かへいせき
貨幣石
1. nummulite
2. NummuliteA nummulite is a large lenticular fossil, characterized by its numerous coils, subdivided by septa into chambers. They are the shells of the fossil and present-day marine protozoan Nummulites, a type of foraminiferan. Nummulites commonly vary in diameter from 1.3 cm (0.5 inches) to 5 cm (2 inches) and are common in Eocene to Miocene marine rocks, particularly around southwest Asia and the Mediterranean (e.g. Eocene limestones from Egypt).
Read “Nummulite” on English Wikipedia
Read “貨幣石” on Japanese Wikipedia
Read “Nummulite” on DBpedia
Read “Nummulite” on English Wikipedia
Read “貨幣石” on Japanese Wikipedia
Read “Nummulite” on DBpedia
Discussions
Log in to talk about this word.