Pollen from <i>Protobombus messelensi</i> (IMAGE) Cell Press Caption This photo shows isolated pollen from the leg of ancient bee Protobombus messelensi. Credit Engel and Wappler FIS MeI 6388. Usage Restrictions Credit Required. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.