Fossil evidence of core monocots in the Early Cretaceous
| Autor: | Coiffard C, Ingo Manke, Nikolay Kardjilov, Bernardes-de-Oliveira Mec |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
0301 basic medicine Biogeography Plant Science Biology Fossil evidence Plant Roots 01 natural sciences Magnoliopsida 03 medical and health sciences Paleontology History Ancient Phylogeny Fossil Record Fossils Reproduction Crown (botany) Botany Tropics Vegetation FANERÓGAMAS Biological Evolution Cretaceous Plant Leaves Gondwana 030104 developmental biology 010606 plant biology & botany |
| Zdroj: | Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP |
| ISSN: | 2055-0278 |
| DOI: | 10.1038/s41477-019-0468-y |
| Popis: | All the major clades of angiosperms have a fossil record that extends back to more than 100 million years ago (Early Cretaceous), mostly in agreement with molecular dating. However, the Early Cretaceous record of monocots is very poor compared to other angiosperms. Their herbaceous nature has been invoked to explain this rarity, but biogeography could also be an explanation. Unfortunately, most of the Early Cretaceous angiosperm record comes from northern mid-latitudes. The Crato plattenkalk limestone offers a unique window into the Early Cretaceous vegetation of the tropics and has already yielded monocot fossils. Here, we describe a whole monocotyledonous plant from root to reproductive organs that is anatomically preserved. The good preservation of the fossils allowed the evaluation of reproductive, vegetative and anatomical characteristics of monocots, leading to a robust identification of this fossil as a crown monocot. Its occurrence in Northern Gondwana supports the possibility of an early radiation of monocots in the tropics. |
| Databáze: | OpenAIRE |
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