Agathoxylon santacruzense Kloster et Gnaedinger
Plant Fossil Names Registry Number: PFN000203
Act LSID: urn:lsid:plantfossilnames.org:act:203
Reference: Kloster, A. C. & Gnaedinger, S. C. (2018): Coniferous wood of Agathoxylon from the La Matilde Formation, (Middle Jurassic), Santa Cruz, Argentina. – Journal of Paleontology 92(4): 546–567.
Page of description: 557
Illustrations or figures: figs 7, 8
Holotype CTES-PB 12012, CTES-PMP 2433 a, b, c, Universidad Nacional de Nordeste, “Dr. Rafael Herbst” Paleobotany Section, Corrientes, Argentina
Figures: figs 7, 8
Paratype: CTES-PB 12013, CTES-PMP 2434 a, b, c
Wood type (tracheid radial pitting) is araucarian (100% of the contiguous pits are araucarioid). Pits are araucarioid, uniseriate, flattened, and circular; alternate biseriate, circular, and hexagonal; uniseriate, partially biseriate, alternate, circular, hexagonal-flattened; and opposite circular, hexagonal-flattened in a pair or several pairs (japonicum type); and triseriate and bitriseriate, alternate circular and hexagonal. Cross-fields are araucarioid, with 2–14, 20 pits, circular, with elliptical or sometimes circular apertures, whose frequency range is 6–8 pits, arranged in disordered groups or crown-shaped or some in two or four horizontal rows. The rays are homogeneous, mostly uniseriate, and the height in number of cells is 1–16, 20.
In reference to Santa Cruz province, Argentina, where the analyzed wood was found.
Jurassic, Middle Jurassic
La Matilde Formation
Santa Cruz Province
Plant fossil remain