Helicostyloxylon paranensis C.M.Mart.Mart.

Plant Fossil Names Registry Number: PFN003050

Act LSID: urn:lsid:plantfossilnames.org:act:3050

Author: C. M. Martinez Martinez

Rank: species

Genus: Helicostyloxylon C.M.Mart.Mart.

Reference: Martinez Martinez, C. M. (2023): New Records of Moraceae from the Upper Miocene of Northeastern Argentina. – Ameghiniana 60(1): 78–96.

Page of description: 81

Illustrations or figures: figs 2–5

Name is type for

Types

Original diagnosis/description

Growth rings boundaries distinct; wood diffuseporous; vessels mainly solitary, few radial multiples and rarely in clusters, with tyloses, vessels size from small to moderate; simple perforation plates; intervessel pits alternate, circular to oval; vessel-axial parenchyma and vessel-ray parenchyma pits similar to intervessel pits; septate and non-septate fibres, polygonal in outline, thin to thick-walled; axial parenchyma vasicentric, unilateral,
confluent and 3–8 cells per parenchyma strand; rays 1– multiseriate, body ray of procumbent cells with 1–4 rows of upright and/or square marginal cells and also procumbent, square and upright cells mixed throughout the ray; 1–2 laticifers/tanniniferous tubes in some rays; prismatic crystals in rays cells; interconnected rays.

Etymology

The specific epithet refers to the city of paraná (Entre Ríos, Argentina), where the fossil materials were collected.

Stratigraphy

Neogene, Miocene
Ituzaingó Formation (upper Miocene).

Locality

Argentina
Ituzaingó Formation, Toma Vieja, Entre Ríos, Argentina