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Cordioxylon prototrichotoma

Taxonomy
Cordioxylon prototrichotoma was named by Brea and Zucol (2006) [Botanical affinity: Cordia trichotoma. In minor rank Cordia glabrata.]. It is considered to be a form taxon. Its type specimen is LPPB 11278, pmLPPB 1694, 1695, 1696., a wood, and it is a 3D fossil preserving soft parts. Its type locality is Puerto Visser, which is in a Paleocene terrestrial sandstone/sandstone in the Peñas Coloradas Formation of Argentina.

Synonymy list
YearName and author
2006Cordioxylon prototrichotoma Brea and Zucol

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RankNameAuthor
genusCordioxylonAwasthi 1984
RankNameAuthor
speciesprototrichotoma

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

Diagnosis
ReferenceDiagnosis
M. Brea and A. F. Zucol 2006Anillos de crecimiento ausentes. Vasos: porosidad difusa con tendencia a la disposición diagonal; poros agrupados y solitarios, raramente múltiples radiales de dos elementos y ocasionalmente múltiples radiales de 3, 4 y 5 elementos; diámetro tangencial de 56-210 µm, promedio de 129.36 µm; diámetro radial de 56-280 µm, promedio de 141.68 µm; longitud 77.2-540.4 µm; placa de perforación simple; punteaduras intervasculares alternas, pequeñas y levemente ornadas; elementos de vaso numerosos y cortos. Radios: cortos, anchos y numerosos; heterocelulares y heterogéneos; multiseriados raramente uniseriados y biseriados. Fibras: cuadrangulares, no septadas, de paredes muy delgadas y abundantes. Parénquima axial: paratraqueal escaso, parénquima en bandas de una célula de ancho y apotraqueal difuso y difuso agregado.