Chinese scientists uncover 410-million-year-old miniature plant fossils

Researchers from the Institute of the Chinese Academy of Sciences have uncovered fossils of a 410-million-year-old "miniature" plant in Guizhou Province. The discovery offers new insights into the strategies early plants employed to colonise land, a pivotal event in Earth's ecological history. This is reported by Xinhua News Agency, a partner of TV BRICS.

Evidence from plant macrofossils suggests that plants began their transition from aquatic to terrestrial environments approximately 430 million years ago. This transformative process, often compared to the Cambrian Explosion, dramatically reshaped the planet’s ecosystems. Over tens of millions of years, terrestrial plant diversity and complexity surged, laying the foundation for modern ecosystems.

The discovery provides a unique glimpse into this critical era. Measuring just 45 millimetres in height, with sporangium spikes only 5.8 to 10.8 millimetres long, this diminutive plant contrasts sharply with contemporaneous species, which typically ranged from 100 to 200 millimetres.

Further analysis by the research team revealed that plants during this period evolved two distinct survival strategies. Smaller plants required minimal nutrients and reproductive investment, enabling rapid life cycles in unstable environments. In contrast, larger sphenophytes demanded more resources and were better suited to stable habitats.

The findings offer new perspectives on how plants adapted to land-based environments over 400 million years ago, shaping the vibrant ecosystems we see today, the source claims.

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