PBDB Collection

OMNH V695, Mussentuchit: Early/Lower Cenomanian, Utah

List of taxa

Where & when

Geology

Taphonomy & methods

Metadata & references

Taxonomic list

unclassified

	Actinopterygii indet. (Cope 1887)	Cifelli et al. 1999
	OMNH 30173
Amphibia - Temnospondyli - Albanerpetontidae

	Albanerpetontidae indet. Fox and Naylor 1982	Gardner 1999	7 specimens
	OMNH 27375, 26802, 26738, 26739, 26803, 27378, 27409

	Albanerpeton cf. nexuosus Estes 1981	Gardner 1999	1 specimen
	OMNH 27413
Amphibia - Temnospondyli - Urodela

	Scapherpetontidae indet. (Auffenberg and Goin 1959)	Cifelli et al. 1999
	orig. Batrachosauroididae; OMNH 27130, 27394, 27401, 27888, 28086
Amphibia - Temnospondyli

	Anura indet. (Fischer von Waldheim 1813)	Cifelli et al. 1999
	many specimens include articulated individuals
Reptilia

	Necrosauridae indet. Hoffstetter 1943	Cifelli and Nydam 1995	1 specimen
	platynotan lizard; OMNH 26742
	= Primaderma nessovi n. gen., n. sp. Nydam 2000	Nydam 2000

	Scincomorpha indet. Camp 1923	Nydam 2002

	Bothriagenys mysterion n. gen., n. sp. Nydam 2002	Nydam 2002	1 specimen
	scincomorph lizard; OMNH 28119
Reptilia - Polyglyphanodontidae

	Teiidae indet. Gray 1827	Cifelli et al. 1999	1 specimen
	OMNH 26743
	= Bicuspidon numerosus n. gen., n. sp. Nydam and Cifelli 2002	Nydam and Cifelli 2002
Reptilia

	Coniophis sp. Marsh 1892	Gardner and Cifelli 1999	1 specimen
	nomen dubium belonging to Serpentes
	OMNH 33250 (dorsal vertebra)
Reptilia - Teiidae

	Teiidae indet. Gray 1827	Cifelli et al. 1999	1 specimen
	OMNH 28067
	= Harmodontosaurus emeryensis Nydam 2002	Nydam 2002
Reptilia - Paramacellodidae

	Scincidae indet. Gray 1825	Cifelli et al. 1999	1 specimen
	OMNH 27711
	= cf. Pseudosaurillus sp. Hoffstetter 1967	Nydam 2002
	paramacellodid lizard
	= Hypostylos sp. Wick and Shiller 2020	Wick and Shiller 2020
Reptilia

	Dimekodontosaurus madseni n. gen., n. sp. Nydam 2002	Nydam 2002	1 specimen
	scincoid lizard; OMNH 34560

	Theropoda informal indet. 1 (Marsh 1881)	Frederickson et al. 2018	11 specimens
	teeth, morphotype 1

	Theropoda informal indet. 2 (Marsh 1881)	Frederickson et al. 2018	12 specimens
	teeth, morphotype 2

	Theropoda informal indet. 3 (Marsh 1881)	Frederickson et al. 2018	10 specimens
	teeth, morphotype 3
Reptilia - Dromaeosauridae

	Richardoestesia sp. Currie et al. 1990	Frederickson et al. 2018	6 specimens
	teeth, morphotype 4
Reptilia

	Neoceratopsia indet. Sereno 1986	Chinnery et al. 1998	1 specimen
Reptilia - Goniopholididae

	Goniopholididae indet. Cope 1875	Frederickson et al. 2018	10 specimens
	teeth
Mammalia - Eutriconodonta - Triconodontidae

	Triconodonta indet. Osborn 1888
	= Jugulator amplissimus Cifelli and Madsen 1998	Cifelli and Madsen 1998

	Triconodonta indet. Osborn 1888
	= Corviconodon utahensis Cifelli and Madsen 1998	Cifelli and Madsen 1998

	Triconodonta indet. Osborn 1888
	= Astroconodon delicatus Cifelli and Madsen 1998	Cifelli and Madsen 1998
	"A. n sp." of Kirkland et al. 1997
Mammalia - Spalacotheriidae

