Where does “periostracal” come from?

periostracal (English) comes from English periostracum, from English ostracum, from New Latin ostracum, from Ancient Greek ὄστρακον, from Ancient Greek δέρμα, from Ancient Greek γλυφή, from Ancient Greek -ῐ́ᾱ, from Proto-Indo-European -íh₂ — Creates collective nouns, which refer to groups...

periostracal (English): Of or pertaining to periostracum

Definitions

Of or pertaining to periostracum

Ancestry of “periostracal”, step by step

Step	Language	Word	Meaning
1	English	periostracum	The proteinaceous outer sheath of many molluscan...
2	English	ostracum	A fragment of pottery; The middle layer of a...
3	New Latin	ostracum	—
4	Ancient Greek	ὄστρακον	earthen vessel; the hard shell of animals such as...
5	Ancient Greek	δέρμα	skin, hide
6	Ancient Greek	γλυφή	carving, carved work; hole cut
7	Ancient Greek	-ῐ́ᾱ	{{l\|en\|-ia}}; "suffix forming abstract feminine...
8	Proto-Indo-European	-íh₂	—
9	Proto-Indo-European	-h₂	Creates collective nouns, which refer to groups...

Every word from Proto-Indo-European -h₂ →Every word from Ancient Greek -ῐ́ᾱ →Every word from Ancient Greek γλυφή →