It's just a fact. "Stones" are internal on dinosaurs, so the author was speaking of a mammal.
Well Barbarian you're assuming the Hebrew word pachard means stone ? In all 48 occurrences it means "Fear" not show a meaning to stone, or testicles or even thigh. Rather than nit pick on Hebrew words hardly used and no sure what was intended as to its meaning, why not concentrate on the Hebrew words we can be certain of ?
Job 40:15 ¶ Behold now behemoth, which I made with thee; he eateth grass as an ox.
16 Lo now, his strength is in his loins, and his force is in the navel of his belly.
17 He moveth his tail like a cedar:
the sinews of his stones are wrapped together.
18 His bones are as strong pieces of brass; his bones are like bars of iron.
The animal is large, is a herbivore, has a tail like a cedar tree. with heavy strong bones....
Now I do not know of any mammal large, with a large tail, and heavy strong bones....
More likely a dinosaur...
And again you're assuming all prehistoric animals were reptiles, and that all reptiles have internal sexual gonads, we are not sure if this was so for all dinosaur like animals....
Secondly "
the sinews of his stones are wrapped together." does not say the stones are external anyway....sinews are things internal, so maybe it saying the stones are internally sinewed and wrapped together... Just as reptiles have them....
Job 40:21 He lieth under the shady trees, in the covert of the reed, and fens.
22 The shady trees cover him with their shadow; the willows of the brook compass him about.
How many large mammals lay under reeds, tree ferns and such fens, in brook like swamps? dinosaurs did
I think you are nit picking grammar because the implications are opposing a viewpoint you have, forgive me if I am wrong, but how does this phrase say anything specific about these "stones" anyway ?
The other phrases in Job are easier to figure out, so why not go with these ?
Shalom