Boomer, Ian (1999): Late Cretaceous and Cainozoic bathyal Ostracoda of DSDP Site 62-463 in the Central Pacific (Fig. 3) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.681416, Supplement to: Boomer, I (1999): Late Cretaceous and Cainozoic bathyal Ostracoda from the Central Pacific (DSDP Site 463). Marine Micropaleontology, 37(2), 131-147, https://doi.org/10.1016/S0377-8398(99)00015-8
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Published: 1999 (exact date unknown) • DOI registered: 2008-03-10
Abstract:
Cainozoic deep-sea ostracod assemblages from the summits of Mid-Pacific guyots point to high levels of endemism possibly as a result of their bathymetric separation from the surrounding sea floor. However, the interpretation of these fossil assemblages is hampered by the paucity of comparative material from surrounding non-guyot sites. Fifteen ostracod assemblages from DSDP Site 463 (Late Cretaceous-Pleistocene) were studied to compare with those from nearby guyots. Three distinct faunal assemblages are recognised at Site 463: Assemblage A (Maastrichtian-Eocene), Assemblage B (Oligocene-Upper Miocene) and Assemblage C (Upper Miocene-Pleistocene) although the palaeoenvironmental significance of these units is unclear. Sixty-two ostracod species are identified, the thirteen most abundant are discussed in the taxonomic section, five of which are described as new. Between 30 and 100% of the species encountered in each sample are considered as endemic to Site 463, while some of the remaining species were previously thought to be endemic to individual guyots. Similarly high levels of endemism on nearby guyots probably reflect an incomplete knowledge of deep-sea ostracod faunas rather than the establishment of geographically or bathymetrically restricted populations. The presence of globally pandemic and geographically widespread taxa on sites such as the Mid-Pacific Mountains, surrounded by abyssal depths which lie below the CCD, indicates that some faunal exchange or migration of ostracods does take place. This must be achieved within the intermediate waters and probably occurs passively.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Latitude: 21.350200 * Longitude: 174.667800
Date/Time Start: 1978-08-02T00:00:00 * Date/Time End: 1978-08-02T00:00:00
Minimum DEPTH, sediment/rock: 2.04 m * Maximum DEPTH, sediment/rock: 65.83 m
Event(s):
62-463 * Latitude: 21.350200 * Longitude: 174.667800 * Date/Time: 1978-08-02T00:00:00 * Elevation: -2525.0 m * Penetration: 822.5 m * Recovery: 305.5 m * Location: North Pacific/SEAMOUNT * Campaign: Leg62 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 92 cores; 820.5 m cored; 0 m drilled; 37.2 % recovery
Comment:
<1 indicates inferred presence of species although not recorded
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DEPTH, sediment/rock | Depth sed | m | Geocode | ||
| 2 | Sample code/label | Sample label | Boomer, Ian | DSDP/ODP/IODP sample designation | ||
| 3 | Nannofossil zone | Nannos zone | Boomer, Ian | NN/NP Zones | ||
| 4 | Epoch | Epoch | Boomer, Ian | |||
| 5 | Argilloecia sp. | Argilloecia sp. | # | Boomer, Ian | Counting >125 µm fraction | var. A |
