An Early Permian Coastal Flora from the Central Basin Platform of Gaines County, West Texas

DiMichele, William A.; Chaney, Dan S.; Dixon, William Hepworth; Nelson, W. John; Hook, Robert W.

doi:10.2307/3515616

Cited by 8 publications

(11 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…11). These are illustrated here because they are comparable to specimens illustrated by DiMichele et al (2000) from the late Early Permian of West Texas, which were not identifed, but which possibly are Supaia and occur in near-shore environments in association with Taeniopteris, Delnortea, and the likely peltasperm, Comia. White (1929) characterized Supaia as a complex of small, "herbaceous" plants.…”

Section: Supaia Thinnfeldioides Whitementioning

confidence: 68%

A low diversity, seasonal tropical landscape dominated by conifers and peltasperms: Early Permian Abo Formation, New Mexico

DiMichele

Chaney

Nelson

et al. 2007

Review of Palaeobotany and Palynology

Self Cite

View full text Add to dashboard Cite

Section: Supaia Thinnfeldioides Whitementioning

confidence: 68%

A low diversity, seasonal tropical landscape dominated by conifers and peltasperms: Early Permian Abo Formation, New Mexico

DiMichele

Chaney

Nelson

et al. 2007

Review of Palaeobotany and Palynology

Self Cite

View full text Add to dashboard Cite

“…The as-yet-undescribed Upper Pease River flora is quite limited in composition, with cordaitean material most conspicuous and minor representatives of calamites, gigantopterids, and pteridophylls. The flora of the Del Norte mountains is species poor and dominated by the gigantopterid genus Delnortea, a flora possibly characteristic of coastal regions (DiMichele et al, 2000). The lower Pease River flora indicates that the radiation of major Mesozoic seed-plant-lineages was well advanced by the Early Permian.…”

Section: Discussionmentioning

confidence: 99%

An Early Permian flora with Late Permian and Mesozoic affinities from north-central Texas

et al. 2001

Self Cite

View full text Add to dashboard Cite

Early Permian (late Leonardian Series) plant assemblages from King, Knox, and Stonewall Counties of North-Central Texas are dominated by seed plants, some apparently congeneric with taxa heretofore known only from the Late Permian or the Mesozoic. Conifers are the dominant elements, including one or more species of Ullmannia, Pseudovoltzia liebeana, both known from the Late Permian Zechstein flora of Germany and England, Podozamites sp., characteristic of the Mesozoic, and Walchia sp., abundant in Early Permian floras. Locally common are Taeniopteris cf. eckardtii, a Zechstein species, an unidentified plant represented by pinnulelike laminae with fine parallel veins, similar to pinnules of some Mesozoic cycads, and calamite stems. Rarely encountered are leaf fragments of the Paleozoic ginkgophyte Dicranophyllum, flabellate ginkgophyte leaves, leaves with a broad midvein and narrow, fimbriate lamina, and Wattia, typical of the Early Permian. Associated with these foliar remains are ovulate reproductive structures including the presumed cycad megasporophyll Dioonitocarpidium, known only from the Mesozoic, a voltzialean cone scale similar to Swedenborgia, and a variety of seeds, some remarkably similar to Agathis, of Cretaceous age. The assemblage includes only rare scraps of foliage and seeds possibly attributable to the pteridophyllous elements (gigantopterids, callipterids, and ferns) that dominate the Permian. The fossil plants occur in multistorey, fining-upwards, tidal-channel deposits that also include pelecypods and fragmentary palaeoniscoid fish. The occurrence of derived lineages in xeric habitats during the Early Permian indicates that some supposed Mesozoic groups actually preceded and survived the end-Permian extinction, reappearing in basinal lowlands during the mid-Mesozoic.

show abstract

“…The presence of Calnalia and other taxa yet to be described in the Sierra Madre terrane reinforces this model. Preliminary surveys of at least six localities in the Tuzancoa Formation suggest similarities with Permian floras of Texas (DiMichele et al, 2000(DiMichele et al, , 2001. Furthermore, walchian conifer remains found in Texas resemble typical Lebachioid conifers and Walchian Voltziales (DiMichele et al, 2000(DiMichele et al, , 2001Looy, 2007Looy, , 2007a.…”

