Complexity character scores for fossil and extant vascular plant reproductive structures

Andrew Leslie
Morphological diversity and complexity are notable features of multicellular life, although whether they evolve gradually or in early bursts is unclear. Vascular plant reproductive structures, such as flowers, are familiar examples of complicated morphology, and here we analyze changes in complexity over time using a simple approach based on the number of part types. We find that reproductive complexity increased in two pulses separated by nearly 250 million years of stasis, including an initial Devonian...
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8 downloads reported since publication in 2021.

These counts follow the COUNTER Code of Practice, meaning that Internet robots and repeats within a certain time frame are excluded.
What does this mean?