J40/f182 - Waimate [Waihao Greensand]: Bortonian, New Zealand

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia - Cetacea - Basilosauridae
? Zygorhiza sp. True 1908
4 specimens
Bivalvia - Nuculanida - Nuculanidae
Saccella semiteres (Hutton 1877)
Maxwell 1992
? Pseudoportlandia ? tahuia (Marwick 1942)
Maxwell 1992
Bivalvia - Pectinida - Pectinidae
Serripecten tahuianus
Maxwell 1992
Serripecten marwicki n. sp. Maxwell 1992
Maxwell 1992
Bivalvia - Ostreida - Gryphaeidae
Pycnodonte mackayi
Maxwell 1992
Bivalvia - Cardiida - Cardiidae
Nemocardium carteri n. sp.
Maxwell 1992
see common names

Geography
Country:New Zealand State/province:South Canterbury
Coordinates: 44.8° South, 170.9° East (view map)
Paleocoordinates:52.3° South, 167.3° West
Basis of coordinate:stated in text
Geographic resolution:small collection
Time
Period:Paleogene Epoch:Eocene
10 m.y. bin:Cenozoic 2-3
*Period:Middle Tertiary - Middle Tertiary *Epoch:Middle - Late/Upper Eocene - Middle - Late/Upper Eocene
*International age/stage:Late/Upper Lutetian - Early/Lower Bartonian *Local age/stage:Late/Upper Bortonian - Late/Upper Bortonian
Key time interval:Bortonian Zone: upper P12 to P13
Age range of interval:42.60000 - 39.10000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Waihao Greensand Member:Lower Greensand
Stratigraphic resolution:member
Stratigraphy comments: At least OU22242, and likely all of the specimens, originate from a horizon located immediately below a phosphatised, concretionary layer marking the top of the Lower Greensand Member [14]. The age of this deposit is constrained by the occurrence of the benthic foraminiferan Bulimica bortonica in roughly the same horizon as the fossil itself [14], and that of Rectuvigerina prisca ca. 1.8 m below the phosphatised band [15]. In a relatively nearby section located at Hampden, North Otago, the overlap of these two species is extremely short, with B. bortonica disappearing at or just before the upper boundary of the local Bortonian stage (38.4 Ma [2]), whereas R. prisca first appears during the uppermost Bortonian (ca. 39.5 Ma) [16]. Together, these occurrences constrain the age of Zygorhiza sp. to ca. 39.5–38.4 Ma (late Bartonian). (Marx & Fordyce, 2015).
Lithology and environment
Primary lithology:glauconitic unlithified argillaceous sandstone
Includes fossils?Y
Environment:marine indet.
Taphonomy
Modes of preservation:body,original phosphate
Size of fossils:macrofossils
Preservation of anatomical detail:good
Disassociated major elements:all
Collection methods and comments
Collection excludes:some microfossils
Collection methods:surface (float),field collection
Collection size:4 specimens
Reason for describing collection:taxonomic analysis
Metadata
Database number:32900
Authorizer:M. Uhen Enterer:M. Uhen
Modifier:M. Uhen Research group:vertebrate
Created:2003-07-17 18:30:30 Last modified:2015-04-16 16:45:27
Access level:the public Released:2003-07-17 18:30:30
Creative Commons license:CC BY
Reference information

Primary reference:
8812. R. Kohler and R. E. Fordyce. 1997. An archaeocete whale (Cetacea: Archaeoceti) from the Eocene Waiho Greensand, New Zealand. Journal of Vertebrate Paleontology 17(3):574-583 [M. Uhen/M. Uhen/M. Uhen]

Secondary references:

55050 F. G. Marx and R. E. Fordyce. 2015. Baleen boom and bust: a synthesis of mysticete phylogeny, diversity and disparity. Royal Society Open Science 2:140434 [M. Uhen/M. Uhen]
10506 P. A. Maxwell. 1992. Eocene Mollusca from the vicinity of McCulloch's Bridge, Waihao River, South Canterbury, New Zealand: Paleoecology and systematics. New Zealand Geological Survey Paleontological Bulletin 65:1-280 [M. Uhen/M. Uhen/M. Uhen]