Corduliidae 11 claims

Claim · model-written summary

The committee recommended conserving Williamsonia with a conserved type.

Taxon

WilliamsoniaWilliamsoniae0

Outcome

Williamsonia with a conserved typee0

Verbatim

e0

“Williamsonia with a conserved type”

Claim · model-written summary

Jurassic cone specimens provide new information on ovule-bearing Williamsonia.

Taxon

WilliamsoniaWilliamsoniat0

Outcome

new information on ovulebearing Williamsoniae2

Verbatim

t0

“WELTRICHIA AND WILLIAMSONIA”

e2

“provide new information on ovulebearing Williamsonia”

Claim · model-written summary

Young Williamsonia ovules had a long, narrow micropylar canal lined with large cells.

Taxon

WilliamsoniaWilliamsoniae1

Organ / stage

young ovulese0

Outcome

micropylar canal is long, narrow and lined with large cellse0

Setting

Rajmahal Hills, Indiae1

Not reportedDirection

Verbatim

e0

“In young ovules the micropylar canal is long, narrow and lined with large cells”

e1

“Williamsonia ovules collected from the Jurassic of the Rajmahal Hills, India.”

Claim · model-written summary

In mature Williamsonia ovules and seeds, the canal became small and wide and contained a nucellar plug.

Taxon

WilliamsoniaWilliamsoniae1

Organ / stage

mature ovules and seedse0

Outcome

canal becomes small and wide, and is filled in by a nucellar pluge0

Not reportedDirection

Verbatim

e0

“in mature ovules and seeds the canal becomes small and wide, and is filled in by a nucellar plug.”

e1

“Williamsonia ovules”

Claim · model-written summary

The Williamsonia micropyle wall decreased from 3–4 cell layers to one.

Taxon

WilliamsoniaWilliamsoniae1

Outcome

thickness of the wall of the micropylee0

Direction

decreasese0

Value

3–4 cells to onee0

Verbatim

e0

“The thickness of the wall of the micropyle also decreases from 3–4 cells to one.”

e1

“Williamsonia ovules”

Claim · model-written summary

The Williamsonia receptacle is interpreted as a modified axis of a two-noded inflorescence.

Taxon

WilliamsoniaWilliamsoniae4

Outcome

modified axis of two noded inflorescencee4

Verbatim

e4

“the receptacle of Williamsonia is a modified axis of two noded inflorescence”

Claim · model-written summary

Mature seeds occur in ripe, naked, bractless fructifications.

Taxon

WilliamsoniaWilliamsoniat0

Outcome

Mature seeds are found in ripe, naked, bractless fructificationse0

Verbatim

e0

“Mature seeds are found in ripe, naked, bractless fructifications.”

t0

“Williamsonia”

Claim · model-written summary

Seeds are oblong or ovate, stalked, dicotyledonous, partly endospermic and long-micropylar.

Taxon

WilliamsoniaWilliamsoniat0

Outcome

oblong or ovate, stalked, dicotyledonous, partially endospermic, and have long micropylese0

Verbatim

e0

“Seeds are oblong or ovate, stalked, dicotyledonous, partially endospermic, and have long micropyles.”

t0

“Williamsonia”

Claim · model-written summary

The seed coat has an outer tubular-cell covering, middle parenchymatous integument and inner vascularized layer.

Taxon

WilliamsoniaWilliamsoniat0

Organ / stage

seed coate0

Outcome

outer covering of tubular cells, middle parenchymatous true integument, and an inner vascularized layere0

Verbatim

e0

“The seed coat is differentiated into an outer covering of tubular cells, middle parenchymatous true integument, and an inner vascularized layer”

t0

“Williamsonia”

Claim · model-written summary

The inner vascularized layer forms after fertilization from peripheral nucellus.

Taxon

WilliamsoniaWilliamsoniat0

Organ / stage

peripheral portion of nucelluse0

Outcome

inner vascularized layere0

Qualifier

after fertilizatione0

Verbatim

e0

“an inner vascularized layer which forms after fertilization and as a result of modification of the peripheral portion of nucellus.”

t0

“Williamsonia”