a subdivision of the devonian system of america;
so named from hamilton, madison co., new york. it includes the marcellus, hamilton, and genesee epochs or groups. ·see the chart of geology.
a subdivision of the devonian system of america;
so named from hamilton, madison co., new york. it includes the marcellus, hamilton, and genesee epochs or groups. ·see the chart of geology.
Webster English vocab. Английский словарь Webster. 2012