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Upper eocene gilled mushroom from the dominican republic
Summary
The earliest known gilled mushroom, Coprinites dominicana, was discovered in Dominican Republic amber. This fossil suggests mushrooms evolved much earlier than previously thought.
Area of Science:
- Paleomycology
- Evolutionary Biology
- Fungal Paleontology
Background:
- The fossil record of gilled mushrooms (Agaricales) is sparse, particularly from tropical regions.
- Understanding the evolutionary history of Basidiomycetes is crucial for fungal phylogeny.
Purpose of the Study:
- To describe a newly discovered fossil mushroom from Dominican amber.
- To determine the phylogenetic and evolutionary significance of this fossil.
Main Methods:
- Paleontological analysis of fossilized fungal remains in amber.
- Morphological comparison with extant and fossil Agaricales.
Main Results:
- Identification of Coprinites dominicana gen.nov., spec.nov., the earliest known gilled mushroom.
- This fossil is the first determinable fleshy agaric and the only known tropical fossil mushroom.
- The modern appearance of the fossil suggests an ancient origin for mushrooms, predating the early to mid-Tertiary.
Conclusions:
- Coprinites dominicana provides critical evidence for the early evolution of gilled mushrooms.
- The discovery challenges existing timelines for fungal diversification.
- This finding has significant implications for understanding the evolutionary development of Basidiomycetes.
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