	Spalacotheriidae indet. Marsh 1887	Cifelli and Madsen 1999

	Symmetrodonta indet. Simpson 1925
	= Spalacotheridium noblei Cifelli and Madsen 1999	Cifelli 1999
	(in part); "S. n. sp." of Kirkland et al. 1997

	Symmetrodonta indet. Simpson 1925
	= Spalacolestes cretulablatta Cifelli and Madsen 1999	Cifelli 1999
	(in part;) "Spalacotheroides sp." of Kirkland et al. 1997
Mammalia

	Tribosphenida indet. McKenna 1975	Cifelli et al. 2016	3 specimens
	OMNH 26729, 30532, 33238

	Tribotheria indet. Butler 1978		4 specimens
	= Dakotadens pertritus n. sp. Cifelli et al. 2016	Cifelli et al. 2016
	OMNH 33247, 27544, 26731, 27509

	Kokopellia juddi n. gen., n. sp. Cifelli 1993		1 individual
	OMNH 26361

	Sinbadelphys schmidti Cifelli 2004	Cifelli 2004

	Culicolestes kielanae Cifelli et al. 2016	Cifelli et al. 2016	1 specimen
	OMNH 26727
Mammalia - Multituberculata

	cf. Janumys erebros	Eaton and Cifelli 2001	2 specimens
	P4: OMNH 26640,29573

	Janumys erebos n. gen., n. sp. Eaton and Cifelli 2001	Eaton and Cifelli 2001	17 specimens
	OMNH 26623 (holotype M1); referred m1: OMNH 27434,27435,27455,27499,29586,29591,33172, 33175,33183,33184,34019; m2: 33160; MI: 26619, 27565,29589,33173
Mammalia - Multituberculata - Plagiaulacidae

	Multituberculata indet. Cope 1884		1 specimen
	= ? Plagiaulacidae indet. Gill 1872	Eaton and Cifelli 2001
	p4: OMNH 33163
Mammalia - Multituberculata

	Cedaromys bestia (Eaton and Nelson 1991)	Eaton and Cifelli 2001	18 specimens
	lower incisors, OMNH 28505, 28512; p4, 26636, 29582; m1, 26617 (partial); 26620, 26622 (partial), 27498, 29587, 33178; m2, 33186; P4, 30634, 33159; M1, 27564, 33178, 33180; M2, 27538,29576

	Cedaromys parvus Eaton and Cifelli 2001	Eaton and Cifelli 2001	9 specimens
	p4, OMNH 27497; m1, 26628,26683,29583,30633; m2, 26627; M1, 33185; M2, 26678; including tentatively referred P4 (OMNH 33161)

	cf. Paracimexomys perplexus Eaton and Cifelli 2001	Eaton and Cifelli 2001
	m1: OMNH 26615, 26616, 29592, 29594, 29596, 33176, 33179, 33181; P4, 26642; M1, 26624, 26674, 27450, 27451, 27516, 27517, 29574; including one tentatively referred M2 (27561)

	Bryceomys intermedius Eaton and Cifelli 2001	Eaton and Cifelli 2001	9 specimens
	m1, OMNH 33174; m2, 26626,26632,33190,33192; M1, 27553; M2, 26679,27453; including tentatively referred m2 (OMNH 26579)
Mammalia - Multituberculata - Neoplagiaulacidae

	? Mesodma sp. Jepsen 1940	Eaton and Cifelli 2001	1 specimen
	p4, OMNH 27563
Mammalia - Multituberculata

	Ameribaatar zofiae Eaton and Cifelli 2001	Eaton and Cifelli 2001	2 specimens
	m2, OMNH 33167; M1, 33177 (partial); M2, 33165;
see common names

Geography

Country:	United States	State/province:	Utah	County:	Emery
Coordinates:	38.7° North, 111.2° West (view map)
Paleocoordinates:	40.0° North, 73.4° West
Basis of coordinate:	based on political unit
Geographic resolution:	small collection

