Alag Teg [HMNS-GIN] (Cretaceous of Mongolia)

Also known as Aleg Teeg

Where: Omnogov, Mongolia (44.3° N, 103.3° E: paleocoordinates 41.9° N, 92.3° E)

• coordinate stated in text

• outcrop-level geographic resolution

When: Tugrugyin Member (Djadokhta Formation), Late/Upper Campanian (83.5 - 70.6 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: fluvial; fine-grained sandstone and brown, red mudstone

• fluvial facies, braided river systems
• thin, "red-colored mudstone"…"the dominant portion fine sandstone layers"; "reddish brown mudstone layer" with Pinacosaurus mass burial.

Size classes: macrofossils, mesofossils

Collected by HMNS-GIN in 1993–1996, 1998, 2000, 2007

Collection methods: surface (in situ), mechanical,

Primary reference: D. E. Fastovsky and M. Watabe. 1997. Sedimentary environment of Alag Teg (Djadochta age), Central Gobi, Mongolia. Abstract of Report Meeting, Mongolia-Japan Joint Paleontological Expedition 7 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 59372: authorized by Matthew Carrano, entered by Matthew Carrano on 29.03.2006

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Dinosauria -
Dinosauria indet.1 Owen 1842 dinosaur
small fragments
 Saurischia -
Sauropoda indet.5 Marsh 1878 sauropod
"the vertebrae of a sauropod were found in the reddish mudstone at the base of the main cliff facing north"
 Theropoda -
Theropoda indet.3 theropod
tooth
 Ornithischia -
Ankylosauria indet.1 Osborn 1923 ankylosaur
 Ornithischia - Ankylosauridae
Pinacosaurus sp.4 Gilmore 1933 ankylosaurid
juvenile skeletons; 950713 AT Pinaco M1-950718 AT Pinaco M32, 950715 AT Pinaco PJ1-PJ3, 960830-0901 AT Pinaco
 Ornithischia - Hadrosauridae
Hadrosauridae indet.2 Cope 1869 hadrosaurid
four incomplete skeletons, +1 illegally collected; 950717 AT-N M-1, 950717 AT-N PJ-1, 960901 AT HDR 1, 960902 AT GMB/PJ-1-3, 960902 AT HDR 2 (? = 960903 AT Hadoro-II), 000713 AT-N