Unknown Cretaceous Maastrichtian fossil twig plant Mesozoic era mass extinction

Description

Specimen:
Unknown rare Uppermost Cretaceous Maastrichtian fossil plant - Sea grass ?!  Mesozoic era end mas extinction !
Locality:
All detailed data will be provided with the specimen
Stratigraphy:
Upper Cretaceous,
Maastrichtian - Cretaceous mass extinction time
!!!
Age:
ca. 65 Mya
Matrix dimensions:
ca. 8,0 x 11,5 x 3,5 cm ( white square on last picture is 1,0 x 1,0 cm )
Description:
Unknown rare Uppermost Cretaceous Maastrichtian fossil plant - Sea grass ?!
Mesozoic era end mas extinction !