Did hard substrate taxa diversify prior to the Great Ordovician Biodiversification Event?

Franziska Franeck & Lee Hsiang Liow
The Great Ordovician Biodiversification Event (GOBE) refers to one of the greatest increases in biodiversity during the Phanerozoic. Recent studies have shown that this taxonomic increase can be attributed to elevated origination rates around the Dapingian-Darriwilian boundary in the Middle Ordovician, while extinction rates stayed relatively constant throughout the Ordovician. Even though this global pattern of origination and extinction appears similar across diverse groups and geographic areas, earlier studies suggested that hard substrate taxa may...
1 citation reported since publication in 2020.
32 views reported since publication in 2020.

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?