Jiuzhaigou National Park, China #1
Breck Bartholomew
Wang Lang Nature Reserve, China
Breck Bartholomew
Cat on a puzzle
Lois Bartholomew
Striped Whipsnake, Masticophis taeniatus
Breck Bartholomew
Marine Iguana, Amblyrhynchus cristatus
Breck Bartholomew
Marine Iguana, Amblyrhynchus cristatus #2
Breck Bartholomew
Green Iguana, Iguana iguana
Breck Bartholomew
White Throated Guenon, Cercopithecus albogularis erythrarchus
J D L Franz Wagner
Frontis to Tractatio de theoria descensus et ascensus gravium obliqui ejusque multiplici application
Joseph Anton Zimermann
Plate 1 from Tractatio de theoria descensus et ascensus gravium obliqui ejusque multiplici applicati
Joseph Anton Zimermann
Plate 2 from Tractatio de theoria descensus et ascensus gravium obliqui ejusque multiplici applicati
Joseph Anton Zimermann
Plate 3 from Tractatio de theoria descensus et ascensus gravium obliqui ejusque multiplici applicati
Joseph Anton Zimermann
Frogs of Costa Rica
T Sinclair
Anoles of Costa Rica
T Sinclair
Snakes and Lizards of Costa Rica
T Sinclair
Snakes and Frogs of Costa Rica
T Sinclair
Basilisk in Costa Rica
T Sinclair
Snakes and frogs of Costa Rica #2
T Sinclair
Beaded Lizard, Heloderma horridum
Friedrich August Schmidt
Beaded lizard, Heloderma horridum #2
Friedrich August Schmidt
Yellow Baboon, Papio Cynocephalus #1
J D L Franz Wagner
Lichtenstein's Hartebeest, Alcelaphus lichtensteinii
J D L Franz Wagner
Lichtenstein's Hartebeest, Alcelaphus lichtensteinii #1
J D L Franz Wagner
Mexican Spiny-tailed Iguana, Ctenosaura pectinata
Elsasser
Mexican Spiny-tailed Iguana, Ctenosaura pectinata #1
Elsasser
Northeastern Spiny-tailed Iguana, Ctenosaura acanthura
Carl Wilhelm Pohlke
Northeastern Spiny-tailed Iguana, Ctenosaura acanthura #1
Carl Wilhelm Pohlke
Eastern Casquehead Iguana, Laemanctus longipes
Carl Wilhelm Pohlke
Eastern Casquehead Iguana, Laemanctus longipes #1
Carl Wilhelm Pohlke
Brown-headed Parrot, Piocephalus cryptoxanthus #1
J D L Franz Wagner
Brown Basilisk, Basiliscus vittatus
Friedrich August Schmidt
Brown Basilisk, Basiliscus vittatus #1
Friedrich August Schmidt
Lander's Horseshoe Bat, Rhinolophus landeri
C H Haas
Dusky Elephant Shrew, Elephantulus fuscus
J D L Franz Wagner
Striped Bush Squirrel, Paraxerus flavovittis #1
J D L Franz Wagner
Striped Bush Squirrel, Paraxerus flavovittis
J D L Franz Wagner
Skull of a Bush Duiker, Sylvicapra grimmia
J D L Franz Wagner
Skull of a Bush Duiker, Sylvicapra grimmia #1
J D L Franz Wagner
Dusky Elephant Shrew, Elephantulus Fuscus #1
J D L Franz Wagner
Lander's Horseshoe Bat, Rhinolophus landeri #2
C H Haas
Hernandez's Helmeted Basilisk, Corytophanes hernandesii
Friedrich August Schmidt
Hernandez's Helmeted Basilisk, Corytophanes hernandesii #1
Friedrich August Schmidt
Brown-breasted Barbet, Pogonornis melanopterus
J D L Franz Wagner
Black Crake, Zapornia flavirostra
J D L Franz Wagner
Black Crake, Zapornia flavirostra #1
J D L Franz Wagner
Beetles of Southern Africa #1
W Wagenschieber
Beetles Of Southern Africa
W Wagenschieber
Spiny Lizards, Sceloporus
Carl Wilhelm Pohlke
Spiny Lizards, Sceloporus #1
Carl Wilhelm Pohlke
Mexican Plateau Horned Lizard and Light-bellied Bunchgrass Lizard
Friedrich August Schmidt
Mexican Plateau Horned Lizard and Light-bellied Bunchgrass Lizard #1
Friedrich August Schmidt
Passenger Pigeon and Red Oak #1
Mark Catesby
African Butterflies
Bernhard Wienker
African Butterflies #1
Bernhard Wienker
African Beetles
Bernhard Wienker
African Beetles #1
Bernhard Wienker
Alligator Lizards #1
Friedrich August Schmidt
Brown Greater Galago or Thick-tailed Bushbaby #1
Hugo Troschel and J D L Franz Wagner
Alligator Lizards from Mexico #1
Friedrich August Schmidt
Skulls of Small African Mammals
A Andorff
Skulls of Small African Mammals #1
A Andorff
Peter's Gerbil, Little Harvest Mouse, and Swamp Rat
J D L Franz Wagner
Peter's Gerbil, Little Harvest Mouse, and Swamp Rat #1
J D L Franz Wagner
Skulls of the Common Duiker and Oribi
J D L Franz Wagner
Skulls of the Common Duiker and Oribi #1
J D L Franz Wagner
Western Bluebill
J D L Franz Wagner
Western Bluebill #1
J D L Franz Wagner
Termites, Macrotermes bellicosus #1
H Hagen
African Beetles, including Dung Beetles
W Wagenschieber
African Butterflies
W Wagenschieber
African Ants
W Wagenschieber
Pygmy Mouse Lemur #1
Hugo Troschel