description Phormosoma rigidum Overview
Phormosoma rigidum is a species of deep-sea sea urchin in the family Phormosomatidae, within the echinoid order Echinothurioida. It belongs to a group of irregular-looking echinoids associated with marine environments beyond ordinary shallow-water habitats. The species is distinguished taxonomically from other members of Phormosoma and is represented in zoological literature by its scientific name rather than by a widely used common name.
help Phormosoma rigidum FAQ
What is Phormosoma rigidum?
Phormosoma rigidum is a deep-sea sea urchin in the family Phormosomatidae. It belongs to the echinoid order Echinothurioida.
Does Phormosoma rigidum live in shallow water?
It is associated with deep-sea marine environments beyond ordinary shallow-water habitats. Its classification and ecology place it among specialized deep-water echinoids.
What family does Phormosoma rigidum belong to?
Phormosoma rigidum belongs to the family Phormosomatidae. It is also placed in the order Echinothurioida within the echinoids.
What makes Phormosoma rigidum unusual?
It has a deep-sea lifestyle and an irregular-looking echinoid form. That distinguishes it from the familiar regular sea urchins commonly seen in shallow coastal water.
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