Tatterman fear aura ability

[Tacgnol9001]

Does the tatterman's fear aura ability work from the nightmare creature template rules:

All creatures within a 60-foot radius that see or hear a nightmare creature must succeed at a Will save or be shaken for as long as they are within the aura. Whether or not the save is successful, that creature cannot be affected again by the same nightmare creature’s fear aura for 24 hours. This is a mind-affecting fear affect.

Or does it work based on the universal monster rules:

Fear Aura (Su) The use of this ability is a free action. The aura can freeze an opponent (as in the case of a mummy's despair) or function like the fear spell. Other effects are possible. A fear aura is an area effect. The descriptive text gives the size and kind of the area.

The former seems more logical (and also fairer, considering the fight is already quite hard), but confirmation would be nice.

[Nullpunkt]

I don't see how those two things are mutually exclusive. The Universal Monster Rule just gives you a general idea and points to the individual creature's description for details.

Assuming the tatterman is a nightmare creature (I don't have the book in front of me), the nightmare template then gives you the specifics.

[Tasfarel]

He actually has both. But keep in mind that his second aura is frightfull presence:

Frightful Presence (Ex)

This special quality makes a creature’s very presence unsettling to foes. Activating this ability is a free action that is usually part of an attack or charge. Opponents within range who witness the action may become frightened or shaken. The range is usually 30 feet, and the duration is usually 5d6 rounds. This ability affects only opponents with fewer Hit Dice than the creature has. An opponent can resist the effects with a successful Will save (DC 10 + 1/2 the frightful creature’s racial HD + the frightful creature’s Cha modifier; the exact DC is given in the creature’s descriptive text). An opponent that succeeds on the saving throw is immune to that same creature’s frightful presence for 24 hours. On a failed save, the opponent is shaken, or panicked if it has 4 Hit Dice or fewer. Frightful presence is a mind-affecting fear effect.

Format: frightful presence (60 ft., DC 21); Location: Aura.

I hold the frightfull presence back at first and just triggered it with a charge of the tattermann.