North Quarry/Camp Quarry, Proctor Lake Dinosaur Locality (SMU 001): Late/Upper Aptian, Texas
collected by D. Winkler 1985
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia
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aff. Hypsilophodon sp.
Huxley 1870
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32 individuals | |||||||||
SMU 70444, 70445, 70456, 70534, etc. (488 total specimens) | ||||||||||
= Euornithopoda indet.
Sereno 1986
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Norman et al. 2004 | |||||||||
New unnamed taxon more derived than Hypsilophodon | ||||||||||
= Convolosaurus marri n. gen., n. sp.
Andrzejewski et al. 2019
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Andrzejewski et al. 2019 | |||||||||
Reptilia
- Dromaeosauridae
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Theropoda indet.
Marsh 1881
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1 individual | |||||||||
tooth, SMU 70435 | ||||||||||
= cf. Dromaeosauridae indet.
Colbert and Russell 1969
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Winkler et al. 1990 | |||||||||
= Dromaeosaurinae indet.
Matthew and Brown 1922
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Adams and Andrzejewski 2019 | |||||||||
Reptilia
- Paralligatoridae
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Tarsomordeo winkleri n. gen., n. sp.
Adams 2019
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Adams 2019 | 1 individual | ||||||||
SMU 76870 - holotype (partial skeleton) | ||||||||||
Crocodylia indet.
(Owen 1842)
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24 individuals | |||||||||
= Wannchampsus kirpachi n. gen., n. sp.
Adams 2014
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Adams 2014 | |||||||||
SMU 76604 - holotype (partial skull & mandible); SMU 76605 - paratype (partial skull & mandible); SMU 76818, L dentary; SMU 76835, teeth; SMU 71486-71487, SMU 74550, SMU 76819–SMU 76821, vertebrae; SMU 76822-76823, SMU 71488, R coracoids; SMU 76824-76825, R humeri, SMU 76826, L humerus; SMU 76828, L ulna; SMU 76827, R radius; SMU 76829, R ulnare; SMU 76830, R radiale; SMU 76831-76833, carpals; SMU 76834, osteoderm | ||||||||||
see common names |
Geography
Country: | United States | State/province: | Texas | County: | Comanche |
Coordinates: | 32.0° North, 98.5° West (view map) | ||||
Paleocoordinates: | 30.1° North, 53.3° West | ||||
Basis of coordinate: | based on nearby landmark | ||||
Altitude: | 1162 feet | ||||
Geographic resolution: | outcrop |
Time
Period: | Cretaceous | Epoch: | Early/Lower Cretaceous |
Stage: | Aptian | 10 m.y. bin: | Cretaceous 3 |
*Period: | Jurassic | ||
*International age/stage: | Tithonian - Maastrichtian | ||
Key time interval: | Late/Upper Aptian | ||
Age range of interval: | 122.46000 - 112.03000 m.y. ago | ||
* legacy (obsolete) database fields |
Stratigraphy
Geological group: | Trinity | Formation: | Twin Mountains | ||
Stratigraphic resolution: | bed | ||||
Stratigraphy comments: ETE dating method: time_unit, ETE age comment: . radiometric intage_max, radiometric intage_min
low in Twin Mountains Fm. |
Lithology and environment
Primary lithology: | desiccation cracks,wave ripples,bioturbation,paleosol/pedogenic,green,red or brown claystone |
Secondary lithology: | siltstone |
Includes fossils? | Y |
Lithology description: ETE rock type adj: "grn,motld red", ETE lithology comments: "clay,silt+sand" "five meters of green-mottled red clay, silt, and sand. Much of the sediment is massive owing either to original deposition or to bioturbation. Structures that are preserved, such as climbing ripples and settle-out laminae, are characteristic of low-energy deposition. Calcium carbonate nodules are common in the clays and silts...Sandstone dikes are present...V-shaped cracks outlined by green mottling and nodules form polygons that are one to two meters in diameter in plan view...The shape and sediment filling of these features suggest deep mud cracks on the floodplain." "the fossil bearing strata consist of 2 meters of reddish muds and sands. The cross-sectional profile contains stacked B horizons classified as well-developed calcic Vertisols which are interpreted to represent a semi-arid floodplain. Weathering indices of matrix collected from the paleosols estimate mean annual precipitation of ~330 mm/yr while crystallization temperature of pedogenic phyllosilicates indicate mean annual temperature of ~30 ± 3° C (approximately 13° C higher than modern temperatures at the same latitude)." | |
Environment: | "floodplain" |
Geology comments: ETE sed env 1: fluvial, ETE sed env 2: overbank ETE event: paleosol, ETE env comment: 0
