Answers are grounded in this paper and cite their sources.
(1959). Metopism and its correlation with the development of the frontal sinuses. Acta Radiologica: Vol. 51, No. 5, pp. 343-352.
No takes yet. Share an insight, caveat, or question.
Marciniak et al. (1959) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: