Conulariida
Conulariida is an extinct order of marine organisms that existed during the Cambrian and Ordovician periods, roughly 500 to 450 million years ago. Often referred to as "conularids," these creatures are notable for their distinctive, conical or tubular fossilized remains, which resemble a hollow, segmented cone. Their exact biological classification has been debated, with some researchers suggesting they may have been related to cnidarians (such as jellyfish or corals), while others propose alternative affiliations with other invertebrate groups.
Conulariids were typically small, ranging from a few millimeters to several centimeters in length, and their
The ecological role of conulariids is also speculative. Some hypotheses suggest they were suspension feeders, filtering
Despite their importance, conulariids remain enigmatic due to the scarcity of complete specimens and the ambiguity