Time

Period:	Cretaceous	Epoch:	Late/Upper Cretaceous
Stage:	Cenomanian	10 m.y. bin:	Cretaceous 5
Key time interval:	Early/Lower Cenomanian
Age range of interval:	100.50000 - 93.90000 m.y. ago

Stratigraphy

Geological group:	Dakota	Formation:	Cedar Mountain	Member:	Mussentuchit
Local section:	Kaipa	Local bed:	1
Local order:	bottom to top
Stratigraphic resolution:	bed
Stratigraphy comments: 19 m below overlying Naturita Fm. A radiometric age of 98.37 ± 0.07 Ma was obtained by the OMNH from volcanic ash within the Mussentuchit Member (Cifelli and others, 1997, 1999). Additional ages by Garrison and others (2007) ranging from 96.7 ± 0.5 to 98.2 ±0.6 Ma indicate that the Mussentuchit Member was deposited over an interval of 1.5 Ma during the early Cenomanian and supports a correlation with the siliceous marine Mowry Shale to the north, which is well-constrained from 40Ar/39Ar sanidine ages obtained from bentonite beds that bracket the Mowry in Wyoming; the basal Arrow Creek Bentonite is 98.5 ± 0.5 Ma and the capping Clay Spur Bentonite is 97.2 ± 0.7 Ma (Obradovich, 1993; Ogg and Hinnov, 2012; Sprinkel and others, 2012) near the base of the Upper Cretaceous. Tucker et al. 2020 also suggested a likely depositional age of ~96-94Ma for the Musseuntuchit member.

Lithology and environment

Primary lithology:	"cross stratification" sandstone
Includes fossils?	Y
Environment:	"floodplain"

Taphonomy

Modes of preservation:	body
Size of fossils:	macrofossils,mesofossils
Disassociated major elements:	some
Disassociated minor elements:	some

Collection methods and comments

Collection excludes:	some genera
Collection methods:	bulk,field collection
Reason for describing collection:	general faunal/floral analysis
Taxonomic list comments:upper member of fm.new locality presumably not known to Eaton and Nelson 1991see map of Cifelli and Madsen 1998dated ash of Cifelli et al. 1997 is directly associated with this locality: Cifelli et al. 1999

Metadata

Database number:	14396
Authorizer:	J. Alroy, R. Benson, M. Carrano, P. Mannion	Enterer:	J. Alroy, P. Mannion, M. Carrano, R. Benson
Modifier:	M. Carrano	Research group:	vertebrate
Created:	1998-09-21 00:00:00	Last modified:	2023-08-21 15:42:32
Access level:	the public	Released:	1998-09-21 00:00:00
Creative Commons license:	CC BY

Reference information

Primary reference:

1210.

R. L. Cifelli. 1993. Early Cretaceous mammal from North America and the evolution of marsupial dental characters. Proceedings of the National Academy of Sciences, USA 90(20):9413-9416 [J. Alroy/J. Alroy/M. Carrano]

Secondary references:

