-
adpressions show
three longitudinal ribs and are ****igned to the
fossil genus Trigonocarpus. When such
ovules are
preserved as petrifactions, they are ****igned...
- Hexagonocarpus, Holcospermum, Lagenospermum, ?Polypterocarpus, Rhabdocarpus,
Trigonocarpus Fern fronds: Aphlebia, Bertrandia, Corynepteris, Crossotheca, Cyathocarpus...
-
trichophyllus W.W.Sm.
Juncus triformis Engelm.
Juncus triglumis L.
Juncus trigonocarpus Steud.
Juncus trilocularis Zika
Juncus turkestanicus V.I.Krecz. & Gontsch...
- The
fossil seed
Trigonocarpus...
-
possible matches. However, a lot of
evidence points toward some type of
trigonocarpus as the seed/ovlule and
Codonotheca caduca as the male
pollen organ....
- baicalensis,
Saxifraga algisii,
Potentilla adenotricha,
Astragalus trigonocarpus,
Oxytropis heterotricha,
Mertensia serrulata)
Northeastern Siberian...
-
Indeterminate Seed
plant in
order Medullosales.
Neuropteris N. sp. (two species)
Odontopteris Indeterminate Trigonocarpus Indeterminate A seed fern seed....
- the
fluvial sandstone which has
yielded pteridosperm seeds,
known as
Trigonocarpus. The well
preserved nature of the
seeds make it of
considerable sedimentological...
- †Alethopteridaceae
Corsin 1960
Genera Pachytesta permineralized ovules Trigonocarpus ovule casts Bernaultia synangium Alethopteris leaves Medullosa permineralized...
- Kirtlandia. 30: 1–24. Lemay, Stephen; Hannibal,
Joseph T. (2002). "
Trigonocarpus excrescens Janssen, 1940, a
supposed seed from the
Pennsylvanian of...
