Cyclolobinae Cyclolobinae Cyclolobinae Zittel 1895

Permien moyen à supérieur (Roadien à Changhsingien).
Diagnose en Anglais de Glenister & Furnish, 1987 (la deuxième phrase, décrivant le lobe ventral, n’étant pas bien claire pour moi) : "advanced cyclolobids with 6-12 pairs of denticulate external lobes across the flanks to the umbilical shoulder, each with extensive denticulation that extends almost to the crest of the saddles. Prongs of the ventral lobe are subequal in width or wider than the corresponding first lateral lobe, and, like the dorsal flank, their ventral side is extensively denticulate. The sutural trace became progressively more strongly arched forward during phylogenesis."

Cyclolobus walkeri

Cyclolobus walkeri
Région Diana - Madagascar
Permien sup.
Diamètre = 6,4 cm (2.52")

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