14087	ETE	B. J. Chinnery, T. R. Lipka, J. I. Kirkland, J. M. Parrish, and M. K. Brett-Surman. 1998. Neoceratopsian teeth from the Lower to Middle Cretaceous of North America. In S. G. Lucas, J. I. Kirkland, J. W. Estep (eds.), Lower and Middle Cretaceous Terrestrial Ecosystems, New Mexico Museum of Natural History and Science Bulletin 14:297-302 [M. Carrano/M. Carrano/M. Carrano]
1213		R. L. Cifelli. 1999. Therian teeth of unusual design from the mid-Cretaceous (Albian–Cenomanian) Cedar Mountain Formation of Utah. Journal of Mammalian Evolution 6(3):247-270 [J. Alroy/J. Alroy/M. Carrano]
39671		R. L. Cifelli. 2004. Chapter 5: Marsupial Mammals from the Albian–Cenomanian (Early–Late Cretaceous) Boundary, Utah. Bulletin of the American Museum of Natural History 285:62-79 [R. Benson/R. Benson]
60386		R. L. Cifelli, J. E. Cohen, and B. M. Davis. 2016. New tribosphenic mammals from the Mussentuchit Local Fauna (Cedar Mountain Formation, Cenomanian), Utah, USA. Palaeontologia Polonica 67:67-81 [M. Carrano/M. Carrano]
1223		R. L. Cifelli and S. K. Madsen. 1998. Triconodont mammals from the medial Cretaceous of Utah. Journal of Vertebrate Paleontology 18(2):403-411 [J. Alroy/J. Alroy/M. Carrano]
1224		R. L. Cifelli and S. K. Madsen. 1999. Spalacotheriid symmetrodonts (Mammalia) from the medial Cretaceous (upper Albian or lower Cenomanian) Mussentuchit local fauna, Cedar Mountain Formation, Utah, USA. Geodiversitas 21(2):167-214 [J. Alroy/J. Alroy/M. Carrano]
7575		R. L. Cifelli and R. L. Nydam. 1995. Primitive, helodermatid-like platynotan from the Early Cretaceous of Utah. Herpetologica 51(3):286-291 [J. Alroy/J. Alroy/J. Alroy]
1227		R. L. Cifelli, R. L. Nydam, J. D. Gardner, A. Weil, J. G. Eaton, J. I. Kirkland, and S. K. Madsen. 1999. Medial Cretaceous vertebrates from the Cedar Mountain Formation, Emery County, Utah: the Mussentuchit local fauna. In D. D. Gillette (ed.), Vertebrate Paleontology in Utah. Utah Geological Survey Miscellaneous Publication 99-1:219-242 [J. Alroy/J. Alroy/M. Carrano]
6099		J. G. Eaton and R. L. Cifelli. 2001. Multituberculate mammals from near the Early-Late Cretaceous boundary, Cedar Mountain Formation, Utah. Acta Palaeontologica Polonica 46(4):453-518 [J. Alroy/J. Alroy/M. Carrano]
70607		J. A. Frederickson, M. H. Engel, and R. L. Cifelli. 2018. Niche partitioning in theropod dinosaurs: diet and habitat preference in predators from the uppermost Cedar Mountain Formation (Utah, U.S.A.). Scientific Reports 8(1):17872:1-13 [M. Carrano/M. Carrano]
6845		J. D. Gardner. 1999. New albanerpetontid amphibians from the Albian to Coniacian of Utah, USA—bridging the gap. Journal of Vertebrate Paleontology 19(4):632-638 [J. Alroy/J. Alroy/M. Carrano]
37785		J. D. Gardner and R. L. Cifelli. 1999. A primitive snake from the Cretaceous of Utah. In D. M. Unwin (ed.), Cretaceous Fossil Vertebrates. Special Papers in Palaeontology 60:87-100 [R. Benson/R. Benson/M. Carrano]
14365		Z. Kielan-Jaworowska, R. L. Cifelli, and Z.-X. Luo. 2004. Mammals from the age of dinosaurs: Origins, evolution, and structure. Columbia University Press, New York 1-630 [R. Whatley/R. Whatley/R. Whatley]
6833		R. L. Nydam. 2000. A new taxon of helodermatid-like lizard from the Albian-Cenomanian of Utah. Journal of Vertebrate Paleontology 20(2):285-294 [J. Alroy/J. Alroy/J. Alroy]
7277		R. L. Nydam. 2002. Lizards of the Mussentuchit Local Fauna (Albian-Cenomanian boundary) and comments on the evolution of the Cretaceous lizard fauna of North America. Journal of Vertebrate Paleontology 22(3):645-660 [J. Alroy/J. Alroy/J. Alroy]
6714		R. L. Nydam and R. L. Cifelli. 2002. A new teiid lizard from the Cedar Mountain Formation (Albian-Cenomanian boundary) of Utah. Journal of Vertebrate Paleontology 22(2):276-285 [J. Alroy/J. Alroy/J. Alroy]
72588		S. L. Wick and T. A. Shiller, II. 2020. New taxa among a remarkably diverse assemblage of fossil squamates from the Aguja formation (lower Campanian) of west Texas. Cretaceous Research 114:104516:1-27 [P. Mannion/P. Mannion/M. Carrano]