Sigillaria cancriformis

73,00 

System: Carboniferous.

Subfloor: Westphalian.

Procedencia: Alsdorf, estado de Renania del Norte-Westfalia, Alemania.

Medidas: 15 cm x 13 cm x 3,5 cm

1 in stock

SKU: PA358 Categories: ,

copy of Sigillaria where circular impressions can be seen from the scars formed by the fall of the leaves.

Sigillaria It is a genus of Lycophyta with an arboreal habit, Up to 30 meters high, they did not have real wood, but the trunk was herbaceous. It was formed by an erect stem that did not branch or at most branched dichotomously twice and a large horizontal root system. On the surface of the trunk and branches appeared:

  • photosynthetic structures: leaves or acicular or linear microphylls.
  • reproductive structures: strobili carrying sporangia producing micro- and macrospores. 

The leaves are deciduous, that is, that detach with maturity, remaining attached to the trunk and branches only in their youngest areas. The abscission of the microphylls of the trunk and branches leaves a characteristic scar on the bark. The insertion pattern of the leaves and therefore that of the leaf scars is circular and rarely helical.