Smoky Hollow Member (OMNH V4) (Cretaceous of the United States)

Also known as MNA 1003-1

Where: Garfield County, Utah (37.8° N, 111.5° W: paleocoordinates 41.2° N, 76.9° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Smoky Hollow Member (Straight Cliffs Formation), Late/Upper Turonian (93.5 - 89.3 Ma)

• said to be Turonian

• bed-level stratigraphic resolution

Environment/lithology: fluvial-lacustrine; green claystone

• "either a low energy fluvial or pond environment"

Size class: mesofossils

Collection methods: bulk, sieve,

Primary reference: J. G. Eaton and R. L. Cifelli. 1988. Preliminary report on Late Cretaceous mammals of the Kaiparowits Plateau, southern Utah. Contributions to Geology, University of Wyoming 26(2):45-55 [J. Alroy/J. Alroy/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 14415: authorized by John Alroy, entered by John Alroy on 21.09.1998, edited by Matthew Carrano and Patricia Holroyd

Creative Commons license: CC BY (attribution)

Taxonomic list

• original list of Eaton and Cifelli 1988 is entirely from this locality. Identifications of Eaton et al. 1999 for the "Smoky Hollow Member," exact provenance unclear: Picopsis sp. Dakotadens sp. "Alphadon sp." Protalphadon sp.
Amphibia
 Proteida - Batrachosauroididae
Batrachosauroididae "Gen. et sp. nov. 2"4 Auffenberg 1958 salamander
OMNH 67073 (= Batrachosauroididae indet. sp. B)
 Temnospondyli - Albanerpetontidae
Albanerpetontidae indet.3 Fox and Naylor 1982 tetrapod
OMNH 25403, 25391, 25393, 23706, 25397, 25399
Albanerpeton cifellii n. sp.3 Gardner 1999 tetrapod
OMNH 25400
Reptilia
 Ornithischia - Nodosauridae
Nodosauridae indet.6 Marsh 1890 ankylosaur
OMNH 21711, 24448
 Ornithischia - Ankylosauridae
Ankylosauridae indet.6 Brown 1908 ankylosaurid
OMNH 23681
 Ornithischia -
cf. Thescelosaurus sp.6 Gilmore 1913 ornithopod
OMNH 21512, 24313, 25418
 Ornithischia - Hadrosauridae
Hadrosauridae indet.6 Cope 1869 hadrosaurid
OMNH 21492, 25427, 21506, 21508, 21510, 20862, 23710, 23863, 23863, 23697, 24443–24447
 Theropoda -
cf. Paronychodon sp.6 Cope 1876 maniraptoran
OMNH 24451, 25415
 Theropoda - Dromaeosauridae
Velociraptorinae indet.6 Barsbold 1983 maniraptoran
OMNH 24439, 24441, 24442
Dromaeosaurinae indet.6 Matthew and Brown 1922 maniraptoran
OMNH 23712, 25422, 24437, 24438, 25420
 Theropoda - Tyrannosauridae
Tyrannosauridae indet.6 Osborn 1906 tyrannosaurid
OMNH 24125, 24436
cf. Aublysodon sp.6 Leidy 1868 tyrannosaurid
OMNH 21518, 21524
 Squamata - Polyglyphanodontidae
Dicothodon cifellii5 Nydam et al. 2007 squamates
OMNH 23586
Mammalia
 Multituberculata -
Paracimexomys cf. robisoni2 Eaton and Nelson 1991 multituberculate
Bryceomys sp.2 Eaton 1995 multituberculate
Bryceomys hadrosus2 Eaton 1995 multituberculate
also in MNA 1003 collection
Bryceomys fumosus2 Eaton 1995 multituberculate
also in MNA 1003 collection
 Theriamorpha - Spalacotheriidae
Symmetrodontoides oligodontos1 Cifelli 1990 mammal
OMNH 20381
 Theriamorpha -
Theria "indet. A" Parker and Haswell 1897 mammal
OMNH 20030; possibly identifed as "Protalphadon sp." by Eaton et al. 1999
Theria "indet. B" Parker and Haswell 1897 mammal
OMNH 20032, 20036; possibly identifed as "Protalphadon sp." by Eaton et al. 1999
? Anchistodelphys delicatus n. sp.1 Cifelli 1990 metatherian
OMNH 20374-75, 20034
 Deltatheroida - Deltatheridiidae
? Deltatheridiidae indet. Gregory and Simpson 1926 metatherian
OMNH 20386; possibly identified as "Picopsis sp." by Eaton et al. 1999
 Marsupialia -
Marsupialia "indet. A"1 marsupial
OMNH 20029, 20373, 20016-17, 20020, 20380
Marsupialia "indet. B"1 marsupial
OMNH 20113