The ventral valve, also known as the pedicle, was covered with spines externally and the inside was rough, being covered by numerous cone-shaped protrusions.
The inside of this valve was rough, being covered by numerous cone-shaped protrusions. The ventral valve, also known as the pedicle, was covered with spines externally.
The ventral valve, also known as the pedicle, was covered with spines externally. The inside of this valve was rough, being covered by numerous cone-shaped protrusions.
The ventral valve, also known as the pedicle, was covered with spines externally. The inside of this valve was rough, being covered by numerous cone-shaped protrusions.