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| Format: | Dataset Open Access |
| Sprache: | en |
| Veröffentlicht: |
PANGAEA
2009
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| Schlagworte: | |
| Online-Zugang: | https://doi.org/10.1594/PANGAEA.777716 |
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| _version_ | 1867171782815907840 |
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| author | Wade, Bridget S Olsson, Richard K |
| author_facet | Wade, Bridget S Olsson, Richard K |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | We propose a phenomenon termed “pre-extinction dwarfing” in Cenozoic planktonic foraminifera. High-resolution morphometric analysis shows a reduction in maximum or mean test size in the 2-20 kyr interval preceding the extinction of Pliocene Globorotalia exilis and Globorotalia miocenica from the Caribbean Sea and middle Eocene Morozovelloides crassatus from the western North Atlantic. Through a series of case studies and review of qualitative observations from the literature, we suggest that dwarfing occurs in a number of species of planktonic foraminifera foreshadowing their demise and that such size changes are not just a phenomenon associated with mass extinction events. We propose that this is a common stress-induced pattern that results in diminutive size in the pre-extinction interval. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_777716 |
| institution | PANGAEA |
| language | en |
| publishDate | 2009 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | (Table 1) Test sizes of Morozovelloides crassatus from ODP Site 171-1052 Wade, Bridget S Olsson, Richard K 171-1052B; 171-1052F; AGE; Blake Nose, North Atlantic Ocean; Chamber number; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Event label; Joides Resolution; Leg171B; Morozovelloides crassatus; Morozovelloides crassatus, size; Morozovelloides crassatus, size, standard deviation; Ocean Drilling Program; ODP; Sample code/label; Sample comment We propose a phenomenon termed “pre-extinction dwarfing” in Cenozoic planktonic foraminifera. High-resolution morphometric analysis shows a reduction in maximum or mean test size in the 2-20 kyr interval preceding the extinction of Pliocene Globorotalia exilis and Globorotalia miocenica from the Caribbean Sea and middle Eocene Morozovelloides crassatus from the western North Atlantic. Through a series of case studies and review of qualitative observations from the literature, we suggest that dwarfing occurs in a number of species of planktonic foraminifera foreshadowing their demise and that such size changes are not just a phenomenon associated with mass extinction events. We propose that this is a common stress-induced pattern that results in diminutive size in the pre-extinction interval. |
| title | (Table 1) Test sizes of Morozovelloides crassatus from ODP Site 171-1052 |
| topic | 171-1052B; 171-1052F; AGE; Blake Nose, North Atlantic Ocean; Chamber number; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Event label; Joides Resolution; Leg171B; Morozovelloides crassatus; Morozovelloides crassatus, size; Morozovelloides crassatus, size, standard deviation; Ocean Drilling Program; ODP; Sample code/label; Sample comment |
| url | https://doi.org/10.1594/PANGAEA.777716 |