Turtles' breathing evolved at a turtle's pace

Hodograph Turtles

In classical turtle graphics a line is drawn to connect the turtle’s position vector before and after executing each FORWARD command. A hodograph turtle shadows the classical turtle and draws a line connecting the classical turtle’s direction vector before and after executing each TURN command. Here we study examples of the hodograph turtle in action along with several extensions. We show that ...

Sea turtles

their disciplines, it seemed a possibly useful contribution to write a book that would draw from all the relevant disciplines about the past, from primatology to historical linguistics, with genetics as the common thread to weave all these findings together into a coherent narrative. I was amazed at how much detail can now be filled in on the largely blank pages of human prehistory extending fr...

Behavioral responses of hatchling painted turtles (Chrysemys picta ) and snapping turtles (Chelydra serpentina ) at subzero temperatures

We monitored behavioral responses of cold-acclimated hatchling painted turtles (Chrysemys picta ) indigenous to Nebraska and hatchling snapping turtles (Chelydra serpentina ) indigenous to Nebraska and Arkansas during cooling (0.18C/min) to temperatures as low as ÿ198C. All turtles made exploratory movements during cooling and locomotion occurred at temperatures as low as ÿ2 to ÿ48C, but C. pic...

A phylogenomic analysis of turtles.

Molecular analyses of turtle relationships have overturned prevailing morphological hypotheses and prompted the development of a new taxonomy. Here we provide the first genome-scale analysis of turtle phylogeny. We sequenced 2381 ultraconserved element (UCE) loci representing a total of 1,718,154bp of aligned sequence. Our sampling includes 32 turtle taxa representing all 14 recognized turtle f...

Banks and Turtles