Tympanic bulla of Basilotritus uheni (holotype). Collection number NMNH-P OF-2096. Found near near Beloskelevatoye village, eastern Ukraine. Scanned with Artec Space Spider.
Read about it here: https://www.cambridge.org/core/journals/journal-of-paleontology/article/abs/basilotritus-uheni-a-new-cetacean-cetacea-basilosauridae-from-the-late-middle-eocene-of-eastern-europe/291BF670BF4B3D57664D25C9CBDC8E79