| 6 | Argilloecia sp. | Argilloecia sp. | # | Boomer, Ian | Counting >125 µm fraction | var. B |
| 7 | Bairdoppilata sp. | Bairdoppilata sp. | # | Boomer, Ian | Counting >125 µm fraction | var. A |
| 8 | Bairdoppilata sp. | Bairdoppilata sp. | # | Boomer, Ian | Counting >125 µm fraction | var. B |
| 9 | Cytherella sp. | Cytherella sp. | # | Boomer, Ian | Counting >125 µm fraction | var. A |
| 10 | Cytherella sp. | Cytherella sp. | # | Boomer, Ian | Counting >125 µm fraction | var. 10 sensu Boomer and Whalley, 1995 |
| 11 | Cytherella sp. | Cytherella sp. | # | Boomer, Ian | Counting >125 µm fraction | var. C |
| 12 | Cytherella postagrena | C. postagrena | # | Boomer, Ian | Counting >125 µm fraction | sp. nov. |
| 13 | Pariceratina ubiquita | P. ubiquita | # | Boomer, Ian | Counting >125 µm fraction | |
| 14 | Pennyella sp. | Pennyella sp. | # | Boomer, Ian | Counting >125 µm fraction | var. A |
| 15 | Pennyella sp. | Pennyella sp. | # | Boomer, Ian | Counting >125 µm fraction | var. B |
| 16 | Pennyella sp. | Pennyella sp. | # | Boomer, Ian | Counting >125 µm fraction | var. C |
| 17 | Cytheropleron sp. | Cytheropleron sp. | # | Boomer, Ian | Counting >125 µm fraction | var. H |
| 18 | Hemiparacytheridea sp. | Hemiparacytheridea sp. | # | Boomer, Ian | Counting >125 µm fraction | var. A |
| 19 | Hemiparacytheridea sp. | Hemiparacytheridea sp. | # | Boomer, Ian | Counting >125 µm fraction | var. 14 sensu boomer and Whalley, 1995 |
| 20 | Aversovalva sp. | Aversovalva sp. | # | Boomer, Ian | Counting >125 µm fraction | var. 22 |
| 21 | Aversovalva sp. | Aversovalva sp. | # | Boomer, Ian | Counting >125 µm fraction | var. B |
| 22 | Aversovalva sp. | Aversovalva sp. | # | Boomer, Ian | Counting >125 µm fraction | var. 34 sensu Whalley and Boomer, 1995 |
| 23 | Eucythere sp. | Eucythere sp. | # | Boomer, Ian | Counting >125 µm fraction | var. C |
| 24 | Eucythere sp. | Eucythere sp. | # | Boomer, Ian | Counting >125 µm fraction | var. D |
| 25 | Eucythere sp. | Eucythere sp. | # | Boomer, Ian | Counting >125 µm fraction | var. A |
| 26 | Eucythere sp. | Eucythere sp. | # | Boomer, Ian | Counting >125 µm fraction | var. B |
| 27 | Cytherella posterospinosa | C. posterospinosa | # | Boomer, Ian | Counting >125 µm fraction | sp. nov. |
| 28 | Cardobairdia sp. | Cardobairdia sp. | # | Boomer, Ian | Counting >125 µm fraction | var. A |
| 29 | Kuiperiana cf. bathymarina | K. cf. bathymarina | # | Boomer, Ian | Counting >125 µm fraction | |
| 30 | Profundobythere bathytatos | P. bathytatos | # | Boomer, Ian | Counting >125 µm fraction | |
| 31 | Abyssocythere paratrinidadensis | A. paratrinidadensis | # | Boomer, Ian | Counting >125 µm fraction | sp. nov. |
| 32 | Poseidonamicus dinglei | P. dinglei | # | Boomer, Ian | Counting >125 µm fraction | sp. nov. |
| 33 | Cytheropteron sp. | Cytheropteron sp. | # | Boomer, Ian | Counting >125 µm fraction | var. C |
| 34 | Cytheropteron sp. | Cytheropteron sp. | # | Boomer, Ian | Counting >125 µm fraction | var. G |
| 35 | Cytheropteron sp. | Cytheropteron sp. | # | Boomer, Ian | Counting >125 µm fraction | var. A |
| 36 | Cytheropteron sp. | Cytheropteron sp. | # | Boomer, Ian | Counting >125 µm fraction | var. B |
