Quereuxia
From Wikipedia, the free encyclopedia
| Quereuxia | |
|---|---|
 | |
| Quereuxia angulata | |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Genus: | †Quereuxia |
Quereuxia is an extinct genus of aquatic angiosperms known from fossil leaves and leaf rosettes primarily dating to the Late Cretaceous period.[1] It also survived into the Paleocene,[2] with Quereuxia angulata documented as a member of aquatic plant communities persisting across the Cretaceous-Paleogene boundary in northeastern Russia.[3] These plants are notable for their floating growth habit, with morphological features suggesting adaptation to still freshwater environments.[4] Fossil Quereuxia leaves from the Upper Cretaceous of the Amur region in Russia preserve ovipisition marks from damselflies and dragonflies, providing evidence of plant-insect interactions in ancient freshwater ecosystems.[5]