That's the way they are, they have an exoskeleton.
Maybe for something that small bones are not a good option
no
Genus Chordata is animals with backbones; Spiders do not have a spine, therefore are not Chordata.
A Tarantula is NOT a vertebrate.
All spiders do not have backbones.
They are invertebrates. They do not have back bones.
no they dont
no they dont
No. Nor do any Spiders have a backbone. Spiders' structural support comes from their hard external body panels. They do not have any bones.
no, they dont have backbones
they dont have backbones.
yes they are they dont have backbones
i dont think they do.