ammonites

Lujiatun Maotherium locality: Early/Lower Aptian, China

Where & when
Geology
Taphonomy & methods
Metadata & references
Geography
Country:China State/province:Liaoning
Coordinates: 41.6° North, 120.9° East (view map)
Paleocoordinates:45.0° North, 121.0° East
Basis of coordinate:stated in text
Geographic resolution:small collection
Time
Period:Cretaceous Epoch:Early/Lower Cretaceous
Stage:Aptian 10 m.y. bin:Cretaceous 3
Key time interval:Early/Lower Aptian
Age range of interval:125.0 - 112.0 m.y. ago
Stratigraphy
Geological group:Jehol Formation:Yixian
Stratigraphy comments: "site [is] dated to be 123.2 +/- 0.1 million years old" (= early Aptian)
Lithology and environment
Primary lithology: lithified not reported
Lithology description: not a word said, but clearly lithified based on preservation of specimen
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Articulated whole bodies:some
Collection methods and comments
Reason for describing collection:taxonomic analysis
Collection method comments: Henan Geological Museum collection
Taxonomic list comments: possibly the same as 53493 or some other Lujiatun collection, but the exact coordinate is slightly off
Metadata
Database number:92147
Authorizer:J. Alroy Enterer:J. Alroy
Research group:vertebrate
Created:2009-11-02 12:08:39 Last modified:2009-11-02 12:08:39
Access level:the public Released:2009-11-02 12:08:39
Reference information
Primary reference:
31038 Q. Ji, Z.-X. Luo, X. Zhang, C.-X. Yuan, and L. Xu. 2009. Evolutionary Development of the Middle Ear in Mesozoic Therian Mammals. Science 326:278-281 [J. Alroy/J. Alroy]