Abies cuitlahuacii sp. nov., a mummified late Quaternary fossil wood from Chalco, Mexico

Sergio R.S. Cevallos-Ferriz, César Ríos-Santos, Socorro Lozano-García

Resultado de la investigación: Contribución a una revistaArtículo

Resumen

A fragment of mummified wood collected from a Quaternary sedimentary sequence of Lake Chalco, Central Mexico, in the depocenter of the Basin (19°15'26"N, 98°58'32"W), has anatomical characteristics of Abies. Identification is based on the presence of a warty layer in the walls of the tracheids, prismatic crystals in ray cells, taxodioid pits in the cross-fields, and lack of ray tracheids and normal intercellular canals, among other well-preserved characteristics. This specimen represents the first macrofossil evidence of the genus in this region and suggests that by the late Quaternary it was already established in the surroundings of Lake Chalco, and most probably in what is now central Mexico. Unfortunately, as with morphological and genetic characteristics, the anatomical attributes of the wood of the genus have not been useful for the delimitation of species. Most wood characteristics have been considered of little diagnostic value. However, comparison of available anatomical descriptions of fossil and living species highlight differences among them, even with Abies religiosa wood, which is the closest species to Lake Chalco. Other characteristics or plant organs are needed to assemble a whole plant that can be used to establish phylogenetic relationships and clarify the evolutionary history of the genus. Meanwhile this wood is assigned to a new fossil taxon, Abies cuitlahuacii Cevallos-Ferriz, Ríos-Santos & Lozano-García.

Idioma originalInglés
Páginas (desde-hasta)193-206
Número de páginas14
PublicaciónBoletin de la Sociedad Geologica Mexicana
Volumen71
N.º1
DOI
EstadoPublicada - 1 ene 2019

Huella dactilar

fossil
lake
depocenter
sedimentary sequence
canal
crystal
phylogenetics
history
basin

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title = "Abies cuitlahuacii sp. nov., a mummified late Quaternary fossil wood from Chalco, Mexico",
abstract = "A fragment of mummified wood collected from a Quaternary sedimentary sequence of Lake Chalco, Central Mexico, in the depocenter of the Basin (19°15'26{"}N, 98°58'32{"}W), has anatomical characteristics of Abies. Identification is based on the presence of a warty layer in the walls of the tracheids, prismatic crystals in ray cells, taxodioid pits in the cross-fields, and lack of ray tracheids and normal intercellular canals, among other well-preserved characteristics. This specimen represents the first macrofossil evidence of the genus in this region and suggests that by the late Quaternary it was already established in the surroundings of Lake Chalco, and most probably in what is now central Mexico. Unfortunately, as with morphological and genetic characteristics, the anatomical attributes of the wood of the genus have not been useful for the delimitation of species. Most wood characteristics have been considered of little diagnostic value. However, comparison of available anatomical descriptions of fossil and living species highlight differences among them, even with Abies religiosa wood, which is the closest species to Lake Chalco. Other characteristics or plant organs are needed to assemble a whole plant that can be used to establish phylogenetic relationships and clarify the evolutionary history of the genus. Meanwhile this wood is assigned to a new fossil taxon, Abies cuitlahuacii Cevallos-Ferriz, R{\'i}os-Santos & Lozano-Garc{\'i}a.",
keywords = "Abies cuitlahuacii, Anatomical characteristics, Lake Chalco, Late Quaternary, Mummified wood",
author = "Cevallos-Ferriz, {Sergio R.S.} and C{\'e}sar R{\'i}os-Santos and Socorro Lozano-Garc{\'i}a",
year = "2019",
month = "1",
day = "1",
doi = "10.18268/BSGM2019v71n1a10",
language = "Ingl{\'e}s",
volume = "71",
pages = "193--206",
journal = "Boletin de la Sociedad Geologica Mexicana",
issn = "1405-3322",
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Abies cuitlahuacii sp. nov., a mummified late Quaternary fossil wood from Chalco, Mexico. / Cevallos-Ferriz, Sergio R.S.; Ríos-Santos, César; Lozano-García, Socorro.

En: Boletin de la Sociedad Geologica Mexicana, Vol. 71, N.º 1, 01.01.2019, p. 193-206.

Resultado de la investigación: Contribución a una revistaArtículo

TY - JOUR

T1 - Abies cuitlahuacii sp. nov., a mummified late Quaternary fossil wood from Chalco, Mexico

AU - Cevallos-Ferriz, Sergio R.S.

AU - Ríos-Santos, César

AU - Lozano-García, Socorro

PY - 2019/1/1

Y1 - 2019/1/1

N2 - A fragment of mummified wood collected from a Quaternary sedimentary sequence of Lake Chalco, Central Mexico, in the depocenter of the Basin (19°15'26"N, 98°58'32"W), has anatomical characteristics of Abies. Identification is based on the presence of a warty layer in the walls of the tracheids, prismatic crystals in ray cells, taxodioid pits in the cross-fields, and lack of ray tracheids and normal intercellular canals, among other well-preserved characteristics. This specimen represents the first macrofossil evidence of the genus in this region and suggests that by the late Quaternary it was already established in the surroundings of Lake Chalco, and most probably in what is now central Mexico. Unfortunately, as with morphological and genetic characteristics, the anatomical attributes of the wood of the genus have not been useful for the delimitation of species. Most wood characteristics have been considered of little diagnostic value. However, comparison of available anatomical descriptions of fossil and living species highlight differences among them, even with Abies religiosa wood, which is the closest species to Lake Chalco. Other characteristics or plant organs are needed to assemble a whole plant that can be used to establish phylogenetic relationships and clarify the evolutionary history of the genus. Meanwhile this wood is assigned to a new fossil taxon, Abies cuitlahuacii Cevallos-Ferriz, Ríos-Santos & Lozano-García.

AB - A fragment of mummified wood collected from a Quaternary sedimentary sequence of Lake Chalco, Central Mexico, in the depocenter of the Basin (19°15'26"N, 98°58'32"W), has anatomical characteristics of Abies. Identification is based on the presence of a warty layer in the walls of the tracheids, prismatic crystals in ray cells, taxodioid pits in the cross-fields, and lack of ray tracheids and normal intercellular canals, among other well-preserved characteristics. This specimen represents the first macrofossil evidence of the genus in this region and suggests that by the late Quaternary it was already established in the surroundings of Lake Chalco, and most probably in what is now central Mexico. Unfortunately, as with morphological and genetic characteristics, the anatomical attributes of the wood of the genus have not been useful for the delimitation of species. Most wood characteristics have been considered of little diagnostic value. However, comparison of available anatomical descriptions of fossil and living species highlight differences among them, even with Abies religiosa wood, which is the closest species to Lake Chalco. Other characteristics or plant organs are needed to assemble a whole plant that can be used to establish phylogenetic relationships and clarify the evolutionary history of the genus. Meanwhile this wood is assigned to a new fossil taxon, Abies cuitlahuacii Cevallos-Ferriz, Ríos-Santos & Lozano-García.

KW - Abies cuitlahuacii

KW - Anatomical characteristics

KW - Lake Chalco

KW - Late Quaternary

KW - Mummified wood

UR - http://www.scopus.com/inward/record.url?scp=85067013155&partnerID=8YFLogxK

U2 - 10.18268/BSGM2019v71n1a10

DO - 10.18268/BSGM2019v71n1a10

M3 - Artículo

AN - SCOPUS:85067013155

VL - 71

SP - 193

EP - 206

JO - Boletin de la Sociedad Geologica Mexicana

JF - Boletin de la Sociedad Geologica Mexicana

SN - 1405-3322

IS - 1

ER -