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So I went back to Sharktooth to dig on Saturday. My friend wanted to go, since she didn't go last time, so I took the second trip. My friend found a nice number of shark teeth, on particularly nice Mako-like tooth with complete root, as well as some other nice ones. She did quite well, with a significantly better tooth count than I had. She was working new holes, while I worked a place that had started producing decent teeth a couple of weeks ago, including a cetacean partial tooth. Out of that hole came this interesting specimen. I was thinking allodesmus, but it would seem to be a large one. A nice guy digging out there, named Tim, said that he thought it may be something more like a desmostylus. What say our resident, as well as transient, experts? Many thanks ahead of time.

I may have posted some of these years ago but here are four nice specimens from Bakersfield not the Ernst quarries and Harts park area. The make is a hair over 3 inches and very wide, the plants comes from the " fire zone" area of Harts park, the cow shark tooth is nice and clean and the Juvenile Desmostylus was from my last Ernst quarry digs. Most of my collection is back in Texas but I have these and a few others with me.

Found these 6 months ago on central oregon coast and haven't been able to ID. A buddy came over for thanksgiving and texted some pics around to other folks. Best answer came this morning as desmostylus teeth. I never would have thought teeth, they seem more like a coral or sea anemone to my untrained eye. Looking at pictures of desmo teeth, they are mostly smaller and heavily warn down. If these are teeth, were they unused/ or unemerged from the jaw like adult teeth replacing a baby tooth? Ill put up some more pics, and any info/ confirmation is appreciated. Thanks!

Unusual extinct, surf zone "hippopotomus" single tooth. each composed of many enamel columns upper and lower I c

Billfish, Cetothere

I thought I'd post a couple shots of my haul from this last months museum dig down in Bakersfield, California. It was a decent trip, even with the last day being cut short by rain. I found over 130 perfect makos, plus a few interesting mammal teeth. I found an upper and lower Alodesmus canine, both of which are decent sized, as well as large Desmostylus molar. Unfortunately, I destroyed what was once one of the largest makos I've ever come across. At the end of the first day I took a couple last pokes with the shovel and just blasted this 3 1/8" hastalis. Really bummed me out, but thats just the nature of hunting teeth. There is always that slight risk of destroying a truly magnificent specimen, and it finally happened to me. Joe

