Occurrence of the eudemersal radiodont Cambroraster in the early Cambrian Chengjiang Lagerstätte and the diversity of hurdiid ecomorphotypes
| Autor: | Dayou Zhai, Huijuan Mai, Javier Ortega-Hernández, Yu Liu, Denis Audo, Rudy Lerosey-Aubril |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
010506 paleontology biology Paleozoic Ecology Geology Burgess Shale Lagerstätte biology.organism_classification 010603 evolutionary biology 01 natural sciences Cambrian Stage 3 Burgess Shale type preservation Falcatus Adaptive radiation Carapace 0105 earth and related environmental sciences |
| Zdroj: | Geological Magazine. 157:1200-1206 |
| ISSN: | 1469-5081 0016-7568 |
| DOI: | 10.1017/s0016756820000187 |
| Popis: | Radiodonts are a diverse clade of Lower Palaeozoic stem-group euarthropods that played a key role in the emergence of complex marine trophic webs. The latest addition to the group, Cambroraster falcatus, was recently described from the Wuliuan Burgess Shale, and is characterized by a unique horseshoe-shaped central carapace element. Here we report the discovery of Cambroraster sp. nov. A, a new species from the Cambrian Stage 3 Chengjiang Lagerstätte of South China. The new occurrence of Cambroraster demonstrates that some of the earliest known radiodonts had already evolved a highly derived carapace morphology adapted to an essentially eudemersal life as sediment foragers. |
| Databáze: | OpenAIRE |
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