Send back Sam and all these camelid animals (6)
I believe the answer is:
llamas
'animals' is the definition.
(I've seen this before)
'send back sam and all' is the wordplay.
'send back' says the letters should be written in reverse.
'and' is a charade indicator (letters next to each other).
'sam'+'all'='samall'
'samall' back-to-front is 'LLAMAS'.
'these camelid' is the link.
This may not be correct. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for llamas that I've seen before include "Andean pack animals" , "South American animals related to camels but humpless" , "Sal and Mal for the animals" , "domesticated guanacos" , "South American cud-chewing animals" .)