The below images have been adapted (inverted) from the black on white images of Dr. Eduard d’Alton found in Die vergleichende Osteologie.
![Hyena Skeleton by Eduard Joseph D'Alton circa 1822](https://ctgpublishing.com/wp-content/uploads/2013/09/hyena-skeleton-by-eduard-joseph-d-alton-circa-1822-invert-1024x732.jpg)
Hyena Skeleton by Eduard Joseph D’Alton circa 1822 Adapted from Die vergleichende Osteologie
![Kangaroo Skeleton by Eduard Joseph D'Alton circa 1824](https://ctgpublishing.com/wp-content/uploads/2013/09/kangaroo-skeleton-by-eduard-joseph-d-alton-circa-1824-invert-804x1024.jpg)
Kangaroo Skeleton by Eduard Joseph D’Alton circa 1824 Adapted from Die vergleichende Osteologie
![Lion Skeleton by Eduard Joseph D'Alton circa 1822](https://ctgpublishing.com/wp-content/uploads/2013/09/lion-skeleton-by-eduard-joseph-d-alton-circa-1822-invert-1024x769.jpg)
Lion Skeleton by Eduard Joseph D’Alton circa 1822 Adapted from Die vergleichende Osteologie
![Long-tailed Monkey Skeleton by Eduard Joseph D'Alton circa 1823](https://ctgpublishing.com/wp-content/uploads/2013/09/long-tailed-monkey-skeleton-by-eduard-joseph-d-alton-circa-1823-invert-1024x731.jpg)
Long-tailed Monkey Skeleton by Eduard Joseph D’Alton circa 1823 Adapted from Die vergleichende Osteologie
![Ox Skeleton by Eduard Joseph D'Alton circa 1823](https://ctgpublishing.com/wp-content/uploads/2013/09/ox-skeleton-by-eduard-joseph-d-alton-circa-1823-invert-1024x755.jpg)
Ox Skeleton by Eduard Joseph D’Alton circa 1823 Adapted from Die vergleichende Osteologie
![Pig Skeleton by Eduard Joseph D'Alton circa 1821](https://ctgpublishing.com/wp-content/uploads/2013/09/pig-skeleton-by-eduard-joseph-d-alton-circa-1821-invert-1024x708.jpg)
Pig Skeleton by Eduard Joseph D’Alton circa 1821 Adapted from Die vergleichende Osteologie
![Polar Bear Skeleton by Eduard Joseph D'Alton circa 1822](https://ctgpublishing.com/wp-content/uploads/2013/09/polar-bear-skeleton-by-eduard-joseph-d-alton-circa-1822-invert-1024x677.jpg)
Polar Bear Skeleton by Eduard Joseph D’Alton circa 1822 Adapted from Die vergleichende Osteologie