flat nail造句

Only their halluxes ( big toes ) have the flat nails or ungulaes that most other primates have.
Both male and females are equipped with a long and hairy tail, flat nail, brown poo, pointed claws.
Sloths possess long, curved claws, while sloth lemurs have short, flat nails on their distal phalanges like most primates.
There are five toes to all the feet, but the first in the fore-feet is rudimentary, and furnished with a flat nail.
It's difficult to find flat nail in a sentence. 用flat nail造句挺难的