Sentence:  The <WSD>loggerhead</WSD> ("S"["ternotherus"] "m"["inor"] "minor") and stripe-necked ("S. m. peltifer") musk turtles represent two distinct subspecies of a species with a tan to brown carapace with black streaking and overlapping scutes down the center of the carapace. ... The head of old <WSD>loggerhead</WSD> musk turtles becomes disproportionately enlarged, as does the front half of the entire shell. 
Meaning of the word marked with <WSD> tags:  The (loggerhead musk turtle) ((ver=181128)), a large-headed turtle endemic to the United States.