Goniorrhachisinoxylon sergioarchangelskii T.L.Dutra, L.C.A.Martínez et Wilberger

Plant Fossil Names Registry Number: PFN003157

Act LSID: urn:lsid:plantfossilnames.org:act:3157

Authors: T. L. Dutra, L. C. A. Martínez & T. Wilberger

Rank: species

Genus: Goniorrhachisinoxylon L.C.A.Martínez, T.L.Dutra et Wilberger in Dutra, Martínez & Wilberger

Reference: Dutra, T. L., Martínez, L. C. A. & Wilberger, T. (2023): A new fossil wood of Detarioideae from the Boa Vista Basin, Upper Oligocene (Northeast Brazil): Comparisons with living and fossil Leguminosae Subfamilies. Paleoclimate and biogeography inferences for the Leguminosae story. – Review of Palaeobotany and Palynology 317: 1–18.

Page of description: 4

Illustrations or figures: pls I–III

Name is type for

Goniorrhachisinoxylon L.C.A.Martínez, T.L.Dutra et Wilberger in Dutra, Martínez & Wilberger 2023


Holotype ULVG-8972, Museum of Geological History of Rio Grande do Sul (MHGEO) at Vale do Rio dos Sinos University (UNISINOS)
Figures: pls I–II

Note: Paratypes: ULVG-8963 (pl. III), ULVG-8970 & ULVG-8971.

Original diagnosis/description

Secondary xylem with distinct growth rings, marked by terminal parenchyma. Diffuse porous wood. Vessels circular to oval in outline, solitary, in radial multiples of 2–4, and/or diagonal pattern. Vessel elements of medium size, often with short tails. Intervessel pits medium, alternate, and vestured. Small helical thickenings in vessel elements. Axial paratracheal parenchyma mainly aliform to aliform confluent, rarely lozenge–aliform. Axial parenchyma in narrow bands and marginal parenchyma. Parenchyma cells in strand with 2–4 cells. Prismatic crystals in chambered axial parenchyma cells. Rays homocellular, procumbent cells, 1–2 seriate. Fibres thick-walled. All elements storied.


The specific name is dedicated to Dr. Sergio Archangelsky for his important contributions and extensive studies on the fossil plants.


Paleogene, Oligocene
Campos Novos Formation


Juá II Mine (7º 20’–7º 21’ S and 36º 10’– 36º 16’ W)

Plant fossil remain

fossil wood


Use comments to notify PFNR administrators of mistakes or incomplete information relevant to this record.