Assertion: sand dollar's symmetry | /r/HasProperty | five parts
Facets:
Source sentences:
text: The irregular echinoids have a front, a back and basic bilateral symmetry on top of the "normal" pentameral symmetry (five parts around a center) that regular echinoids possess.
text: The irregular echinoids have a front, a back and basic bilateral symmetry on top of the "normal" pentameral symmetry (five parts around a center) that regular echinoids possess.