Shag Point: Haumurian, New Zealand
collected by Fordyce 1983
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Reptilia
- Mosasauridae
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Mosasauridae indet.
Gervais 1852
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Reptilia
- Plesiosauria
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Plesiosauria indet.
de Blainville 1835
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1 specimen | |||||||||
| OU 21793, parts of a small plesiosaur | ||||||||||
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Reptilia
- Plesiosauria
- Elasmosauridae
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Kaiwhekea katiki n. gen., n. sp.
Cruickshank and Fordyce 2002
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1 individual | |||||||||
| OU 12649, n almost complete skull, all cervical, pectoral, thoracic and sacral vertebrae, and anterior caudal vertebrae; much of the right ribcage and parts of the left ribcage; some gastralia; almost complete right hindlimb with associated partial pelvis; fragments of left hindlimb | ||||||||||
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Cephalopoda
- Belemnitida
- Dimitobelidae
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Dimitobelus hectori
Stevens 1965
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| recombined as Dimitobelus (Dimitocamax) hectori | ||||||||||
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Dinophyceae
- Peridiniales
- Peridiniaceae
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Chatangiella campbellensis
Lentin and Williams 1976
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Dinophyceae
- Peridiniales
- Deflandreaceae
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Palaeocystodinium granulatum
Lentin and Williams 1976
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Dinophyceae
- Gonyaulacales
- Gonyaulacaceae
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Cribroperidinium edwardsii
Davey 1969
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unclassified
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Palambages indet.
Wetzel 1961
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| see common names | ||||||||||
Geography
| Country: | New Zealand | State/province: | South Island | County: | North Otago |
| Coordinates: | 45.5° South, 170.8° East (view map) | ||||
| Paleocoordinates: | 60.4° South, 153.3° West | ||||
| Basis of coordinate: | stated in text | ||||
| Geographic resolution: | small collection |
Time
| Period: | Cretaceous | Epoch: | Late/Upper Cretaceous |
| 10 m.y. bin: | Cretaceous 7-8 | ||
| Key time interval: | Haumurian | Other zone: | Palaeocystodinium granulatum |
| Age range of interval: | 83.60000 - 66.00000 m.y. ago |
Stratigraphy
| Formation: | Katiki | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: "Lower to Middle Katiki Formation. Fossil zones are, for belemnites, the Dimitobelus hectori Zone and, for dinoflagellates, probably the Palaeocystodinium granulatum Subzone of the Alterbidinium acutulum Zone. These place the plesiosaur horizon in the upper part of the local Haumurian Stage, close to the boundary between Upper and Lower Maastrichtian, or 69±70Ma (correlations after Crampton et al. 2000). The unique fossil record number (Fossil Record File, Geological Society of New Zealand)
for this horizon and site is J43/fl79." | |||||
Lithology and environment
| Primary lithology: | massive,gray lithified sandy siltstone |
| Includes fossils? | Y |
| Lithology description: "the plesiosaur-bearing Katiki Formation (of McKay 1887) comprises about 100m of gently north to north-east dipping and generally massive, dark grey, indurated, sandy siltstone. The Katiki Formation overlies more proximal marine sandstones of the Herbert Formation and, below that, non-marine quartzose sandy to pebbly coal measures of the Shag Point Group." | |
| Environment: | deltaic indet. |
| Geology comments: "Many of the reptile-bearing strata show some evidence of water activity, such as conspicuous bedding, current-orientated macrofossils, scours, shell or gravel lags, and disarticulated bones. Such features suggest deposition below normal wave base but perhaps within storm wave base; inner shelf settings seem likely. Consistent with this interpretation is the general dearth of oceanic taxa such as planktonic foraminifera and ammonoids"; "Outcrop characteristics of the Katiki Formation (e.g. massively bedded fine-grained sediments, sporadic marine macrofossils and sparse coarse terrigenous clastic grains), suggest deposition in a quiet but not necessarily distal marine setting. The organic-rich nature of the sediment, clusters of agglutinated foraminifera, lack of calcareous foraminifera, and the abundance of subhorizontal traces at the plesiosaur site indicate a soft anoxic substrate in a quiet, inshore estuarine or delta-margin setting." | |
Taphonomy
| Modes of preservation: | body,mold/impression,concretion |
| Size of fossils: | macrofossils |
| Preservation of anatomical detail: | medium |
| Abundance in sediment: | rare |
| Fragmentation: | occasional |
| Bioerosion: | occasional |
| Spatial resolution: | parautochthonous |
Collection methods and comments
| Collection excludes: | some macrofossils,some microfossils | ||
| Collection methods: | surface (in situ),chemical,mechanical,acetic,field collection | ||
| Collection size: | 1 individuals | ||
| Reason for describing collection: | general faunal/floral analysis | ||
| Museum repositories: | OU | ||
| Collectors: | Fordyce | Collection dates: | 1983 |
Metadata
| Database number: | 104692 | ||
| Authorizer: | M. Carrano, E. Vlachos | Enterer: | H. Street, F. Aspromonte |
| Modifier: | M. Carrano | Research group: | vertebrate |
| Created: | 2011-02-08 07:53:14 | Last modified: | 2022-01-13 15:57:38 |
| Access level: | the public | Released: | 2011-02-08 07:53:14 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 35042. | A. R. I. Cruickshank and R. E. Fordyce. 2002. A new marine reptile (Sauropterygia) from New Zealand: further evidence for a Late Cretaceous Austral radiation of cryptoclidid plesiosaurs. Palaeontology 45(3):557-575 [M. Carrano/H. Street] |
Secondary references:
| 79070 | J. D. Scanlon. 2006. Dinosaurs and other Mesozoic reptiles of Australasia. In J. R. Merrick, M. Archer, G. M. Hickey, & M. S. Y. Lee (eds.), Evolution and Biogeography of Australasian Vertebrates 265-290 [M. Carrano/M. Carrano] |