MORPHOLOGICAL VARIATION IN HEMIGORDIUS HARLTONI CUSHMAN & WATERS, 1928: REMARKS ON THE TAXONOMY OF CARBONIFEROUSAND PERMIAN HEMIGORDIOPSIDS. RIPS [Internet]. 31 luglio 2003 [citato 27 luglio 2026];109(2). Disponibile su: https://test-ojs-unimi-it.archicoop.it/index.php/RIPS/article/view/5502