Fossil Bats 105 



Table 2. Comparison of measurements (in mm) of the humerus of fossil bats 

 from Vero with Recent Florida bats. 1 





B 



o 



"5 



s 



>< 

 o 



u 



*3 



in 



1 



.a * 



s: -c 



1-> C/1 



width of distal 



articular 



surface 



Lasiurus inter me dius 











Recent 





4.1 ±0.1 



13 

 (3.9-4.3) 



1.6 ± 0.1 



11 

 (1.4-1.8) 





Fossil 











V7202 





4.1 



1.7 





Lasiurus cinereus 











Recent 





4.7 

 3 

 (4.6-4.8) 



1.8 

 i 









i 





Lasiurus seminolus 











Recent 



26.8 ± 1.4 



10 

 (24.4-28.9) 



3.2 ±0.2 



16 

 (2.9-3.5) 



1.4 ± 0.1 



16 



(1.2-1.6) 



2.4 ±0.1 



10 

 (2.3-2.6) 



Lasiurus cf. seminolus 











Fossil 











V7204 



24.7 





1.2 





V7205 





3.1 



1.4 





V7206 





3.0 







V7207 









2.3 



Lasiurus borealis 











Recent 



26.9 ± 0.9 

 6 



(25.8-28.5) 



3.3 ±0.1 



13 

 (3.1-3.4) 



1.4 ± 0.1 



10 



(1.2-1.5) 



2.4 ±0.1 

 6 



(2.3-2.4) 



Nycticeius humeralis 











Recent 



20.9 ± 0.9 



5 

 (19.8-22.2) 



2.9 ±0.1 



18 

 (2.8-3.1) 



1.1 ±0.1 



17 

 (1.1-1.3) 



2.1 ±0.1 



4 

 (1.9-2.2) 



Fossil 



20.9 



3.0 ±0.1 



1.2 ±0.1 



2.3 ±0 





2 



7 



8 



4 





(20.3-21.5) 



(2.8-3.2) 



(1.1-1.3) 



2.3 



Mean, standard deviation, sample size, and observed range (in parentheses), 

 respectively, are given for Recent specimens and fossils of Nycticeius humeralis. 



in Lasiurus is attached to the distal articular surface for most of its 

 length. 



The humeri referred to L. cf. seminolus are much smaller than the 

 corresponding element in L. inter me dius and L. cinereus. There are two 

 smaller species of Lasiurus known from Florida, L. seminolus and L. 

 borealis, that have humeri within the size range of the fossils. The 



