A., MENLOVE, Lara, GOUDEMAND, Nicolas, BYLUND, Kevin G., BRAYARD, Arnaud, McSHINSKY, RaNae Dawn, BUCHER, Hugo, and JENKS, Jim, 2009: EARLY TRIASSIC CONODONTS IN THE PAHVANT RANGE OF CENTRAL UTAH: Abstracts with Programs, Vol. 41, No. 6 Geological Society of America, Rocky Mountain Section (61st Annual) Meeting (11–13 May 2009)

BYLUND, Kevin G., STEPHEN, Daniel A., BRAYARD, Arnaud, BUCHER, Hugo, JENKS, Jim, and McSHINSKY, RaNae Dawn, 2009: AMMONOIDS OF THE LOWER TRIASSIC THAYNES GROUP IN THE PAHVANT RANGE, UTAH: Geological Society of America Abstracts with Programs, Vol. 41, No. 6, Rocky Mountain Section (61st Annual) Meeting (11–13 May 2009)

Dan Stephen, Kevin Bylund, Paul Bybee and Wes Ream, 2008, LOWER TRIASSIC AMMONOID BEDS IN THE CONFUSION RANGE OF WESTERN UTAH: Geological Society of America  Abstracts with Programs, Vol. 40, No. 1, Cordilleran Section (104th Annual) and Rocky Mountain Section (60th Annual) Joint Meeting (19–21 March 2008),  pg. 59
(be sure to download a copy (4.8M pdf) of the presentation I gave "presentation handout"

Dan Stephen, Kevin Bylund, Paul Bybee and Wes Ream, 2007, AMMONOID MASS MORTALITY BEDS IN THE LOWER TRIASSIC THAYNES FORMATION OF WESTERN UTAH, USA: Seventh International Symposium Cephalopods – Present and Past, 2007, Sapporo, Japan. Abstracts of Oral Presentations, pg. 33


Acknowledgements:

Lehi Hintze
Dr. Lehi Hintze leading a field trip into the Ibex Area of  Utah's West Desert
(Site of Jack Watson's Ibex ranch and P.O. in background)
2004

Dr. Hintze has helped with many fossil localities in Western Utah, particularly the Ordovician sections


Dr. Morris Petersen and Jared Morrow
Dr. Morris Petersen and Jared Morrow
at a site for Early Mississippian Ammonoids
2004

Dr. Petersen showed me where the Deseret Limestone ammonoids are found.

Duane
Duane, my brother, in the southern House Range
2004

Many of the cephalopods pictured on this site were found by him

Dr. Dan Stephan
Dr. Dan Stephen at an outcrop of the Triassic Thaynes Formation
The Anasibirites Beds
2007

Dan has been instrumental in getting the study of the Anasibirites Beds on paper.

Dieter Korn and Alan Titus
Dr's Dieter Korn and Alan Titus
at Granite Mountain collecting Mississippian ammonoids
2007

I learned a great deal from these two during the 4 days spent collecting in western Utah and eastern Nevada, and Alan has helped considerably with the taxonomy and biostratigraphy of Mississippian ammonoids.

dawn

Dawn McShinsky has helped measure sections and collect ammonoids
2008

ammoworkers

Dr. Hugo Bucher, Dr. Arnaud Brayard, and Jim Jenks
Together we are working on the Early Triassic Ammonoids of Western and Central Utah.
2008

Jim Jean Viorel

Jim, Jean Guex, Viorel Atudorei
Working on some Spathian Ammonoids in the Confusion Range
2009


laraHolley
Lara Menlove and Holley Jean Carter
Collecting Early Triassic Ammonoids
2009

Patti
Patti Garcia
Helping with the Cretaceous Ammonites and making thin sections
2010

monograph authors

Emmanuelle Vennin, Gilles Escarguel, Daniel A. Stephen, Arnaud Brayard, Emmanuel Fara, Nicolas Olivier, and James F. Jenks

The Utah Early Triassic Crew
2013


This site was started in December 1999, and first published on the world wide web as Old Calamari with Xoom.com in February 2000.  Later Xoom.com changed to NBCI.com, after a few years they stopped offering free web space so I moved the site to Topcities.com, only to have them shut down.  On October 2, 2003, I registered the domain ammonoid.com, where the site is now.


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