As a record in Science shows; “The latest discovery in a cache of ancient Burmese amber has revealed something completely unexpected: an extinct squidlike organism called an ammonite, which swam Earth’s seas while dinosaurs dominated the land 100 million years ago.”
In addition, “mites, spiders, millipedes, cockroaches, beetles, flies, wasps, and marine gastropods” were found on the amber.
This study was reported in the Proceedings of the National Academy of Sciences.