Jurassic infructescence

This stone comes from the Lower Jurassic (Lias) of Pechgraben near Bayreuth in Germany.

In addition to some leaves, it contains a highly interesting infructescence of an
unidentified plant. We haven't been able to figure out what this is - it may be something new undescribed!

The plate is unbroken, it measures about 14 x 12 x 1.5 cm. The infructescence measures about 4 cm in diameter.

Unidentified rarity!

No manipulations!