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nautiloid n stresses
geol.	наутилоидный; похожий на раковину наутилуса; наутилоид
Gruzovik, paleont.	наутилоидея (any of various marine cephalopod mollusks formerly classified in the subclass Nautiloidea, including the nautiluses and numerous extinct species known only from fossils)
zool., paleont.	наутилоидея

nautiloid: 4 phrases in 2 subjects

Paleontology	2
Zoology	2