Glyptolepis
morphogenus
Type species: Glyptolepis keuperiana Schimper, 1872 (by monotypy)
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morphogenus
Type species: Glyptolepis keuperiana Schimper, 1872 (by monotypy)
genus
Type species: Genoites patagonica Feruglio, 1942 emend. Cuneo, 1985
genus
Type species: Ferugliocladus riojanum Archangelsky & Cuneo, 1987.
Shoots branching at least up to fourth order; branches attached radially and irregularly at acute angles, straight to slightly curved, leafless or with helically disposed leaves. Leaves all of one kind, with a single vein, lanceolate, acute. Female cones compact, ovoid, terminal; composed of simple bracts and either free ovules or ovuliferous complexes, attached helically to cone axis. Presumed ovules or ovuliferous complexes subaxillary to bracts, subcircular; ovules orthotropous with a small and simple nucellar apex.
genus
Type species: Ernestiodendron filiciforme (Sternberg, 1825) Florin 1934
genus
Type species: Emporia lockardii (Mapes & Rothwell, 1984) Mapes & Rothwell, 2003
genus
Type species: Pseudovoltzia liebeana (Geinitz) Florin, designated by who?
genus
Type species: Majonica alpina Clement-Westerhof, 1987
genus
Type-species: Dolomitia cittertiae Clement-Westerhof, 1987
genus
genus
type species: Barthelia furcata Rothwell & Mapes, 2001
genus
type species: Aethophyllum stipulare Brongniart, 1828
Small eustelic coniferous trees with orthotropic stem, plagiotropic branches, and dense wood. Leaves helically arranged, simple on ultimate branches, forked on more proximal branches. Fertile organs consisting of simple pollen cones and compound ovulate cones. Pollen cone axis bearing helically arranged amphistomatic sporophylls with adaxial pollen sacs bearing eusaccate prepollen.
Presumed main axis leafy at younger stage. Lateral shoot syst ems pinnat ely branched, consisting of a penultimate branch with two lateral series of parallel ultimate branches situated in one plane. Tripinnate shoot systems may also occur. Leaves bifacial, spirally arranged, sometimes heterophyllous.
Coniferophytic seed plants with compound ovulate fertile zones and simple pollen cones; branched, woody stems bearing closely spaced simple and forked leaves. Stems eustelic with enarch primary xylem, dense wood; leaves vascularized by single bundle, stomata in two adaxial bands, guard cells with papillate subsidiary cells; stomatoliferous grooves absent. Pollen cones simple, pollen sacs borne adaxially on sporophylls, producing monosaccate, eusaccate prepollen.
Voltzialean plants with compact ovulate cones bearing bilateral bract-scale complexes; sterile bracts free, simple; ovuliferous dwarf shoots reduced to a single, simple, orbicular fertile scale; ovules one per scale, laterally attached, inverted (adapted from Clement-Westerhof 1988)
Voltzialean plants with compact ovulate cones bearing bilateral bract-scale complexes; sterile bracts free or partially fused with dwarf shoots, simple; ovuliferous dwarf shoots with 1-15 sterile scales and 2 or 3 variously shaped, flattened fertile scales; ovules one per fertile scale, laterally attached, inverted (adapted from Clement-Westerhof 1988)
Voltzialean plants with compact ovulate cones bearing bilateral bract-scale complexes; sterile bracts free, simple or forked; ovuliferous dwarf shoots with 10-30 sterile scales and one or more broad, flattened fertile scales; ovules one per fertile scale, laterally attached, inverted (adapted from Clement-Westerhof 1988; Mapes & Rothwell 1991)
Voltzialean plants with compact ovulate cones bearing bilateral bract-scale complexes; sterile bracts free from dwarf shoots, with forked tip; ovuliferous dwarf shoots with 15-30 sterile scales and 1 or 2 (rarely 3-5) narrow, cylindrical fertile scales; ovules one per fertile scale, apical, inverted (adapted from Mapes & Rothwell 1984, 1991, 2003)
Voltzialean plants with ovulate pre-cones comprising a 'compount cone-like fertile zone of axillary dwarf shoots' extending into a distal 'vegetative zone'; ovuliferous 'dwarf shoots' radial, with 'numerous sterile scales', and in the 'axils of helically' arranged bracts with forkedtips; ovules 'apparently erect', 'borne on narrow sporophylls' (adapted from Rothwell & Mapes 2001)
Voltzialean plants with ovulate pre-cones comprising a compound cone-like zone of axillary dwarf shoots between proximal and distal 'vegetative zones'; ovuliferous dwarf shoots bilateral, with a zone of several sterile scales subtending a fan of 3 to 4 uniovulate sporophylls; ovules inverted.
Pinopsid plants bearing cones with megasporophyll units comprising single (unlobed) sterile bracts, more or less free to the base, and ovuliferous scales almost invariably multilobed and multiovulate.
As for the order Ferugliocladales
Small, eustelic coniferous trees with dense wood and resin canals in pith. Helically arranged simple leaves on all orders of branching. Fertile organs consisting of compound pollen cones and compound ovulate fertile zones occurring between vegetative zones on branch. Pollen cones with helically arranged bracts and axillary dwarf shoots; sterile scales borne toward bract and laterally; sporophylls with one terminal erect pollen sac borne toward cone axis. Prepollen grains monosaccate, eusaccate.