"upland fluvial overbank sediments"; "semiarid to arid climatic conditions" |
Taphonomy
Modes of preservation: | body |
Lagerst�tten type: | concentrate |
Degree of concentration: | -multiple events |
Size of fossils: | macrofossils |
Spatial orientation: | life position |
Preservation of anatomical detail: | excellent |
Articulated whole bodies: | many |
Associated major elements: | some |
Disassociated major elements: | some |
Disassociated minor elements: | some |
Size sorting: | very poor |
Fragmentation: | occasional |
Temporal resolution: | time-averaged |
Spatial resolution: | autochthonous |
Collection methods and comments
Collection methods: | selective quarrying,mechanical,field collection | ||
Collection size: | 100 specimens | ||
Reason for describing collection: | paleoecologic analysis | ||
Collectors: | D. Winkler | Collection dates: | 1985 |
Collection method comments: ETE Size: .; ETE reference list: 478, 482, ; ETE museum list:
two main quarries are combined here: North Quarry and Camp Quarry. They are about 0.2 miles apart. |
Metadata
Also known as: | ETE Locality 1588, BMQ, 1B7, 2DU, 3BS | ||
Database number: | 22713 | ||
Authorizer: | A. Behrensmeyer, M. Carrano, P. Mannion | Enterer: | A. Behrensmeyer, P. Mannion, M. Carrano |
Modifier: | M. Carrano | Research group: | taphonomy,vertebrate |
Created: | 2001-05-29 01:00:00 | Last modified: | 2024-03-20 15:54:11 |
Access level: | the public | Released: | 2001-05-29 01:00:00 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
5720. | ETE 1476 | D. A. Winkler, P. A. Murray, L. L. Jacobs, W. R. Downs, J. R. Branch and P. Trudel. 1988. The Proctor Lake dinosaur locality, Lower Cretaceous of Texas. Hunteria 2(5):1-8 [A. Behrensmeyer/A. Behrensmeyer/M. Carrano] |
Secondary references:
52666 | T. L. Adams. 2014. Small crocodyliform from the Lower Cretaceous (late Aptian) of central Texas and its systematic relationship to the evolution of Eusuchia. Journal of Paleontology 88(5):1031-1049 [P. Mannion/P. Mannion] | |
69410 | T. L. Adams. 2019. Small terrestrial crocodyliform from the Lower Cretaceous (late Aptian) of central Texas and its implications on the paleoecology of the Proctor Lake dinosaur locality. Journal of Vertebrate Paleontology e1623226:1-15 [P. Mannion/P. Mannion] | |
87945 | T. L. Adams and K. A. Andrzejewski. 2019. Revisiting the Proctor Lake Dinosaur Locality: new insights on the paleoecology and paleoenvironment. Society of Vertebrate Paleontology, Abstracts of Papers, 79th Annual Meeting 52 [M. Carrano/M. Carrano/M. Carrano] | |
68145 | K. A. Andrzejewski, D. A. Winkler, and L. L. Jacobs. 2019. A new basal ornithopod (Dinosauria: Ornithischia) from the Early Cretaceous of Texas. PLoS One 14(3):e0207935:1-44 [M. Carrano/M. Carrano] | |
31500 | P. M. Galton. 2009. Notes on Neocomian (Lower Cretaceous) ornithopod dinosaurs from England - Hypsilophodon, Valdosaurus, "Camptosaurus", "Iguanodon" - and referred specimens from Romania and elsewhere. Revue de Paléobiologie, Genève 28(1):211-273 [R. Butler/R. Butler] | |
18905 | ETE | D. B. Norman, H.-D. Sues, L. M. Witmer and R. A. Coria. 2004. Basal Ornithopoda. In D. B. Weishampel, H. Osmolska, and P. Dodson (eds.), The Dinosauria (2nd edition). University of California Press, Berkeley 393-412 [M. Carrano/M. Carrano/M. Carrano] |
59213 | G. S. Paul. 1994. Thermal environments of dinosaur nestlings: implications for endothermy and insulation. In K. Carpenter, K. F. Hirsch & J. R. Horner (eds.), Dinosaur Eggs and Babies 279-287 [M. Carrano/M. Carrano] | |
7368 | D. A. Winkler. 1994. Aspects of growth in the Early Cretaceous Proctor Lake ornithopod. Journal of Vertebrate Paleontology 14(3, suppl.):53 [M. Carrano/M. Carrano/J. Alroy] | |
10534 | ETE | D. A. Winkler, P. A. Murry, and L. L. Jacobs. 1989. Ornithopod dinosaurs from the Lower Cretaceous Trinity Group, central Texas. Journal of Vertebrate Paleontology 9(3, suppl.):45A [M. Carrano/M. Carrano/M. Carrano] |
14231 | ETE | D. A. Winkler and P. A. Murry. 1989. Paleoecology and hypsilophodontid behavior at the Proctor Lake dinosaur locality (Early Cretaceous), Texas. In J. O. Farlow (ed.), Paleobiology of the Dinosaurs. Geological Society of America Special Paper 238:55-61 [M. Carrano/M. Carrano/M. Carrano] |
7600 | D. A. Winkler, P. A. Murry, and L. L. Jacobs. 1990. Early Cretaceous (Comanchean) vertebrates of central Texas. Journal of Vertebrate Paleontology 10(1):95-116 [J. Alroy/J. Alroy/J. Alroy] | |
14616 | ETE | D. A. Winkler, P. A. Murry, and L. L. Jacobs. 1992. Differentiating adult and juvenile ornithischian dinosaurs in the Early Cretaceous. Journal of Vertebrate Paleontology 12(3, suppl.):60A [M. Carrano/M. Carrano/M. Carrano] |