Watkins, David K; Self-Trail, Jean; Pospichal, James J; Seefelt, Ellen L (2021): Biometric data for the Paleogene calcareous nannofossil genus Hornibrookina from light and scanning electron microscopy [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.931818
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Abstract:
Biometric measurements from specimens from the calcareous nannofossil Hornibrookina were collected to help determine taxonomic and evolutionary relationships within the genus. Two sets of data are included. The first (Supplementary Data 1) are measurements taken from SEM microphotographs (published and previously unpublished) to determine the number and arrangement of the bars or bar-like structures found in the nannofossil central areas of different Hornibrookina species. The second (Supplementary Data 2) contains measurements from light microphotographs for all Hornibrookina species include coccolith length and width measured along the cardinal axes of the elliptical nannofossils. Additional measurements of the length and width of the central areas of specimens from the Hornibrookina teuriensis-H. edwardsi lineage were taken to compare this feature for its taxonomic significance. The specimens measure range in age from early Paleocene to early Eocene. Specimens are from various locations globally including the Coastal Plain of eastern United States (Maryland, Virginia, New Jersey), Tunisia, North Sea, New Zealand, South Atlantic (São Paulo Plateau), and the Southern Ocean (Maud Rise).
Related to:
Self-Trail, Jean; Watkins, David K; Pospichal, James J; Seefelt, Ellen L (2022): Evolution and taxonomy of the Paleogene calcareous nannofossil genus Hornibrookina. Micropaleontology, 68(1), 85-113, https://doi.org/10.47894/mpal.68.1.04
Coverage:
Median Latitude: 14.465224 * Median Longitude: -32.572024 * South-bound Latitude: -65.160000 * West-bound Longitude: -77.047700 * North-bound Latitude: 55.673500 * East-bound Longitude: 176.302800
Date/Time Start: 1974-11-16T00:00:00 * Date/Time End: 2007-10-01T00:00:00
Minimum Elevation: -3175.0 m * Maximum Elevation: 3.7 m
Event(s):
39-356 * Latitude: -28.287000 * Longitude: -41.088000 * Date/Time: 1974-11-16T00:00:00 * Elevation: -3175.0 m * Penetration: 741 m * Recovery: 310.6 m * Location: South Atlantic/PLATEAU * Campaign: Leg39 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 42 cores; 396 m cored; 9.5 m drilled; 78.4 % recovery
113-689B * Latitude: -64.517000 * Longitude: 3.099900 * Date/Time Start: 1987-01-16T08:00:00 * Date/Time End: 1987-01-18T06:45:00 * Elevation: -2091.0 m * Penetration: 297.3 m * Recovery: 229.45 m * Location: South Atlantic Ocean * Campaign: Leg113 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 33 cores; 297.3 m cored; 0 m drilled; 77.2 % recovery
113-690C * Latitude: -65.160000 * Longitude: 1.204800 * Date/Time Start: 1987-01-21T07:00:00 * Date/Time End: 1987-01-23T20:30:00 * Elevation: -2925.0 m * Penetration: 321.2 m * Recovery: 177.19 m * Location: South Atlantic Ocean * Campaign: Leg113 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 23 cores; 200.6 m cored; 0 m drilled; 88.3 % recovery
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Binary Object | Binary | Watkins, David K | |||
| 2 | Binary Object (Media Type) | Binary (Type) | Watkins, David K | |||
| 3 | File content | Content | Watkins, David K | |||
| 4 | Binary Object (File Size) | Binary (Size) | Bytes | Watkins, David K |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Basic curation (CurationLevelB)
Size:
4 data points
Data
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| 1 Binary | 2 Binary (Type) | 3 Content | 4 Binary (Size) [Bytes] |
|---|---|---|---|
| Supplementary_Data_2.xlsx | application/vnd.openxmlformats-officedocument.spreadsheetml.sheet | Hornibrookina biometric data: easurements taken from SEM microphotographs (published and previously unpublished) to determine the number and arrangement of the bars or bar-like structures found in the nannofossil central areas of different Hornibrookina species | 35 kBytes |
| Supplementary_Data_1.xlsx | application/vnd.openxmlformats-officedocument.spreadsheetml.sheet | Hornibrookina SEM data: measurements from light microphotographs for all Hornibrookina species include coccolith length and width measured along the cardinal axes of the elliptical nannofossils. Additional measurements of the length and width of the central areas of specimens from the Hornibrookina teuriensis-H. edwardsi lineage were taken to compare this feature for its taxonomic significance | 22.7 kBytes |