Odd stamps : 08 Stamps with special cuts - 04 c

I wrote already about trapezoid stamps (http://rainbowstampsandcoins.blogspot.com/search/label/trapezoid) but there are more stamps in that shape.

I was on a stamp fair and that's where I found the following stamps of Tanzania.
They are CTO - unfortunatly - but from some countries that's more or less the only way to obtain the emitted stamps.
We see a weird combiation of prehistorical animals

2/- Plateosaurus

3/- Pteranodon

5/- Jurasic Brontosaurus

and 100/- Stegosaurus

and, the other values shows animals that are still alive:

7/- Lions

8/- Tiger (strange, as tigers do not live in Africa)

12/- Orang-Utang (living in Sumatra and Borneo)

20/- Elephants

This weird set is fun for children and for me (as I like the shape) but for collectors not really a hot item.
The fact that they are all CTO makes the whole set even less interesting.
However, I can't keep them away from my blog, as the 'oddness' is there...