The amphisbaenian deviated from obstacles (small stones with mean diameter of approximately 20 mm) on two occasions while moving along the trail, after which it soon returned to the trail and continued to move forward (Fig.
The reptile segment (59 pages) covers all four reptilian orders: Testudines (turtles and tortoises), Crocodilia, Rhynchocephalia (tuataras), and Squamata (amphisbaenians, lizards, snakes).
But the two largest orders - those of snakes and lizards - were not fully analyzed, nor was the order of legless amphisbaenians. Given these research gaps, and the high number of threatened species in the three fully assessed orders, the Red List's authors surmise that "the overall estimate of 20 percent of reptiles species as threatened is probably low for the entire class."
The tympanic membrane in many fossorial (burrowing) and semi-fossorial Lizards, such as the legless Anniella, as well as in other Reptiles, such as the Tuatara, Amphisbaenians, and, of course, Snakes are absent (Tumarkin, 1968; Kaplan, 2014).
Squamates (lizard, snakes and amphisbaenians), with the exception of fragmentary remains from Africa and India, are only known from localities in northern continents (Laurasia).