0 plural of umbilicus specialized
Shells are subdiscoidal to globose with variable umbilici and sutures with 10 to 30 lobes, which tend to be subequal.
They are characterized by thinly discoidal to globular shells with variable umbilici and sculpture.
NYA ORD
European
May 10, 2021
DAGENS ORD
Shimmer
umbilici
