''Cladophlebis'' is an extinct

form genus Form classification is the classification of organisms based on their morphology, which does not necessarily reflect their biological relationships. Form classification, generally restricted to palaeontology, reflects uncertainty; the goal of sc ...

fern The ferns (Polypodiopsida or Polypodiophyta) are a group of vascular plants (plants with xylem and phloem) that reproduce via spores and have neither seeds nor flowers. They differ from mosses by being vascular, i.e., having specialized tissue ...

, which has been reported from the

Permian The Permian ( ) is a geologic period and System (stratigraphy), stratigraphic system which spans 47 million years, from the end of the Carboniferous Period million years ago (Mya), to the beginning of the Triassic Period 251.902 Mya. It is the s ...

to the end of the

Cretaceous The Cretaceous ( ) is a geological period that lasted from about 143.1 to 66 mya (unit), million years ago (Mya). It is the third and final period of the Mesozoic Era (geology), Era, as well as the longest. At around 77.1 million years, it is the ...

and from all continents of the world.

Description

Some

pinnules A leaflet (occasionally called foliole) in botany is a leaf-like part of a compound leaf. Though it resembles an entire leaf, a leaflet is not borne on a main plant stem or branch, as a leaf is, but rather on a petiole or a branch of the leaf. Co ...

have smooth edges and some have serrated edges. The midrib is distinct and the lateral veins are

dichotomous A dichotomy () is a partition of a set, partition of a whole (or a set) into two parts (subsets). In other words, this couple of parts must be * jointly exhaustive: everything must belong to one part or the other, and * mutually exclusive: nothi ...

(two branches) to the end. This fern had rizoma. used to refer to

Paleozoic The Paleozoic ( , , ; or Palaeozoic) Era is the first of three Era (geology), geological eras of the Phanerozoic Eon. Beginning 538.8 million years ago (Ma), it succeeds the Neoproterozoic (the last era of the Proterozoic Eon) and ends 251.9 Ma a ...

and

Mesozoic The Mesozoic Era is the Era (geology), era of Earth's Geologic time scale, geological history, lasting from about , comprising the Triassic, Jurassic and Cretaceous Period (geology), Periods. It is characterized by the dominance of archosaurian r ...

fern leaves that have "fern fronds with pinnules that are attached to the rachis, and have a median vein that runs to the apex of the pinnule, and veins from that are curved and dichotomise".''Cladophlebis''
at

Fossilworks Fossilworks was a portal which provides query, download, and analysis tools to facilitate access to the Paleobiology Database, a large relational database assembled by hundreds of paleontologists from around the world. History Fossilworks was cr ...

.org

Species

There were many species of ''Cladophlebis'', including: ''C. akhtashensis, C. arctica, C. browniana, C. denticulata, C. dunberi, C. fukiensis. C. haiburnensis, C. heterophylla, C. hirta, C. impressa, C. kurtzi, C. lobifolia, C. nebbensis, C. patagonica, C. phlebopteris, C. porsildi, C. readi, C. remota, C. retallackii, C. roessertii, C. septentrionalis, C. simplicima, C. spectabilis, C. tenuis, C. wyomingensis,'' and ''C. yanschinii''.

References

Bibliography

* *

External links

*
''Cladophlebis austalis''
Natural History Museum
Range map for ''Cladophlebis''
from the PaleoBiology Database {{Taxonbar, from=Q5124948 † Cladophlebis Permian plants Triassic plants Jurassic plants Cretaceous plants Permian first appearances Cretaceous extinctions Mesozoic Antarctica Mesozoic life of Asia Mesozoic life of Europe Mesozoic life of North America Prehistoric plants of North America Mesozoic life of South America Prehistoric plants of South America Triassic Argentina Jurassic Argentina Fossils of Argentina Triassic Chile Jurassic Chile Fossils of Chile Jurassic Colombia Fossils of Colombia Fossil taxa described in 1849