GMAT Sentence Correction (SC) | Fossils of the arm of a sloth found in Puerto Rico in 1991,

Hi e-gmat,

Hi Experts,

Source: Explanation links provided under OG quiz SV.

Fossils of the arm of asloth found in Puerto Rico in 1991,and dated at 34 million years old, made it the earliest known mammal of the Greater Antilles Islands.

Isn't grammatically in this choice (A) "Found" modifies "SLOTH" when meaning wise it should modify "FOSSILS".

Sloth found and dated.

(D) sloth, found in Puerto Rico in 1991, have been dated at 34 million years old, making the
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