La Colonia Macrofossil Taxon List

Below is the flora of the La Colonia Formation, as it is presently understood. The classification of the angiosperms follows Chase and Reveal (2009. Bot. J. Linn. Soc. 161: 122-127); and of ferns, Christenhusz et al. (2011. Phytotaxa 19: 7-54).

FERNS

Subclass: Polypodiidae

Order: Cyatheales

      Family: Dicksoniaceae
      Dicksonia sp., Cúneo, et al., fertile leaves

Order: Hymenophyllales

      Family: Hymenophyllaceae
      Hymenophyllaceae sp., leaves (undescribed)

Order: Salviniales (aquatic ferns)

      Family: Marsileaceae
      Mirasolita irupensis Hermsen et al., leaves
      Lugiomarsiglia aquatica Hermsen et al., sporocarps
      Crybelosporites cf. pannuceus (Brenner) Srivastava, Cerro Bosta, microspores
      Molaspora lobata (Dijkstra) Hall, megaspores
      Regnellidium thomas-taylorii Cúneo et al., leaves

      Family: Salviniaceae
      Azolla sp. undescribed shoots
      Azolla coloniensis De Benedetti et al., megaspores, microspores
      Azolla coloniensis Hermsen et al., sporophyte
      Paleoazolla patagonica A. Archangelsky et al., megaspore complexes, microspore massulae.

SPERMATOPHYTA

Subclass Magnoliidae (the angiosperms)

Superorder: Lilianae (monocots)

Clade: Commelinids

Order: Arecaceae

      Family: Arecaceae
      Araceae sp., leaves (undescribed)

      Family: Araceae
      Aquaephyllum auriculatum Gallego et al., leaves
      Pandaniidites sp., Gallego et al., pollen

Order: Poales

      Family: Typhaceae
      Typhaceae sp., leaves (undescribed)

Superorder: Nymphaeanae

Order: Nymphaeales

     Family: Nymphaeaceae (water lilies)
     Nympheaeceae sp., seeds (undescribed)

Clade: Eudicots

Superorder: Proteanae

Order: Proteales

      Family: Nelumbonaceae (lotuses)
      Nelumbo sp., fruit-receptacles & fruits
      Nelumbo puertae Gandolfo & Cúneo, leaves

Dicots—affinities uncertain

      Morphotype 1, Gandolfo et al.
      Morphotype 2, Gandolfo et al.
      Morphotype 3, Gandolfo et al.
      Morphotype 4, Gandolfo et al.
      Morphotype 5, Gandolfo et al.
      Morphotype 6, Gandolfo et al.

     
     


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