Where does “tympanosquamous” come from?

tympanosquamous (English) comes from English tympano, from Italian timpano, from Latin tympanum, from Ancient Greek τύμπανον, from Ancient Greek τύπτω, from Proto-Indo-European (s)tewp-, from Proto-Indo-European (s)tew- — to push, to hit.

Ancestry of “tympanosquamous”, step by step

tympanosquamous traces back through two separate lines of ancestry.

via English tympano

StepLanguageWordMeaning
1EnglishtympanoA kettledrum
2Italiantimpanoeardrum, tympanum; drum; gable, tympanum
3Latintympanumdrum, timbrel, tambour, tambourine
4Ancient Greekτύμπανονdrum, kettledrum; drumstick, staff, cudgel;...
5Ancient Greekτύπτωto beat, strike, smite; to beat, strike oneself
6Proto-Indo-European(s)tewp-to push, to stick
7Proto-Indo-European(s)tew-to push, to hit

via English squamous

StepLanguageWordMeaning
1EnglishsquamousCovered with, made of, or resembling scales;...
2Latinsquāmōsusscaly
3Latin-ōsusose, -ous, -ful (full of or overly prone to)
4Old Latin-ōssus
Every word from Proto-Indo-European (s)tew-Every word from Proto-Indo-European (s)tewp-Every word from Ancient Greek τύπτω