New fossil woods of Fabaceae from El Bosque Formation (Eocene), Chiapas, Mexico

Pérez-Lara, Diana K.; Estrada‐Ruiz, Emilio; Castañeda-Posadas, Carlos

doi:10.1016/j.jsames.2019.05.018

Cited by 9 publications

(3 citation statements)

References 23 publications

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“…The occurrence of this new genus of fossil wood from the upper Eocene of northern Mexico reinforces the hypo thesis that during the middle-late Eocene several biological and geological events occurred, such as the migration of some groups of plants to the Neotropics via Boreotropical bridges between the continents, which facilitated the dispersal of various groups of plants (Week et al 2014, Rodríguez-Reyes et al 2021. This Eocene biotic exchange between North America, Europe and Asia is documented by the fossil record of different plant families, e.g., Fabaceae (Martínez Millán 2000, Ramírez & Cevallos-Ferriz 2002, Estrada-Ruiz et al 2010, Pérez-Lara et al 2019. The diversity of the fossil record of the Anacardiaceae during the Eocene in North America (including Mexico) suggests that this area was one of the centers of diversification for the family.…”

Section: Discussionsupporting

confidence: 63%

A new genus of Anacardiaceae based on wood from the Tepetate Formation (upper Eocene) of Baja California Sur, Mexico

Mejia-Roldan,

González-Barba,

Rodríguez-Reyes

et al. 2024

Bull. Geosci.

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The Anacardiaceae family is represented by trees, shrubs and some woody climbers, with circa 79 genera and 900 species, with a wide distribution in tropical, subtropical, and warm temperate regions (Mabberley 2008, Pell et al. 2010. In Mexico, this family has ~ 62 species distributed in 20 genera with some species of food importance, e.g., Spondias purpurea L. (jocote or ciruela de Tierra Caliente), or for medicinal uses, e.g., Cyrtocarpa procera to treat stomach diseases (Martínez-Millán & Cevallos-Ferriz 2005, Martinez-Elizalde et al. 2015.Anacardiaceae has an extensive fossil record worldwide, that includes flowers, fruits, pollen, leaves and woods of about 140 fossil species in over 35 genera. The records range from the Late Cretaceous to the Miocene, being very abundant during the Eocene; most of these records are from South America and Asia (Del Rio et al.

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Section: Discussionsupporting

confidence: 63%

A new genus of Anacardiaceae based on wood from the Tepetate Formation (upper Eocene) of Baja California Sur, Mexico

Mejia-Roldan,

González-Barba,

Rodríguez-Reyes

et al. 2024

Bull. Geosci.

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“…In North America, the Leguminosae were abundant and diverse during the Paleogene, suggesting North America as an important region for the evolutionary history of the family 4 . In Mexico, Leguminosae fossils have been recorded in Cenozoic sediments 9 , 11 , 39 , 40 . These fossil species recorded in Mexico have been related to both subtropical and tropical extant taxa currently growing in Central and South America 41 – 43 .…”

Section: Resultsmentioning

confidence: 99%

Late Campanian fossil of a legume fruit supports Mexico as a center of Fabaceae radiation

et al. 2021

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Fabaceae is one of the most diverse angiosperm families and is distributed across the globe in a variety of environments. The earliest evidence of the family, previous to this work, was from Paleogene sediments where it was found to be diverse in many fossil assemblages around the world. Here, we describe a fossil legume fruit from the Olmos Formation (upper Campanian) in northern Mexico. We designated the fossil fruit as Leguminocarpum olmensis Centeno-González, Martínez-Cabrera, Porras-Múzquiz et Estrada-Ruiz sp. nov., and related it with the Fabaceae family based on the presence of a dehiscent pod with two valves, an apex bearing stylar base, short stipe, and reticulated veins in the pericarp. We propose a new fossil species of Leguminocarpum for this fossil fruit. This fossil provides critical information on the long geologic history of Leguminosae around the world, significantly extending the record into the Cretaceous of Mexico.

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“…Among fossils related to Dialioideae and Cercidoideae, the genus Tzotziloxylon Pérez‐Lara & Estrada‐Ruiz (Pérez‐Lara et al, 2019) covers fossils sharing features of both subfamilies which include non‐vestured intervessel pits, aliform to occasionally confluent axial parenchyma as well as diffuse and sometimes banded up to 3‐cells thick, 1–4‐seriate rays, crystalliferous axial parenchyma and a non‐storied structure. The present fossil has more frequent confluent and banded axial parenchyma that is over 3 cell layers thick and rays larger on average than the two species described in the genus (Pérez‐Lara et al, 2019). Other genera such as Bauhinia Plum.…”

Section: Resultsmentioning

confidence: 99%

First fossil woods and palm stems from the mid‐Paleocene of Myanmar and implications for biogeography and wood anatomy

Gentis,

Licht,

De Franceschi

et al. 2024

American J of Botany

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PremiseThe rise of angiosperm‐dominated tropical rainforests has been proposed to have occurred shortly after the Cretaceous‐Paleogene transition. Paleocene fossil wood assemblages are rare yet provide important data for understanding these forests and whether their wood anatomical features can allow us to document these changes.MethodThe anatomy of eleven specimens of Paleocene‐age is described using standard terminology and their affinities to present‐day taxa is investigated.Key resultsWe report here the first middle Paleocene fossil wood specimens from Myanmar, which was near the equator and anchored to India at that time. Some fossils share affinities with Arecaceae, Sapindales (Anacardiaceae, Meliaceae) and Moraceae and possibly Fabaceae or Lauraceae. One specimen is described as a new species and genus: Compitoxylon paleocenicum gen. et sp. nov.ConclusionsThis assemblage reveals the long‐lasting presence of these aforementioned groups in South Asia and suggests the early presence of multiple taxa of Laurasian affinity in Myanmar and India. The wood anatomical features of the dicotyledonous specimens reveal that both “modern” and “primitive” features (in a Baileyan scheme) are present with proportions similar to Paleocene Indian localities. Their anatomical diversity corroborates that tropical flora display “modern” features early in the history of angiosperms, and that their high diversity remained steady afterwards.This article is protected by copyright. All rights reserved.

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New fossil woods of Fabaceae from El Bosque Formation (Eocene), Chiapas, Mexico

Cited by 9 publications

References 23 publications

A new genus of Anacardiaceae based on wood from the Tepetate Formation (upper Eocene) of Baja California Sur, Mexico

A new genus of Anacardiaceae based on wood from the Tepetate Formation (upper Eocene) of Baja California Sur, Mexico

Late Campanian fossil of a legume fruit supports Mexico as a center of Fabaceae radiation

First fossil woods and palm stems from the mid‐Paleocene of Myanmar and implications for biogeography and wood anatomy

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