Fossil Woods from the El Cien Formation in Baja California Sur: Leguminosae

Cevallos-Ferriz, Sergio R.S.; Barajas-Morales, Josefina

doi:10.1163/22941932-90000600

Cited by 29 publications

(15 citation statements)

References 15 publications

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“…Globally, legume fossil fruits have been described from Cenozoic sediments worldwide 4 , 6 , 8 – 12 , 18 – 25 . The fossil fruits Mezoneuron claibornensis Herendeen and Dilcher, Mezoneuron flumen-viridensis Herendeen and Dilcher, and Mezoneuron spokanensis (Knowlton) Herendeen and Dilcher, share with L .…”

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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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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“…This conclusion is based on the presence of wood in the Eocene Clarno Formation (Oregon, USA; Manchester, 1977) and in the Oligocene and Oligocene-Miocene San Gregorio and El Cien Formations (Baja California and Baja California Sur, Mexico; Cevallos-Ferriz and Barajas-Morales, 1992), as well as on Miocene flowers from Chiapas, Mexico (Miranda, 1963). Comments and suggestions on a previous manuscript by J.…”

mentioning

confidence: 99%

A diverse assemblage of Anacardiaceae from Oligocene sediments, Tepexi de Rodriguez, Puebla, Mexico

Ramı́rez

Cevallos-Ferriz

2002

American J of Botany

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Among the plants collected from the Pie de Vaca Formation of the Oligocene, of Tepexi de Rodríguez, Puebla, México are five plants of Anacardiaceae, Haplorhus medranoensis, Rhus toxicodendron, Rhus sp., Comocladia intermedia, and Pistacia marquezii represented by their leaves and/or leaflets. The past and present diversity and geographic distribution of one of these genera, Rhus, demonstrate its capability to adapt and diversify in a wide variety of environments. Leaf architecture characters of this taxon overlap with those of other genera in the family, suggesting a high degree of phenotypic plasticity. The presence in the Pie de Vaca Formation of a type of Pistacia with leaf architecture characters similar to those of Asian plants further supports a long history of exchange between low-latitude North America and Asia. Links between low-latitude North and South America and the Caribbean are suggested by the presence of Comocladia and Haplorhus. Whereas Comocladia highlights the long history of regional endemics in the area, Haplorhus, today an endemic monotypic genus of Peru, suggests exchange mechanisms between North and South America. The morphologic characters of these taxa, and those of Pseudosmodingium (Anacardiaceae), some Rosaceae, Leguminosae, and Berberidaceae, suggest that the Pie de Vaca community was established and evolved in harsh environmental conditions. The Pie de Vaca flora thus provides significant new insights into the biogeographic relationships of the low latitude vegetation of North America.

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“…Some plant species from the El Cien formation display affinities with western Africa and eastern Brazil (Copaifera), whilst other taxa (e.g. Tapirira) occurring today in the Isthmus of Tehuantepec have affinities with northern South America (Cevallos-Ferriz & Barajas-Morales, 1994). From this information we can conclude that plants presently considered typical of Neotropical communities, such as Andira, Ficus, Maclura, and Tetragastroxylon, grew in Mexico at least since some ca.…”

Section: Origin Of the Mexican Seasonally Dry Tropical Floramentioning

confidence: 86%

Flora y vegetación de los trópicos estacionalmente secos en México: origen e implicaciones biogeográficas

2022

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Entre las diversas ideas que se han propuesto para explicar la gran diversidad biológica de México está la que afirma que ésta es el resultado del contacto de las biotas neotropical y neártica; sin embargo, esta explicación relacionada con el gran contacto biótico de las Américas no es completamente satisfactoria y necesita ser revisada a la luz de la biogeografía histórica. En este artículo ofrecemos nuevas perspectivas sobre este asunto por medio de una revisión de la historia de la flora y la heterogeneidad vegetacional del trópico estacionalmente seco de este país. Se han usado varios criterios ambientales para definir las regiones tropicales estacionalmente secas, pero ubicar con precisión sus límites geográficos no es siempre fácil. Esto se debe en gran medida a la gran heterogeneidad de la vegetación presente en esta región, entre la que predomina el bosque tropical caducifolio (BTC). El origen de la flora del BTC se remonta, por lo menos, unos 20 millones de años antes del presente y parece estar asociada con la flora del Terciario de Norteamérica. La evidencia disponible no apoya un origen sudamericano para el BTC. Asimismo, no hay razones que justifiquen de forma convincente la separación de la flora del BTC y la de los desiertos calientes de Norteamérica en dos reinos biogeográficos diferentes. La historia de la flora del trópico estacionalmente seco de México sugiere fuertemente que esta dicotomía biogeográfica debería ser reemplazada por el reconocimiento de la existencia de un Reino Panamericano.

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Fossil Woods from the El Cien Formation in Baja California Sur: Leguminosae

Cited by 29 publications

References 15 publications

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

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

A diverse assemblage of Anacardiaceae from Oligocene sediments, Tepexi de Rodriguez, Puebla, Mexico

Flora y vegetación de los trópicos estacionalmente secos en México: origen e implicaciones biogeográficas

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