Citatidae

Citatidae is a proposed taxonomic family of fossil marine invertebrates. This family is part of the order Stylinida, which itself belongs to the class Calcarea. Calcarea, commonly known as calcarean sponges, are a class of sponges characterized by their spicules made of calcium carbonate. The extinct order Stylinida is distinguished by its typically massive, calcareous skeletons, often exhibiting complex growth patterns.

The classification of Citatidae is based on the study of fossilized remains, primarily their skeletal structures. The defining characteristics of Citatidae are derived from the morphology of these preserved skeletons, which are preserved in ancient sedimentary rocks. These fossils offer insights into the diversity of early marine life and the evolutionary history of sponges.

The placement of Citatidae within the broader classification of sponges is subject to ongoing research and interpretation by paleontologists. As new fossil evidence is discovered and analytical techniques improve, the precise relationships and taxonomic status of groups like Citatidae can be refined. Understanding such extinct groups contributes to our knowledge of prehistoric marine ecosystems and the evolution of skeletal biomineralization.