Section: Permian Outcrops and Conifers Of Mexicomentioning

confidence: 94%

“…Preliminary surveys of at least six localities in the Tuzancoa Formation suggest similarities with Permian floras of Texas (DiMichele et al, 2000(DiMichele et al, , 2001. Furthermore, walchian conifer remains found in Texas resemble typical Lebachioid conifers and Walchian Voltziales (DiMichele et al, 2000(DiMichele et al, , 2001Looy, 2007Looy, , 2007a. Some of these Texan conifers resemble branches/leaves of Calnalia, while others resemble typical branches/leaves and cones of Upper Permian Majonicaceae conifers (Looy, 2007).…”

Section: Permian Outcrops and Conifers Of Mexicomentioning

confidence: 94%

Early Permian conifer remains from Central Mexico and reevaluation of Paleozoic conifer morphotaxa

Hernandez‐Castillo¹,

Silva-Pineda

2014

BSGM

View full text Add to dashboard Cite

This paper describes the first Permian walchian conifer from Mexico based on several specimens preserved as compressions/ impressions. The material comes from the Tuzancoa Formation in the state of Hidalgo, Central Mexico. It is described as Calnalia hidalguensis gen. nov. et sp. nov. a new conifer morphotaxon based on isolated lateral branches with leaves. This new conifer has some of the smallest branches and leaves found among previously described walchians. Calnalia hidalguensis has two types of branches (ovoid and deltoid) with simple and helically arranged leaves. Leaves are narrowly triangular to linear in front view, slightly concave and spreading (penultimate shoots) to slightly concave to slightly S-shaped (ultimate shoots), in side view. Leaves range from 3.2 mm long by 0.5 mm wide on penultimate shoots, to 1.3 -2.9 mm long by 0.4 -0.9 mm wide on ultimate shoots, with angles of leaf insertion ranging from 16º to 39º. The new species is most similar to Emporia lockardii Mapes and Rothwell, Walchia goeppertiana Florin, Walchia mucronata Florin, and Otovicia hypnoides Kerp, Poort, Swinkels & Verwer. However, none of these have the same ranges of morphological variation found in the leaves of Mexican species. The new taxon expands the diversity of walchian conifers at the end of the Paleozoic in America, and marks the beginning of new research of Permian floras in Mexico. The presence of C. hidalguensis and other gymnosperms, to be described, reinforces the presence of an arc along the Oaxaquia block that connected Mexico to the North American craton during the late Paleozoic. These new data also allow us to test hypotheses about the origin and evolution of Paleozoic floras in Euramerica.Keywords: conifer, Mexico, morphotaxa, Permian, Walchia. Resumen Este artículo describe la primera conífera pérmica "walchiana" con base en varias compresiones e impresiones fósiles de la Formación Tuzancoa en el Estado de Hidalgo, Centro de México. Se describe como Calnalia hidalguensis gen. nov. et sp. nov., un nuevo morfotaxón de coníferas basados en ramas laterales y hojas. Esta nueva conífera tiene unas de las ramas más pequeñas descritas hasta ahora para los miembros "walchianos" en el registro fósil, y cuenta con dos tipos de ramas (ovoide y deltoide), las cuales portan hojas simples con filotaxia helicoidal. Las hojas son ligeramente triangulares a lineares; lateralmente son ligeramente cóncavas a abiertas (penúltimo orden), y ligeramente cóncavas a ligeramente en forma de "S" (último orden

show abstract

An Early Permian Coastal Flora from the Central Basin Platform of Gaines County, West Texas

Cited by 8 publications

References 3 publications

A low diversity, seasonal tropical landscape dominated by conifers and peltasperms: Early Permian Abo Formation, New Mexico

A low diversity, seasonal tropical landscape dominated by conifers and peltasperms: Early Permian Abo Formation, New Mexico

An Early Permian flora with Late Permian and Mesozoic affinities from north-central Texas

Early Permian conifer remains from Central Mexico and reevaluation of Paleozoic conifer morphotaxa

Contact Info

Product

Resources

About