planospirally
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planospirally — pla·no·spirally … English syllables
Ceratitida — Ceratites nodosus Upper Muschelkal Germany Scientific classification … Wikipedia
seashell — /see shel /, n. the shell of any marine mollusk. Also, sea shell. [bef. 900; OE saescill (not recorded in ME) see SEA, SHELL] * * * hard exoskeleton of marine mollusks such as snails, bivalves, and chitons that serves to protect and support… … Universalium