Complex sentence: Because so little is known of the animal, its relationships are unclear; however the jaws resemble Archaeopteryx, Troodontidae and some Dromaeosauridae in having a strong groove on the lateral surface.
Split into simpler sentences: Because so little is known of the animal, its relationships are unclear. However, the jaws resemble Archaeopteryx, Troodontidae and some Dromaeosauridae, in having a strong groove on the lateral surface.