PBDB Taxon

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Morphology	Ecology and taphonomy	External Literature Search	Age range and collections

Dryophyllum subfalcatum

Angiospermae - Fagales - Nothofagaceae

Taxonomy

Dryophyllum subfalcatum was named by Lesquereux (1875). It is not extant.

Sister species lacking formal opinion data

D. dewalquei, D. fallax, D. furcinerve, D. furcinervosum, D. fushunense, D. lanceolatum, D. nervosum, D. parvum, D. polymorphum, D. pugetensis, D. ripleyensis, D. species, D. tenneseensis, D. tennesseensee, D. tennessensis

Synonyms

Quercus gracilis was named by Newberry (1882). It is not extant.

It was synonymized subjectively with Dryophyllum subfalcatum by Knowlton (1919).

Synonymy list

Year	Name and author
1875	Dryophyllum subfalcatum Lesquereux
1882	Quercus gracilis Newberry
1919	Dryophyllum subfalcatum Knowlton

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Rank	Name	Author
kingdom	Plantae
phylum	Spermatophyta
class	Angiospermae
—	Rosids
—	Eurosids

Rank	Name	Author
—	Fabid
order	Fagales
family	Nothofagaceae
genus	Dryophyllum	Debey 1865
species	subfalcatum	Lesquereux 1875

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.

†Dryophyllum subfalcatum Lesquereux 1875

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Invalid names: Quercus gracilis Newberry 1882 [synonym]

Diagnosis

No diagnoses are available

Measurements

No measurements are available

Diet:

"photoautotroph"p

Created:

2011-07-22 00:04:15

Modified:

2011-07-21 09:04:15

Source: p = phylum

Reference: Kiessling 2009

Age range: base of the Late/Upper Campanian to the top of the Lancian or 83.60000 to 66.00000 Ma

Collections (81 total)

Time interval	Ma	Country or state	Original ID and collection number
Late/Upper Cretaceous	100.5 - 66.0	USA (Wyoming)	Dryophyllum subfalcatum (34971 34974)
Late/Upper Campanian	83.6 - 72.2	USA (New Mexico)	Dryophyllum subfalcatum (34975)
Lancian	72.2 - 66.0	USA (North Dakota)	Dryophyllum subfalcatum (25476 25909 25910 25912 25914 25915 48181 48183 48186 48191 48196 48199 48200 48202 48203 48205 48206 48209 48210 48211 48212 48213 48216 48217 48218 48219 48220 48221 48222 48224 48225 48226 48229 48230 48231 48232 48233 48234 48244 48246 48248 48249 48250 48251 48252 48253 48254 48256 48258 48265 48266 48267 48273 48276 48277 48278 48279 48280 48281 48282 48283 48284 48285 48286 48287 48289)
Lancian	72.2 - 66.0	USA (South Dakota)	Dryophyllum subfalcatum (31955 48247)
Lancian	72.2 - 66.0	USA (Wyoming)	Dryophyllum subfalcatum (14514)
Late/Upper Maastrichtian	72.2 - 66.0	Canada (Saskatchewan)	Dryophyllum subfalcatum (54105)
Late/Upper Maastrichtian	72.2 - 66.0	USA (Wyoming)	Dryophyllum subfalcatum (34922 34967 34969 34970 45846)
Late/Upper Maastrichtian	72.2 - 66.0	USA (Montana)	Dryophyllum subfalcatum (60169 189003)
Maastrichtian	72.2 - 66.0	USA (North Dakota)	Dryophyllum subfalcatum (99589)