Loganiidae Karatajūtė-Talimaa 1978 Loganelliidae is an extinct family of thelodonts in the order Thelodontiformes.

[1] They are distinguished by the star or cross shaped ridges located on their head scales.

The crown is notably posteriorly pointed, with the apex extending beyond the base.

The main crown surface is flat and smooth, and can be inclined in either horizontal direction.

The base of the crown possesses a short spine which points downwards and anteriorly.