description Echinodiscus bisperforatus Overview
Echinodiscus bisperforatus is an extant species of sand dollar, a type of flat, burrowing sea urchin in the order Clypeasteroida. First described by Leske in 1778, the species is recognized by its distinctive, flattened calcium carbonate test. Its most defining physical characteristic is the presence of two elongated, slit-like perforations that pass horizontally through the rear margin of its body. These holes are adaptations for moving water and facilitating movement across the sandy ocean floor.
help Echinodiscus bisperforatus FAQ
What is Echinodiscus bisperforatus?
Echinodiscus bisperforatus is an extant sand dollar, meaning it is still living today rather than known only from fossils. It is a flat, burrowing sea urchin in the order Clypeasteroida.
When was Echinodiscus bisperforatus first described?
The species was first described by Leske in 1778. Its scientific identity is tied to its flattened calcium carbonate test, the rigid shell-like structure of a sand dollar.
What does Echinodiscus bisperforatus look like?
It has the flattened body typical of a sand dollar and a calcium carbonate test. The species is especially recognized by its distinctive flat form and the paired openings reflected in its name.
Is Echinodiscus bisperforatus a sea urchin or a shellfish?
It is a sea urchin, not a mollusk or shellfish. Sand dollars are echinoderms, and Echinodiscus bisperforatus belongs to the burrowing clypeasteroid group.
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