[quote='ThePaleolithicFreethinker' pid='657496' Ya again no. We can tell what a species is. If you want a more detailed explanation just ask.[/QUOTE]
OK, let's hear it.
[quote]Also to add lets read it shall we.[/quote]
Sure!
[quote]An individual belonging to a group of organisms (or the entire group itself) having common characteristics and (usually) are capable of mating with one another to produce fertile offspring. Failing that (for example the Liger) It has to be ecologically and recognisably the same.[/quote]
Usually and failing that indicate ambiguity. Further, definitions based on fertility are not applicable in paleontology.
[quote]Failing that means that the offspring that two different species has like a (lion and a tiger making a liger) can not have offspring.[/quote]
Except, female ligers are fertile. So, you fail three ways.
OK, let's hear it.
[quote]Also to add lets read it shall we.[/quote]
Sure!

[quote]An individual belonging to a group of organisms (or the entire group itself) having common characteristics and (usually) are capable of mating with one another to produce fertile offspring. Failing that (for example the Liger) It has to be ecologically and recognisably the same.[/quote]
Usually and failing that indicate ambiguity. Further, definitions based on fertility are not applicable in paleontology.
[quote]Failing that means that the offspring that two different species has like a (lion and a tiger making a liger) can not have offspring.[/quote]
Except, female ligers are fertile. So, you fail three ways.