PBDB Taxon

Basic info	Taxonomic history	Classification	Included Taxa
Morphology	Ecology and taphonomy	External Literature Search	Age range and collections

Pterophyllum xiphipterum

Bennettitales

Taxonomy

Pterophyllum xiphipterum was named by Harris (1932). It is not extant. It is considered to be a form taxon.

Sister species lacking formal opinion data

P. aeguale, P. approximatum, P. bellii, P. blasii, P. blumii, P. braunsii, P. brevipene, P. brevipenna, P. burejensis, P. cteniforme, P. cycadites, P. descussatum, P. eratum, P. erratum, P. filicoides, P. fossum, P. giganteum, P. grandifolium, P. greppinii, P. guembelii, P. haberfelneri, P. hanesianum, P. haueri, P. hogardii, P. hortensiae, P. irregulare, P. jaegerii, P. kochi, P. kochii, P. lunzense, P. macrophyllum, P. magoti, P. maximum, P. mondeguensis, P. multilineatum, P. munsteri, P. neuberi, P. pectiniforme, P. pichleri, P. pinnatifidum, P. platyrachis, P. plicatum, P. propiquum, P. pshartense, P. ptilum, P. pulchellum, P. rectangulare, P. rectum, P. riegeri, P. rigidum, P. spectabile, P. spinosum, P. taxinum, P. tenuinervis, P. thomasii, P. validum, P. verranianum, P. zygotacticum

Entered

by B. Allen (authorized by A. Dunhill) on 2020-01-28

Synonymy list

Year	Name and author
1932	Pterophyllum xiphipterum Harris

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Rank	Name	Author
kingdom	Plantae
subkingdom	Viridiplantae	Cavalier-Smith 1981
—	Streptophyta	(Jeffrey 1971)
superphylum	Embryophyta	()
—	Tracheophyta	(Sinnott 1935)
subphylum	Euphyllophytina
—	Radiatopses

Rank	Name	Author
—	Lignophytia
—	Spermatophytata
phylum	Gymnospermae
order	Bennettitales	Bessey 1910
genus	Pterophyllum	Brongniart 1828
species	xiphipterum	Harris 1932

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.

†Pterophyllum xiphipterum Harris 1932

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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: Late/Upper Triassic or 237.00000 to 201.40000 Ma

Collections (3 total)

Time interval	Ma	Country or state	Original ID and collection number
Late/Upper Triassic	237.0 - 201.4	Greenland	Pterophyllum xiphipterum (23380 23448 23452)