| 37 | Cytheropteron sp. | Cytheropteron sp. | # | Boomer, Ian | Counting >125 µm fraction | var. F |
| 38 | Cytheropteron sp. | Cytheropteron sp. | # | Boomer, Ian | Counting >125 µm fraction | var. D |
| 39 | Hemiparacytheridea ayressi | H. ayressi | # | Boomer, Ian | Counting >125 µm fraction | sp. nov. |
| 40 | Krithe sp. | Krithe sp. | # | Boomer, Ian | Counting >125 µm fraction | var. A |
| 41 | Krithe sp. | Krithe sp. | # | Boomer, Ian | Counting >125 µm fraction | var. B |
| 42 | Krithe sp. | Krithe sp. | # | Boomer, Ian | Counting >125 µm fraction | var. C |
| 43 | Krithe sp. | Krithe sp. | # | Boomer, Ian | Counting >125 µm fraction | var. D |
| 44 | Semicytherura pulchra | S. pulchra | # | Boomer, Ian | Counting >125 µm fraction | |
| 45 | Aratrocypris sp. | Aratrocypris sp. | # | Boomer, Ian | Counting >125 µm fraction | var. A |
| 46 | Australoecia cf. micra | A. cf. micra | # | Boomer, Ian | Counting >125 µm fraction | |
| 47 | Henryhowella cf. asperrima | H. cf. asperrima | # | Boomer, Ian | Counting >125 µm fraction | |
| 48 | Eucytherura sp. | Eucytherura sp. | # | Boomer, Ian | Counting >125 µm fraction | var. 9 sensu Boomer and Whalley, 1995 |
| 49 | Eucytherura sp. | Eucytherura sp. | # | Boomer, Ian | Counting >125 µm fraction | var. 3 sensu Boomer and Whalley, 1995 |
| 50 | Pedicythere sp. | Pedicythere sp. | # | Boomer, Ian | Counting >125 µm fraction | var. A |
| 51 | Monoceratina sp. | Monoceratina sp. | # | Boomer, Ian | Counting >125 µm fraction | var. A |
| 52 | Hemiparacytheridea mediopunctata | H. mediopunctata | # | Boomer, Ian | Counting >125 µm fraction | |
| 53 | Aversovalva formosa | A. formosa | # | Boomer, Ian | Counting >125 µm fraction | |
| 54 | Parahemingnayella downingae | P. downingae | # | Boomer, Ian | Counting >125 µm fraction | |
| 55 | Hemiparacytheridea cf. mediopunctata | H. cf. mediopunctata | # | Boomer, Ian | Counting >125 µm fraction | |
| 56 | Poseidonamicus cf. rudis | P. cf. rudis | # | Boomer, Ian | Counting >125 µm fraction | |
| 57 | Rimacytheropteron sp. | Rimacytheropteron sp. | # | Boomer, Ian | Counting >125 µm fraction | var. A |
| 58 | Bythoceratina sp. | Bythoceratina sp. | # | Boomer, Ian | Counting >125 µm fraction | var. A |
| 59 | Bathycythere bermudezi | B. bermudezi | # | Boomer, Ian | Counting >125 µm fraction | |
| 60 | Zabythocypris sp. | Zabythocypris sp. | # | Boomer, Ian | Counting >125 µm fraction | var. A |
| 61 | Bradleya dictyon | B. dictyon | # | Boomer, Ian | Counting >125 µm fraction | |
| 62 | Henryhowella cf. dasyderma | H. cf. dasyderma | # | Boomer, Ian | Counting >125 µm fraction | |
| 63 | Poseidonamicus sp. | Poseidonamicus sp. | # | Boomer, Ian | Counting >125 µm fraction | var. B |
| 64 | Cytheropteron sp. | Cytheropteron sp. | # | Boomer, Ian | Counting >125 µm fraction | var. E |
| 65 | Cytheropteron sp. | Cytheropteron sp. | # | Boomer, Ian | Counting >125 µm fraction | var. I |
| 66 | Eradleya sp. | Eradleya sp. | # | Boomer, Ian | Counting >125 µm fraction | var. B |
| 67 | Ostracoda | Ostrac | # | Boomer, Ian | Counting >125 µm fraction | |
| 68 | Comment | Comment | Boomer, Ian | Assemblage |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
1002 data points