Pandemophyllum attenuatum

Name

Pandemophyllum attenuatum

Rank

Species

Generic Name

[Genus] Pandemophyllum

Authors (Pub.)

Upchurch G. R., Jr. Dilcher D. L.  

Publication

Cenomanian angiosperm leaf megafossils, Dakota Formation, Rose Creek locality, Jefferson County, southeastern Nebraska [1990/12]

Journal

Bulletin of the United States Geological Survey

Issue

1915

Page number

29

Year

1990

Fossil Status

leaves

Stratigraphy

Cenomanian

Strat. comment

Dakota Formation

Location

Rose Creek locality, Jefferson County, southeastern Nebraska, USA

Paleoregion

America (North)

Data for Holotypus

Repository

Florida Museum of Natural History, Gainesville, USA

Repository Number

15713-1845

Num

13: 3

Pub.

Cenomanian angiosperm leaf megafossils, Dakota Formation, Rose Creek locality, Jefferson County, southeastern Nebraska [1990/12]

Data for Paratypus

Repository

Florida Museum of Natural History, Gainesville, USA

Repository Number

15113-4698a, 4698b [pl. 13: 4], 8305 [pl. 13: 5]

Num

13: 4, 5

Pub.

Cenomanian angiosperm leaf megafossils, Dakota Formation, Rose Creek locality, Jefferson County, southeastern Nebraska [1990/12]

Diagnosis

Lamina lanceolate; apex longattenuate. Secondary veins originating at about 45°, commonly curved for their entire length in the basal half of the lamina; flattened brochidodromous arches present in the apical half of lamina; intercostal regions exmedially elongate basally, becoming predominantly isodiametric and with apical attenuation in the apical half of lamina. Tertiary venation predominantly reticulate; tertiary veins moderate relative to the secondary veins.