48-million-xyoo-laus pob txha ntawm tus nab mysterious nrog lub zeem muag infrared
Tus nab pob txha uas tsis tshua muaj peev xwm pom hauv lub teeb infrared tau pom nyob rau hauv Messel Pit, UNESCO World Heritage site hauv lub teb chaws Yelemees. Cov kws tshawb fawb paleontologists pom qhov tshwm sim thaum ntxov ntawm cov nab thiab lawv lub peev xwm hnov qab.