The series of molecular signals initiated by binding of a fibroblast growth factor to its receptor on the surface of al cell in the epidermis resulting in the formation of the mammary line. The mammary line is a ridge of epidermal cells that will form the mammary placodes. (Gene Ontology, GO_0060595)
1 genes participating in the fibroblast growth factor receptor signaling pathway involved in mammary gland specification biological process from the curated GO Biological Process Annotations 2025 dataset.