New research has shown that Hammers and Frogspawn, alongside some of their variants, aren't actually Euphyllia. The Euphyllia genus is set to shrink dramatically to reflect the fact that these species are being reclassified to a new genus - Fimbriaphyllia. The old Euphyllia genus will be left with only the Torch corals (E. glabrescens and E. paraglabrescens), the Bubble corals (E. baliensis), and the grape corals (E. cristata). The new Fimbriaphyllia genus will contain the Hammer coral (F. ancora), Frogspawn corals (F. divisa and F. paradivisa), Anchor coral (F. parancora), and the species F. yaeyamensis, which doesn't seem to have a common name.
The change is due to a variety of factors, but research indicates that these two groups originated from different ancestors and have distinctly different polyp morphology and colony structure, to the extent that they are different genera.
You can read the research here: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5719963/
Certain websites, such as the US government's National Center for Biotechnology Information taxonomic database (https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi), and the online marine encyclopedia Reeflex (https://www.reeflex.net/kategorie/94.html#euphyllia) have already been updated to reflect this fact.
This picture illustrates some of the changes based on a phylogenetic classification.
The change is due to a variety of factors, but research indicates that these two groups originated from different ancestors and have distinctly different polyp morphology and colony structure, to the extent that they are different genera.
You can read the research here: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5719963/
Certain websites, such as the US government's National Center for Biotechnology Information taxonomic database (https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi), and the online marine encyclopedia Reeflex (https://www.reeflex.net/kategorie/94.html#euphyllia) have already been updated to reflect this fact.
This picture illustrates some of the changes based on a phylogenetic classification.