Kikak-Tegoseak Quarry (Cretaceous of the United States)

Also known as Kikak Creek, Kekak-Tegoseak

Where: North Slope County, Alaska (69.8° N, 151.5° W: paleocoordinates 82.1° N, 127.8° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Kogosukruk Tongue Member (Prince Creek Formation), Late/Upper Maastrichtian (70.6 - 66.0 Ma)

• Radioisotopic dates derived from multiple tuff beds throughout this section of the Prince Creek Formation range from 68Ma to 71Ma, with an average estimate of 69.1+/20.3Ma, placing it in the early Late Maastrichtian. Palynological samples from the Kikak-Tegoseak Quarry itself correlate reasonably well with the radioisotopic data, showing an Early Maastrichtian assemblage

• bed-level stratigraphic resolution

Environment/lithology: delta plain; bioturbated, paleosol/pedogenic, sideritic, brown, carbonaceous siltstone and fine-grained sandstone

• "a swampy wetland delta plain"; "Deposition occurred in trunk channels, on distributary-channel splay complexes, in interdistributary bays, and on floodplains."
• "Channelized facies at the Kikak-Tegoseak site are dominated by small, non-migrating (probably anastomosed) predominantly fine-grained sandstone channel fills, although larger, coarser-grained sandstone channel fills with well-developed lateral accretion surfaces (meandering channels) have been observed elsewhere within the Prince Creek Formation. Non-channelized facies represent lake, lake margin, levee and crevasse splay environments and primarily poorly drained and weakly developed paleosols. Organic-rich siltstones and coaly shales indicate abundant plant material and hydromorphic environments. Root traces, organic debris and siderite are ubiquitous elements of overbank facies. Bentonites are locally present."

Size classes: macrofossils, mesofossils, microfossils

• ceratopsian herd caught in seasonal runoff flood, then mixed and buried with other taxa; dermestid scavenging prior to burial; little subaerial exposure/weathering stages 0-2;

Collected by University of Alaska Museum in 1994-2007

Collection methods: quarrying, surface (float), surface (in situ), mechanical,

• For Nanuqsaurus: "The blocks were individually removed; some were wrapped in aluminum foil, then placed in sealed plastic buckets for transport out of the field area, and shipped to Dallas, Texas. Preparation was conducted in the Paleontology Lab of the Perot Museum of Nature and Science (DMNH; Dallas, Texas, USA). The specimens were extracted from the blocks using manual pneumatic tools (‘airscribes’) to remove the hard, fine-grained rock from the bones, with finer cleaning and detail work performed with sharpened tungsten-carbide points mounted in pin-vices. Broken parts were glued together using Butvar B-76 dissolved in acetone to a thick consistency. More fragile areas were treated with very dilute Butvar B-76 dissolved in acetone to allow deeper penetration of the solution into small cracks and porous areas. Molds of the specimens were made using room-temperature vulcanizing platinum-cure silicone rubber. The specimens are now housed in the collection of the Perot Museum of Nature and Science."

Primary reference: A. R. Fiorillo and R. A. Gangloff. 2001. Theropod teeth from the Prince Creek Formation (Cretaceous) of northern Alaska, with speculations on Arctic dinosaur paleoecology. Journal of Vertebrate Paleontology 20(4):675-682 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 51889: authorized by Matthew Carrano, entered by Matthew Carrano on 29.06.2005, edited by Philip Mannion and Roger Benson

Creative Commons license: CC BY (attribution)

Taxonomic list

 Coleoptera - Dermestidae
Dermestidae indet.2 Latreille 1804 skin beetle
bone borings
 Avetheropoda - Dromaeosauridae
Dromaeosaurus albertensis Matthew and Brown 1922 coelurosaur
 Avetheropoda - Troodontidae
Troodon formosus2 Leidy 1856 coelurosaur
 Avetheropoda - Tyrannosauridae
Nanuqsaurus hoglundi n. gen. n. sp.4
Nanuqsaurus hoglundi n. gen. n. sp.4 Fiorillo and Tykoski 2014 tyrannosaurine
 Avetheropoda - Ornithomimidae
Ornithomimidae indet.1 Marsh 1890 ornithomimid
 Neornithischia - Ceratopsidae
Pachyrhinosaurus perotorum n. sp.3 Fiorillo and Tykoski 2012 ceratopsid
 Neornithischia - Hadrosauridae
Hadrosauridae indet.1 Cope 1869 hadrosaurid
 Liliales - Liliidae