It has an eight-plated shell wall with the rostrum partially fused with adjacent rostrolatera.

The suture lines are visible only from the inside, thus in exterior view, the shell appears to have six wall plates.

[1]: 988 [3]: 83–84 [4] Diagnostic soft part characteristics, as described in Poltarukha, 2006[3]: 83–84  include a tridentate mandible and presence of a multi-jointed caudal appendage.

Pseudoctomeris is found in less agitated environments than most Chthamaloidea, preferring lower littoral to sublittoral habitats,[3]: 84  on rocky shores.

[6]: 1385 Pseudoctomeris sulcatus range extends to South Japan, China, and Taiwan.