Zeiller's bat-wing fern (Chiropteris zeilleri)

Chiropteris zeilleri: Fossil Record, Leaf Characteristics and Taxonomy

Discovered in ancient Mesozoic geological strata, the fossil species Chiropteris zeilleri serves as an important indicator of prehistoric terrestrial ecosystems. This extinct taxon is recognized through fossilized impressions of its distinctive foliage, which are preserved in fine-grained sedimentary rocks.

Paleobotanists study these rare impressions to understand the diversity of ancient non-flowering flora. The distribution of these fossils helps reconstruct historical landmasses and continental configurations.

Taxonomy

  • ∟ царство Plantae
  • ∟ division Pteridophyta
  • ∟ subclass Polypodiidae
  • ∟ order Gleicheniales
  • ∟ family Dipteridaceae
  • ∟ genus Chiropteris (Bat-wing fern)
  • ∟ species Chiropteris zeilleri (Zeiller's bat-wing fern)

Morphology

Foliage of Chiropteris zeilleri is characterized by broad, fan-shaped or wedge-shaped leaf blades with fine venation patterns. The veins radiate from the base of the leaf and dichotomously branch toward the outer margin, forming a delicate reticulate or parallel network.

Unlike many modern leaves, these fossil specimens lack modern vascular structures, reflecting their primitive botanical nature. The leaf margin is typically smooth or slightly lobed, depending on the preservation state of the fossil specimen.

Interesting facts

  • Taxonomic History: The species was named in honor of the French paleobotanist René Zeiller, who contributed significantly to the study of fossil plants.
  • Sedimentary Context: Specimens are typically preserved as carbonaceous compressions or impressions in shale and siltstone deposits.
  • Biogeographical Marker: The presence of this taxon in specific geological horizons helps researchers correlate the ages of disparate rock formations.

Sources

  • GBIF Backbone Taxonomy: Chiropteris zeilleri
  • Wikidata: Chiropteris zeilleri (Q40986523)