Page 23 - Everything You Know About Dinosaurs is Wrong
P. 23
Biologists (who study animals and plants alive today) and palaeontologists love to group animals together in little clubs. Some of these clubs are very large.
‘Mammals’, for instance, includes over 5,000 different sorts of animals. But these are made up of smaller groups, like ‘talpids’ – which is part of ‘mammals’ but only includes about 50 types of moles and their close relatives.
By grouping animals together by how similar they are to each other, scientists are able to make better sense of the animal kingdom – how different types of living things are related to each other and how they evolved over time.
The more biologists study animals, the more surprises can be found . . . For example, golden moles were long thought to be part of the ‘talpid’ gang, along with European moles and those that live in North America, but then scientists discovered that they actually belonged in a group of animals called ‘afrotheria’ – along with elephants! Which means golden moles are more closely related to elephants than they are to the dark-furred moles you might find making a mess in a garden north of the equator.
AARDVARK
ELEPHANT SHREW GOLDEN MOLE
NOT REALLY A MOLE!
AFROTHERIA
OTTER SHREW TENREC
HYRAX
ELEPHANT
DUGONG MANATEE
Sometimes it can be very difficult to find the parts of animals that unite them as these can be hidden deep inside them or in tiny details of their skeletons – like a hidden password – and this is doubly true for extinct animals, like dinosaurs.
So, even though we might THINK we know which animals are related to others in their family tree, sometimes this can be turned upside down . . . all in a shake of the hips!
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