Preliminary report of Lower to Middle Emsian (Lower Devonian) flora and fauna from Consthum and Merkholtz (Grand Duchy of Luxembourg) with Porolepid (Sarcopterygii) and Heterostracan Fish remains

Preliminary report of Lower to Middle Emsian (Lower Devonian) flora and fauna from Consthum and Merkholtz (Grand Duchy of Luxembourg) with Porolepid (Sarcopterygii) and Heterostracan Fish remains