These are a few of the pdf files (and a few Microsoft Word documents) that I've accumulated in my web browsing. MOST of these are hyperlinked to their source. If you want one that is not hyperlinked or if the link isn't working, e-mail me at joegallo1954@gmail.com and I'll be happy to send it to you. Please note that this list will be updated continuously as I find more available resources. All of these files are freely available on the Internet so there should be no copyright issues. Articles with author names in RED are new additions since May 25, 2018. Order Desmostylia (†) Family Desmostylidae Beatty, B.L. (2006). Rediscovered specimens of Cornwallius (Mammalia, Desmostylia) from Vancouver Island, British Columbia, Canada. PalArch, Vertebrate Paleontology, 1, 1. Chiba, K., et al. (2016). A new desmostylian mammal from Unalaska (USA) and the robust Sanjussen jaw from Hokkaido (Japan), with comments on feeding in derived desmostylids. Historical Biology, Vol.28, Numbers 1-2. Clementz, M.T., K.A. Hoppe and P.L. Koch (2003). A paleoecological paradox: the habitat and dietary preferences of the extinct tethythere Desmostylus, inferred from stable isotope analysis. Paleobiology, 29(4). Desmostylus Research Committee (1951). The Second Skeleton of Desmostylus in Gifu Profecture. Journal of the Geological Society of Japan, 57(672). Domning, D.P., C.E. Ray and M.C. McKenna (1986). Two New Oligocene Desmostylians and a Discussion of Tethytherian Systematics. Smithsonian Contributions to Paleobiology, Number 59. Gingerich, P.D. (2005). Aquatic Adaptation and Swimming Mode Inferred from Skeletal Proportions in the Miocene Desmostylian Desmostylus. Journal of Mammalian Evolution, Vol.12, Numbers 1/2. Hannibal, H. (1922). Notes on Tertiary Sirenians of the Genus Desmostylus. Journal of Mammalogy, 3. Hasegawa, Y. and N. Kohno (2007). Case 3384. Cornwallius tabatai Tokunaga, 1939 (currently Paleoparadoxia tabatai; Mammalia, Desmostylia): proposed conservation of usage of the specific name by designation of a neotype. Bulletin of Zoological Nomenclature, 64(2). Hay, O.P. (1915). A Contribution to the Knowledge of the Extinct Sirenian Desmostylus hesperus Marsh. Proceedings of the United States National Museum, Vol.49, Number 2113. Ijiri, S. and T. Kamei (1961). On the skulls of Desmostylus mirabilis Nagao from South Sakhalin and of Paleoparadoxia tabatai (Tokunaga) from Gifu Prefecture, Japan. (English text begins on page 25 of the pdf file) Iwahori, S. (1951). On the Horizon of Desmostylus in the Toki Basin, Gifu-Ken. Journal of the Geological Society of Japan, 57(672). Kaseno, Y. (1964). A Tooth of Desmostylus Found at Shiratori, Southern Noto, Japan. Ann.Rep. Noto Mar.Lab., Vol.4. Marsh, O.C. (1888). Article VII. Notice of a New Fossil Sirenian from California. Matsumoto, H. (1918). A Contribution to the Morphology, Palaeobiology and Systematics of Desmostylus. Nagao, T. (1937). 33. A New Occurrence of a Small Desmostylus Tooth in Hokkaido. Proceedings of the Imperial Academy, Vol.13, Number 4. Nagao, T. (1937). 24. Desmostylella, A New Genus of Desmostylidae from Japan. Proceedings of the Imperial Academy, Vol.13, Number 3. Nagao, T. (1937). 14. A New Species of Desmostylus from Japanese Saghalien and Its Geological Significance. Proceedings of the Imperial Academy, Vol.13, Number 2. Nagao, T. and S. Oishi (1935). Geographical Distribution of Desmostylus. Journal of Geological Society of Japan, 42(497). Santos, G.-P., J.F. Parham and B.L. Beatty (2016). New Data on the Ontogeny and Senescence of Desmostylus (Desmostylia, Mammalia). Journal of Vertebrate Paleontology, e1078344. Tomida, Y. and T. Ohta (2007). Discovery of a Desmostylian Tooth from Kitami City, Northeastern Hokkaido, Japan. Memoir of the Fukui Prefectural Dinosaur Museum, 6. Uno, H. and M. Kimura (2004). Reinterpretation of some cranial structures of Desmostylus hesperus (Mammalia: Desmostylia): a new specimen from the Middle Miocene Tachikaraushinai Formation, Hokkaido, Japan. Paleontological Research, Vol.8, Number 1. Family Paleoparadoxiidae Barnes, L.G. (2013). A New Genus and Species of Late Miocene Paleoparadoxiid (Mammalia, Desmostylia) from California. Natural History Museum of Los Angeles County, Contributions in Science, 521. Ijiri, S. and T. Kamei (1961). On the skulls of Desmostylus mirabilis Nagao from South Sakhalin and of Paleoparadoxia tabatai (Tokunaga) from Gifu Prefecture, Japan. (English text begins on page 25 of the pdf file) Kobayashi, I. and T. Kamei (1973). A Histological Study on a Tooth of Paleoparadoxia. Memoirs of the Faculty of Science, Kyoto University, Series of Geol. & Mineral., Vol.XL, Number 1. Panofsky, A.I. (1998). Stanford Paleoparadoxia Fossil Skeleton Mounting. SLAC-PUB-7829. Suzuki, K. and T. Yamamoto (2010). Histological Observation of Paleoparadoxia Incisor from the Noto Peninsula, Japan. Int.J. Oral-Med.Sci., 9(2). General Desmostylia Domning, D.P. The Terrestrial Posture of Desmostylians. Smithsonian Contributions to Paleobiology, Number 93. Hayashi, S., et al. (2013). Bone Inner Structure Suggests Increasing Aquatic Adaptations in Desmostylia (Mammalia, Afrotheria). PLoS ONE, 8(4). Inuzuka, N. (2000). Preliminary Report on the Evolution of Aquatic Adaptation in Desmostylians (Mammalia, Tethytheria). Oryctos, Vol.3. Inuzuka, N. (1996). Body size and mass estimates of desmostylians (Mammalia). Journal of the Geological Society of Japan, 102(9). Matsui, K. (2017). How can we reliably identify a taxon based on humeral morphology? Comparative morphology of desmostylian humeri. PeerJ, 5:e4011. Mitchell, E.D. and C.A. Repenning (1963). The Chronologic and Geographic Range of Desmostylians. Los Angeles County Museum - Contributions in Science, Number 78. Novacek, M.J. and A.R. Wyss (1987). Selected Features of the Desmostylian Skeleton and Their Phylogenetic Implications. American Museum Novitates, Number 2870. Reinhart, R.H. (1976). Fossil Sirenians and Desmostylids from Florida and Elsewhere. Bulletin of the Florida Museum of Natural History, Vol.20, Number 4. Shikama, T. (1966). Postcranial Skeletons of Japanese Desmostylia. Palaeontological Society of Japan, Special Papers Number 12. Shimada, K. and N. Inuzuka (1994). 975. Desmostylian Tooth Remains from the Miocene Tokigawa Group at Kuzubukuro, Saitama, Japan. Trans.Proc.Palaeont.Soc. Japan, N.S., Number 175.