| TRIMORPHODON biscutatis |
|||
|
biscutatus |
lyrophanes |
lambda | quadruplex |
 |
 |
 |
 |
| COMMON LYRE SNAKE | BAJA LYRE SNAKE | SONORA LYRE SNAKE | XXXX |
| vandenburghi | vilkinsonii | tau | |
 |
 |
 |
|
| WESTERN LYRE SNAKE | TEXAS LYRE SNAKE | MEXICAN LYRE SNAKE | |