Iowa R. Civ. P. 1.278
As amended through May 24, 2024
Where persons composing a class which may be increased by others later born, do or may make a claim affecting specific property involved in an action to which all living members of the class are parties, any others later born shall also be deemed to have been parties to the action and bound by any decree rendered therein.
Iowa. R. Civ. P. 1.278