Definition: A broad, low relief crater that results from a phreatic eruption or explosion caused by groundwater contact with hot lava or magma. The maar typically fills with water to form a relatively shallow crater lake.
Definition: One of the series of specimens used to describe a species or infraspecific taxon when neither a single holotype nor a lectotype has been designated. The syntypes collectively constitute the name-bearing type. [Zoo./Bot.]
Definition: One of the series of specimens used to describe a species or infraspecific taxon when neither a single holotype nor a lectotype has been designated. The syntypes collectively constitute the name-bearing type. [Zoo./Bot.]
