-
American ratsnakes (Pantherophis
obsoletus complex)".
Rutgers Newark,
Earth &
Environmental Science. "Pantherophis Fitzinger, 1843—North
American Ratsnakes"....
-
Ziswiler V (2002). "Molecular
systematics and
phylogeny of Old and New
World ratsnakes,
Elaphe auct., and
related genera (Reptilia, Squamata, Colubridae)" (PDF)...
-
carinata among living colubrid snakes.
Despite their large size,
oriental ratsnakes are
usually quite slender with even a
specimen of 2 m (6 ft 7 in) commonly...
- with dark
edges on
several dorsal scales. As they mature,
rhinoceros ratsnakes change color to
steel grey at
about 12–14 months, then to a
bluish green...
-
Ziswiler V (2002). "Molecular
Systematics and
Phylogeny of Old and New
World ratsnakes,
Elaphe Auct., and
related genera (Reptilia, Squamata, Colubridae)" (PDF)...
- 37-41 Helfenberger,
Notker (2001).
Phylogenetic relationship of Old
World Ratsnakes based on
visceral organ topography, osteology, and
allozyme variation...
- more
likely to use the
water cavities than non-gravid
females or male
ratsnakes.
Gravid females prefer edge
habitat more
extensively than
males and non-gravid...
- RLTS.T47755764A47755773.en.
Retrieved 19
November 2021.
Elaphe climacophora at the Reptarium.cz
Reptile Database.
Accessed 3
January 2021.
Ratsnakes.com...
-
taeniurus helfenbergeri – Helfenberger's
Beauty Snake -
Ratsnake Information". www.
ratsnakes.info.
Archived from the
original on 2017-03-28. Retrieved...
- ; Joger, U. & Wink, M. 2001
Phylogenetic relationships among European ratsnakes of the
genus Elaphe Fitzinger based on
mitochondrial DNA
sequence comparisons...
