Tsu City: Burdigalian, Japan

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Chondrichthyes - Lamniformes - Otodontidae
Megalolamna paradoxodon Shimada et al. 2017
see common names

Geography
Country:Japan
Coordinates: 34.7° North, 136.5° East (view map)
Paleocoordinates:38.3° North, 133.8° East
Basis of coordinate:based on political unit
Time
Period:Neogene Epoch:Miocene
Stage:Burdigalian 10 m.y. bin:Cenozoic 5
Key time interval:Burdigalian
Age range of interval:20.44000 - 15.98000 m.y. ago
Stratigraphy
Geological group:Ichishi Formation:Oi Member:Mitsugeno Shaly Sandstone
Stratigraphic resolution:member
Stratigraphy comments: member is equivalent to planktonic foraminiferan zones N7–N8.
On the basis of other invertebrate fossils, Itoigawa and Shibata
(1992) suggested the stratigraphic unit to be 17.5–17 Ma, and
Sugisawa and Honda (1999) 16–18 Ma. Thus, the Mitsugeno
Shaly Sandstone Member is interpreted to be late early Miocene
(Tanaka 2013), or late Burdigalian, in age.
Lithology and environment
Primary lithology: sandstone
Environment:marine indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Reason for describing collection:taxonomic analysis
Metadata
Database number:197513
Authorizer:P. Holroyd Enterer:P. Holroyd
Research group:vertebrate
Created:2018-11-14 17:58:55 Last modified:2018-11-14 17:58:55
Access level:the public Released:2018-11-14 17:58:55
Creative Commons license:CC BY
Reference information

Primary reference:
67362. K. Shimada, R. E. Chandler, O. Lok Tao Lam, T. Tanaka, and D. J. Ward. 2017. A new elusive otodontid shark (Lamniformes: Otodontidae) from the lower Miocene, and comments on the taxonomy of otodontid genera, including the ‘megatoothed’ clade. Historical Biology 29(5):704-714 [P. Holroyd/P. Holroyd]