Graticula

Graticula, formerly incorrectly named Craticula,^[1] is a genus of Palaeozoic coralline alga.^[2] They form the framework of reef rocks in the Silurian of Gotland, from the Högklint, Slite and Halla groups.^[3]

Graticula Temporal range: Wenlock PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Domain:	Eukaryota
Clade:	Archaeplastida
Division:	Rhodophyta
Class:	Florideophyceae
Stem group:	Corallinales
Family:	Graticulaceae
Genus:	Graticula Brooke & Riding, 1998
Species
G. gotlandica (Rothpletz 1908)
Synonyms
Craticula Brooke & Riding Solenopora gotlandica Rothpletz 1908 Solenopora gracilis Garwood & Goodyear

The Graticulaceae closely resemble the Cretaceous Solenoporaceae, and are only really differentiated by their stratigraphic position.^[2]

Graticula mineralized with calcite.^{[4][clarification needed]}