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Physostoma

Taxonomy
Physostoma was named by Williamson (1876). It is not extant. Its type is Physostoma elegans.

It was assigned to Pteridospermophyta by Andrews (1970).

Synonymy list
YearName and author
1876Physostoma Williamson
1970Physostoma Andrews

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RankNameAuthor
kingdomPlantae
subkingdomEmbryophyta
RankNameAuthor
phylumPteridospermophyta
genusPhysostomaWilliamson 1876

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. †Physostoma Williamson 1876
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†Physostoma elegans Williamson 1876
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Invalid names: Lagenostoma physoides Williamson 1876 [synonym], Sporocarpon ornatus Williamson 1880 [synonym]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
No ecological data are available

Age range: base of the Asbian to the top of the Westphalian A or 340.00000 to 316.90000 Ma

Collections (10 total)


Time interval Ma Country or state Original ID and collection number
Asbian340.0 - 336.0United Kingdom (Scotland) P. sp. (10646 35920)
Pennsylvanian323.2 - 298.9USA (Michigan) P. Winchellii (10885) P. winchellii (10778)
Westphalian A318.7 - 316.9United Kingdom (England) P. elegans (37376 37382) P. stellatum, P. elegans (37369)
Westphalian A318.7 - 316.9Belgium P. stellatum (37495)
Westphalian A318.7 - 316.9Netherlands P. elegans (37497)
Westphalian A318.7 - 316.9Germany P. elegans (37501)