I wouldn't say last year was failed. I have found some new species and several exapmles of quite good preservartion to add in my collection. And some of that finds forced me to learn books deeply. All last year finds I systemized according to their genus and all are Carboniferous except coated Cordaites leaves.

Calamites

Calamostachys - spore cones.

Calamites (Crucicalamites) multiramis - quite rare find.

Calamites Goepperti - the best Calamites bark I've found (Calamophyllites)

Palaeostachya

Calamites root

Pinnularia columnaris (Artis )

Ferns

Alloiopteris erosa - from Pecopterids (thanks Juan Carlos from Madrid who helped me to ID).

Palmatopteris furcata - from Sphenopterids.

Psaronius – arborescent fern with Pecopteris type leaves.

Seed ferns

Alethopteris lonchitica

Macroneuropteris Scheuchzeri – you can see the same petternation on the central vien of the pinnae as at the rachis.

Mariopteris muricata

Mixoneura – from Odontopterids, ID help from Jeanphilippe Dudziak, French forum.

Neuropteris (rachis) – very unusual pettern.