Craspedodromophyllum acutum P.R.Crane

Plant Fossil Names Registry Number: PFN002651

Act LSID: urn:lsid:plantfossilnames.org:act:2651

Author: P. R. Crane

Rank: species

Genus: Craspedodromophyllum P.R.Crane

Reference: Crane, P. R. (1981): Betulaceous leaves and fruits from the British Upper Palaeocene. – Botanical Journal of the Linnean Society 83(2): 103–136.

Page of description: 107

Illustrations or figures: figs 2–12

Name is type for

Types

Original diagnosis/description

Leaves elliptic to narrowly elliptic, 40–150 mm long and 10–50 mm wide. Base acute, apex attenuate. Petiole proximally dilated, up to 26 mm in length. Secondary veins arising from the midrib alternately in 12–16 pairs, rarely opposite. Angle of divergence 15–(25–35)–60 degrees. Distance between secondary veins measured at the midrib 1–(4–11)–17 mm decreasing apically. Origin of lowermost secondary vein supra-basal. Basal veins, thin, of tertiary order, occasionally proximally contiguous with the margin. Tertiary venation percurrent, alternate, rarely opposite; straight to slightly convex, branched and unbranched. Mid-vein, tertiary angle 85–(95–110)–120 degrees. Quarternary venation orthogonal forming irregular polygonal areolae.

Etymology

From the acute apex and base.

Stratigraphy

Paleogene, Paleocene
Upper Palaeocene, Reading Beds, approximately 10 m above the chalk.

Locality

United Kingdom
Cold Ash Quarry, (SU501713) Newbury, Berkshire, England