Dapyeongri paleosol, upper bone layer: Late Aptian - Early Albian, South Korea

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia
Reptilia - Theropoda
unclassified
Scoyenia sp. White 1929
traces; "dermestid beetles"
see common names

Geography
Country:South Korea State/province:Gyeongsangnam-do
Coordinates: 34.9° North, 128.1° East (view map)
Paleocoordinates:37.4° North, 138.6° East (Wright 2013)
Basis of coordinate:based on nearby landmark
Altitude:8 meters
Geographic resolution:outcrop
Time
Period: Cretaceous Epoch: Early Cretaceous
10 m.y. bin: Cretaceous 2-3 - Cretaceous 4
Key time interval: Late Aptian - Early Albian
Age range of interval: 119.57 - 110.1 m.y. ago
Stratigraphy
Geological group:Shindong Formation:Hasandong
Stratigraphic resolution:bed
Stratigraphy comments: Previously, a Hauterivian-Barremian age for the Hasandong Formation was proposed, based on palynomorph assemblages (Choi, 1985; Choi, 1989; Yi et al. 1994). However, molluscan faunas suggest and Aptian-Albian age (Yang 1982) and Lee et al. 2018 SHRIMP and U-pb analyses provided a maximum depositional age of approximately 118+/-2.6Ma. The youngest detrital zircon ages were approximately 109Ma (Lee et al. 2010)
Lithology and environment
Primary lithology:burrows,paleosol/pedogenic,intraclastic,ooidal,gray,green sandy mudstone
Secondary lithology:bioturbation,paleosol/pedogenic,pebbly,brown,red sandy mudstone
Includes fossils?Y
Lithology description: "a type of cumulate-truncated paleosol profile consisting of a reddish-brown calcic paleosol (lower part) and a greenish-gray vertic-calcic paleosol (upper part). Planar to cross-laminated fine sandstone (crevasse splay deposits) overlies the bone deposit with an erosive contact, and grades into mudstone in which the calcrete nodules are scattered...The lower calcic paleosol is composed of sandy mudstone and is bioturbated in upper part. Tubular and nodular calcretes are scattered (especially in the upper part), and ornithoid egg-shell fragments are included. Some well-rounded pebbles consisting of crystalline rock, variegated sandstone, and mudstone with pedogenic calcite rims are, in places, present just below the upper vertic-calcic paleosol in which dinosaur bone fragments occur. The vertic-calcic paleosol generally consists of sandy mudstone in which pseudoanticlines and calcrete nodules occur...In places, calcrete intraclastic deposits, including calcrete ooids, occur in patches in the lower part of vertic-calcic paleosol and show reverse grading."
Environment:"floodplain"
Geology comments: Floddplain paleosol with arid, seasonal climate with alternating wet and dry.
Taphonomy
Modes of preservation:body,trace
Degree of concentration:dispersed
Size of fossils:macrofossils,mesofossils
Preservation of anatomical detail:poor
Articulated whole bodies:none
Associated major elements:none
Disassociated major elements:some
Disassociated minor elements:some
Fragmentation:extreme
Bioerosion:frequent
Feeding/predation traces:arthropod boring
Temporal resolution:time-averaged
Spatial resolution:autochthonous
Collection methods and comments
Collection methods:selective quarrying,surface (float),surface (in situ),mechanical,peel or thin section,field collection
Reason for describing collection:taphonomic analysis
Metadata
Database number:38654
Authorizer:M. Carrano Enterer:M. Carrano
Modifier:G. Varnham Research group:vertebrate
Created:2004-04-27 12:48:18 Last modified:2025-02-22 15:12:02
Access level:the public Released:2004-04-27 12:48:18
Creative Commons license:CC0
Reference information

Primary reference:
10368. I. S. Paik. 2000. Bone chip-filled burrows associated with bored dinosaur bone in floodplain paleosols of the Cretaceous Hasandong Formation, Korea. Palaeogeography, Palaeoclimatology, Palaeoecology 157:213-225 [M. Carrano/M. Carrano/M. Carrano]

Secondary references:

14400ETE Y.-N. Lee. 2003. Dinosaur bones and eggs in South Korea. Memoir of the Fukui Prefectural Dinosaur Museum 2:113-121 [M. Carrano/M. Carrano/M. Carrano]