Cleveland-Lloyd Dinosaur Quarry (Jurassic of the United States)

Also known as CLDQ, Cleveland Quarry, Malcolm Lloyd Jr. Quarry, UT-7

Where: Emery County, Utah (39.3° N, 110.7° W: paleocoordinates 35.0° N, 56.3° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Brushy Basin Member (Morrison Formation), Kimmeridgian (157.3 - 152.1 Ma)

• lower part of member, ca. 38 m above basal contact

• bed-level stratigraphic resolution

Environment/lithology: pond; nodular, intraclastic, gray, calcareous mudstone and lime mudstone

• channel-top swale or oxbow pond in poorly drained floodplain/delta; overlain by lacustrine facies
• "a drab gray calcareous claystone...capped by a fossiliferous micritic limestone"; "a calcarous mudstone that...also includes abundant diagenetic limestone nodules and clay clasts."

Size classes: macrofossils, mesofossils, microfossils

Collected by Hintze & York; Stokes, Warner, Body & Jepsen; Madsen & Stokes in 1927, 1929–1931, 1939–1941, 1960–1967, 1975-1990, 2001–2002, 2012

Collection methods: core, quarrying, mechanical,

Primary reference: W. L. Stokes. 1944. Jurassic dinosaurs from Emery County, Utah. Proceedings of the Utah Academy of Sciences, Arts and Letters 21:11 [M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 46439: authorized by Matthew Carrano, entered by Matthew Carrano on 13.01.2005, edited by Kaitlin Maguire

Creative Commons license: CC BY (attribution)

Taxonomic list

Gastropoda
 Architaenioglossa - Viviparidae
Viviparus sp.4 Montfort 1810 snail
 Valvatoidea - Valvatidae
Amplovalvata sp.4 Yen 1952 snail
"freshwater mollusks"
Valvata sp.4 Müller 1774 snail
Reptilia
  -
Reptilia indet.16 Laurenti 1768 reptile
 Testudines - Pleurosternidae
Glyptops sp.14 Marsh 1890 turtle
 Dinosauria -
Dinosauria indet.7 dinosaur
eggshell
  - Prismatoolithidae
"Prismatoolithus coloradensis" = Preprismatoolithus coloradensis6
"Prismatoolithus coloradensis" = Preprismatoolithus coloradensis6 Hirsch 1994 dinosaur
11584/BYU-VP 12019/HEC 464, 488
 Saurischia - Diplodocidae
Barosaurus sp.4 Marsh 1890 diplodocine
Apatosaurus sp.5 Marsh 1877 diplodocid
posterior cervical vertebra
? Apatosaurus sp.9 Marsh 1877 diplodocid
 Saurischia - Camarasauridae
Camarasaurus sp.8 Cope 1877 camarasaurid
RTMP 83.35.03, to 83.35.06
Camarasaurus lentus8 Marsh 1889 camarasaurid
CEU 1694
Camarasaurus ? lentus8 Marsh 1889 camarasaurid
UUVP 1555, 1859, 1860, 1984, 3568, 3609, 4273, 4286, 4315, 5309, 6341, 10070, 11626, 10795, 22940
 Avetheropoda - Allosauridae
Allosaurus fragilis17 Marsh 1877 allosaurid
 Avetheropoda -
Coelurus fragilis1 Marsh 1879 coelurosaur
"(n. sp.?)"
Tanycolagreus topwilsoni2 Carpenter et al. 2005 coelurosaur
UUVP 2999/UMNH 7821
Stokesosaurus clevelandi n. gen. n. sp.12 Madsen 1974 coelurosaur
? Stokesosaurus clevelandi3 Madsen 1974 coelurosaur
UUVP 2455
 Saurischia - Piatnitzkysauridae
Marshosaurus bicentesimus n. gen. n. sp.13
Marshosaurus bicentesimus n. gen. n. sp.13 Madsen 1976 tetanuran
 Saurischia -
"Ceratosaurus dentisulcatus n. sp." = Ceratosaurus nasicornis11
"Ceratosaurus dentisulcatus n. sp." = Ceratosaurus nasicornis11 Marsh 1884 ceratosaur
 Ornithischia - Nodosauridae
"? Acanthopholidae indet." = Nodosauridae9
"? Acanthopholidae indet." = Nodosauridae9 Marsh 1890 ornithischian
"unknown sp. (probably assignable to Acanthopholidae)"
 Ornithischia - Stegosauridae
Stegosaurus sp.10 Marsh 1877 ornithischian
Stegosaurus cf. stenops15 Marsh 1887 ornithischian
 Neornithischia -
"Camptosaurus cf. browni" = Camptosaurus dispar15
"Camptosaurus cf. browni" = Camptosaurus dispar15 Marsh 1879 bird foot dinosaur
 Loricata - Goniopholididae
Goniopholis sp.9 Owen 1842 crocodilian
Charophyceae
 Charales - Characeae
Stellatochara
  -