Rhyniales

E538416

Rhyniales is an extinct order of early vascular land plants from the Silurian–Devonian period, characterized by simple leafless stems and among the earliest known examples of tracheophytes.

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Statements (46)

Predicate Object
instanceOf extinct taxon
plant order
branchingPattern dichotomous branching
characteristic dichotomously branching axes
early land plants
lacked true leaves
lacked true roots
possessed vascular tissue
simple leafless stems
terminal sporangia
clade tracheophytes
conductingTissue primitive tracheids
distinguishedBy terminal rather than lateral sporangia
distinguishedFrom Zosterophyllales NERFINISHED
division Tracheophyta NERFINISHED
vascular plants
earliestAppearance Silurian period NERFINISHED
environment terrestrial habitats
fossilPreservation commonly preserved as compression and permineralized fossils
fossilsFoundIn Europe NERFINISHED
North America NERFINISHED
other parts of Laurussia
geologicalAge Paleozoic
growthForm small herbaceous plants
importance among the earliest known tracheophytes
important for understanding early vascular plant evolution
includedTaxa Aglaophyton NERFINISHED
Cooksonia NERFINISHED
Rhynia NERFINISHED
kingdom Plantae
knownFrom fossil record
latestAppearance Devonian period NERFINISHED
leafPresence leafless
maximumHeight on the order of several centimeters to decimeters
morphology leafless axes with simple branching
namedAfter Rhynia NERFINISHED
paleoecology occupied moist habitats near water sources
photosyntheticOrgan stems
rank order
reproduction spore-bearing plants
rootPresence rootless or with simple rhizomes
significanceInPaleobotany represents a key stage in the evolution of vascular systems
sporangiaPosition terminal on stems or branches
status extinct
temporalRange Devonian
Silurian NERFINISHED

Referenced by (1)

Full triples — surface form annotated when it differs from this entity's canonical label.

Rhynia order Rhyniales