I've been reading a bit on this subject that focuses on robust/gracile morphology in early Triassic dinosaurs (particularly theropods) and archosaurs. I originally read that it is a form of sexual dimorphism, and haven't seen anything that contradicts that fact. My question is regarding how they determine that using femurs and femoral ontogeny. I saw a few things about "femur scars"? I've tried multiple times to search the web for information, but come up empty-handed. but I'm assuming these are "growth marks" resulting from the development of an organism and seen in femur bone, correct? Thanks in advance!

sorry no-one seems to know the answer to your question.