TABLE 5. Comparison between the nominal Saurorhamphus species and the species from El Chango and El Espinal quarries herein studied (based on data from Goody 1969, Chalifa 1985, and Bannikov and Bacchia 2005). Gray areas show shared characters.

 
  Saurorhamphus
freyeri 		Saurorhampus
judeaensis 		Saurorhampus
giorgiae 		Saurorhamphus sp.
(studied here)
  Head length
(as % of SL)

33

37-40

37

48

  Dorsal fin origin into the trunk
 In the posterior half
In the anterior half
  Position of pelvic fin
 		 Located closer to the pectoral fin than to the anal fin
 		 Near the meddle between pectoral and anal fin Located closer to the anal fin than to the pectoral fin
  Length of the anterior dorsal fin ray Relatively short Relatively long