Fig 1.
Distribution of Algae Score through time, from the Late Cretaceous (136.4 Ma) through the Pleistocene (2.58 Ma). a) Time binned in roughly 10 million year intervals following [19]. b) Time binned by stage (stages determined from PARED). Algae Score 1 is red, Algae Score 2 is pink, and Algae Score 3 is white.
Table 1.
Description of Algae Score.
Fig 2.
Summary of the association between reef type, diversity, and CCA abundance (all ages considered together).
a) Histogram of reef type by Algae Score; definitions modified from [18]. Ecological reefs (dark green) are composed of reef building organisms that form a rigid, topographically complex structure with syndepositional relief. Reef mounds/bioherms (light green) have abundant skeletal organisms and syndepositional relief, but no clear framework; they may also contain abundant micrite and be matrix supported, although baffling can be common. Biostromes (light blue) are dense growths of skeletal organisms without syndepositional relief. Framework may or may not be present. b) Box plot showing the distribution of generic diversity for all reef dwellers, including corals. If an organism was only recorded as present, without any corresponding taxonomic information, diversity for that organism was set as equal to one. If taxonomy was only identified above the generic level, each taxon was considered once, as with genera. Reef dweller genera were recorded from the PBDB, as well as from comprehensive literature review. Algae Score 1 is red, Algae Score 2 is pink, and Algae Score 3 is white. c) Box plot showing the distribution of generic diversity for corals. If coral was only recorded as present, without corresponding taxonomic information, diversity was set as equal to one. If taxonomy was only identified above the generic level (such as family or order), each taxon was considered once, as with genera. Coral genera were recorded from the PBDB, as well as from comprehensive literature review. Color scheme follows Fig 2b.