Conference
Early Palaeozoic biodiversifications: Plus ça change
| العنوان: | Early Palaeozoic biodiversifications: Plus ça change |
|---|---|
| المؤلفون: | Harper, David, a T, Lefebvre, Bertrand, Servais, Thomas |
| المساهمون: | Durham University, Laboratoire de Géologie de Lyon - Terre, Planètes, Environnement (LGL-TPE), École normale supérieure de Lyon (ENS de Lyon), Université de Lyon-Université de Lyon-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Institut national des sciences de l'Univers (INSU - CNRS)-Université Jean Monnet - Saint-Étienne (UJM)-Centre National de la Recherche Scientifique (CNRS), IUGS |
| المصدر: | 37th International Geological Congress 2024 https://hal.science/hal-04776039 37th International Geological Congress 2024, IUGS, Aug 2024, Busan (Corée), South Korea |
| بيانات النشر: | HAL CCSD |
| سنة النشر: | 2024 |
| المجموعة: | Université de Lyon: HAL |
| مصطلحات موضوعية: | [SDU]Sciences of the Universe [physics], [SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology |
| جغرافية الموضوع: | Busan (Corée), South Korea |
| الوصف: | International audience ; Life has diversified on Earth during the past four billion years. 19 th Century savants presented models for the gradual increase in diversity and complexity of animals during the Phanerozoic, punctuated by some mass extinctions. More recently views have diverged from those espousing gradual change to those focused on sudden, rapid diversity pulses, based on the interrogation of large databases. The new generation of data capture and evaluation relies on big data and sophisticated analytical techniques. Results, however, are not consistent in all the available big databases; each database is not truly global. The origins and early diversifications of groups of animals are diachronous in both time and space, whereas large hikes in biodiversity in some groups are due to intensive study of a number of key continents, mainly North America and Europe, especially Scandinavia, with large numbers of palaeontologists involved. For example new data from China demonstrate there is no Furongian Gap in the late Cambrian, that artificially separated the Cambrian and Ordovician radiations. Instead increasing diversity segues seamlessly through the Cambrian -Ordovician boundary; high-latitude Early Ordovician biotas contain significant numbers of exceptionally-preserved faunas, some more typical of Cambrian Lagerstätten. We are far from de-colonizing our data: much data especially from the global south may continue to change our perception of biodiversity change and continue to fill in gaps in the fossil record. Interestingly, there is another approach that may be more robust. A recent compilation of the first occurrences of higher taxa such as phyla indicates that most were already present in the late Proterozoic and the early Cambrian, corresponding to the concept of the Cambrian Explosion. The cumulative arrival of orders, families, genera show a gradual and long-term increase during the entire Ordovician. As biases are mitigated and new data added, a vision emerges of a single long-term radiation of ... |
| نوع الوثيقة: | conference object |
| اللغة: | English |
| الاتاحة: | https://hal.science/hal-04776039 https://hal.science/hal-04776039v1/document https://hal.science/hal-04776039v1/file/Busan_abstract_2024%20definitive.pdf |
| Rights: | info:eu-repo/semantics/OpenAccess |
| رقم الانضمام: | edsbas.7987D143 |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |