Your Average Sized Bat

Measuring in at approximately 14 cm (5.5 in) long from nose to tail Icaronycteris was just a little larger than the Little Brown Bat (Myotis lucifugus), the most common bat in North America. The wingspan of Icaronycteris 37 cm (15 in) is one and a half times the span of M. lucifugus. However impressive that sounds, we have to realize that Icaronycteris is still a rather small animal and most likely weighed around what M. lucifugus does (up to 14 grams) and that makes it a relatively small mammal, and a small bat specifically.