Are the two examples of $4\times 4$ anti-magic squares currently on Wikipedia actually anti-magic squares under the definition given there?
The examples are:
$$\left[ \begin {array}{cccc} 2&15&5&13\\16&3&7&12\\ 9&8&14&1\\ 6&4&11&10 \end {array} \right]$$
and $$\left[ \begin {array}{cccc} 1&13&3&12\\15&9&4&10\\ 7&2&16&8\\ 14&6&11&5 \end {array} \right]$$
For example, for the first one: $$\left[ \begin {array}{cccc} 2&15&5&13\\16&3&7&12\\ 9&8&14&1\\ 6&4&11&10 \end {array} \right] $$
The entries are the integers $1$ to $16$.
The rows sum to 35, 38, 32, 31 respectively, the columns to 33, 30, 37, 36, and the diagonals to 29, 34. These are the 10 consecutive integers 29 to 38.
So yes, it satisfies the definition.