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Periastron

Taxonomy
Periastron was named by Unger (1856). It is not extant. Its type is Periastron reticulatum.

It was assigned to Pteridospermophyta by Andrews (1970).

Species
P. reticulatum (type species)
Species lacking formal opinion data
P. conatus, P. delepinei, P. delepinei, P. perforatum, P. reticulum

Synonymy list
YearName and author
1856Periastron Unger
1970Periastron Andrews

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RankNameAuthor
kingdomPlantae
subkingdomEmbryophyta
RankNameAuthor
phylumPteridospermophyta
genusPeriastronUnger 1856

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. †Periastron Unger 1856
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†Periastron reticulatum Unger 1856
Diagnosis
No diagnoses are available
Measurements
No measurements are available
No ecological data are available

Age range: base of the Middle Givetian to the top of the Hastarian or 385.90000 to 353.70000 Ma

Collections (10 total)


Time interval Ma Country or state Original ID and collection number
Middle Givetian385.9 - 383.4United Kingdom (Scotland) P. conatus (22770)
Famennian372.15 - 358.86USA (Kentucky) P. perforatum (21177) P. perforatum, P. reticulatum (20976 21168)
Famennian372.15 - 358.86USA (Indiana) P. perforatum, P. reticulatum (21033)
Hastarian358.86 - 353.7Germany (Thuringia) P. delepinei (21366)
Tournaisian - Visean358.86 - 330.3USA (Kentucky) P. reticulatum (21119 21124) P. reticulum (21121)
Mississippian358.86 - 323.4France P. delepinei (10663)