Plagioolithus
| Plagioolithus Temporal range:
| |
|---|---|
| Egg fossil classification | |
| Oofamily: | incertae sedis |
| Oogenus: | †Plagioolithus Imai and Azuma, 2015 |
| Oospecies | |
| |
Plagioolithus is an oogenus of fossil egg. It is from the Early Cretaceous of Japan. It was probably laid by a bird, making it the oldest known fossil bird egg.