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Astromyelon

Calamitopsida - Calamitales

Taxonomy
Astromyelon was named by Williamson (1883). It is not extant. Its type is Astromyelon williamsonis.

It was assigned to Calamitales by Andrews (1970).

Species
A. williamsonis (type species)
Species lacking formal opinion data
A. castrense, A. williamsonii
Entered
by B. Allen (authorized by A. Dunhill) on 2020-02-01; modified by B. Allen on 2020-02-02

Synonymy list
YearName and author
1883Astromyelon Williamson
1970Astromyelon Andrews

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RankNameAuthor
kingdomPlantae
subkingdomViridiplantaeCavalier-Smith 1981
—Streptophyta(Jeffrey 1971)
superphylumEmbryophyta()
—Tracheophyta(Sinnott 1935)
—Pteridobiotina
RankNameAuthor
superphylumPteridophytanae
phylumEquisetophytaScott 1900
classCalamitopsidaEndlicher 1841
orderCalamitalesEichwald 1852
genusAstromyelonWilliamson 1883

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

G. †Astromyelon Williamson 1883
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†Astromyelon williamsonis Cash and Hicks 1883
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Diet: "photoautotroph"superp
Created: 2026-03-30 14:38:16
Modified: 2026-03-30 14:38:16
Source: superp = superphylum
Reference: Kenrick and Crane 1997

Age range: base of the Westphalian A to the top of the Sakmarian or 318.70000 to 290.10000 Ma

Collections (7 total)


Time interval Ma Country or state Original ID and collection number
Namurian - Westphalian A330.3 - 316.9Spain (Leon) A. sp. (37358)
Westphalian A318.7 - 316.9United Kingdom (England) A. castrense, A. williamsonii (37376) A. williamsonii (37369 37382)
Westphalian A - Westphalian B318.7 - 314.6Germany A. williamsonii (37506)
Westphalian B - Westphalian C316.9 - 309.8Netherlands A. sp. (37600)
Asselian - Sakmarian298.9 - 290.1China (Hebei) A. sp. (21185)