Bivalvia - Cardiida - Cardiidae

Alternative combinations: Cardium (Trachycardium) stiriatum, Trachycardium stiriatum

Synonyms: Cardium (Trachycardium) durun Brown and Pilsbry 1913, Trachycardium durum Brown and Pilsbry 1913

Belongs to Trachycardium (Phlogocardia) according to W. P. Woodring 1982

Sister taxa: Trachycardium (Phlogocardia) belcheri, Trachycardium (Phlogocardia) cestum, Trachycardium (Phlogocardia) leonense, Trachycardium (Phlogocardia) lingualeonis

Type specimens:

• Trachycardium (Phlogocardia) stiriatum: ANSP 1755, a shell
• Trachycardium durum: ANSP (no number), a shell.

Average measurements (in mm): shell 33.9 x 31.6