Unknown foliose lichen

Unknown foliose lichen

Observation - Unknown foliose lichen. Description: Found on fallen oak twig. Are these soralia on the thallus margin? And are the black dots also reproductive structures? I'm trying to get my head round lichen anatomy!

Found on fallen oak twig. Are these soralia on the thallus margin? And are the black dots also reproductive structures? I'm trying to get my head round lichen anatomy!