Araripestrobus

Name

Araripestrobus

Rank

Genus

Authors (Name)

Seyfullah L. J. Roberts E. A. Schmidt A. R. Kunzmann L.  

Authors (Pub.)

Seyfullah L. J. Roberts E. A. Schmidt A. R. Ragazzi E. Anderson K. B. Rodrigues do Nascimento D., Jr. Ferreira da Silva Filho W. Kunzmann L.  

Publication

Revealing the diversity of amber source plants from the Early Cretaceous Crato Formation, Brazil [2020/8]

Journal

BMC Evolutionary Biology

Volume

20

Issue

107

Page number

4

Year

2020

Parent Taxon

[Order] Erdmanithecales

Fossil Status

cones (male)

Type

Araripestrobus resinosus

Diagnosis

Large (up to 170mmlong and 74mm wide) microsporangiate pedunculate cones, appearing ‘segmented’ or organized into distinct layers in lateral outer surface view, built up of about 10 disc-shaped cone portions and a basal and apical cone portion with domeshaped apex and base respectively, gaps present between the layered portions. Peduncle robust, short, diameter about 1/3 of the cone diameter. Detached microsporophylls leave rhomboidal scars with a central impression of a possible vascular bundle. Individual cone portions found detached more or less trapezoid to diamond-shaped in cross-section with a longer and a shorter diameter and the cone axis subcentrally; outer margins frequently arc-shaped in crosssectional view. Slender, wedge-shaped microsporophylls, in dense facetted arrangement, generally in helical phyllotaxis; particularly each cone portion with 2–4 levels of microsporophylls, in alternating positions in adjacent levels. Each microsporophyll with 10 or more longitudinally running resin canals. In situ pollen of Eucommiidites-type, boat-shaped, ‘trisulcate’, surface finely perforate, smooth to microrugulate; microfossulae between perforations.