The fossil flora of Great Britain. Or, figures and descriptions of the vegetable remains found in a fossil state in this country /

Lindley, John; Hutton, William

doi:10.5962/bhl.title.144677

Cited by 19 publications

(27 citation statements)

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“…If the pinnae were removed and only the rachis and aphlebiae fossilized, the appearance of such fossils (cf. Lindley & Hutton, 1833–35: plate 101) would closely parallel that seen in the Perissothallus specimens addressed above. This fact has probably led some scholars to believe that Schizopteris fossils generally represent aphleboid foliage.…”

Section: Discussionsupporting

confidence: 68%

“…This suggests that Perissothallus may have reproduced vegetatively by producing daughter thalli from specialized, prostrate branches, which may be termed ‘runners’ or ‘runner branches’. It is particularly interesting in this context that Lindley & Hutton (1833–35: 58–60, plate 100) describe and illustrate a rachis portion of Sphenopteris ( Pecopteris ) crenata Lindley et Hutton with several pinnae and Schizopteris ‐type aphlebiae (which they interpret as a parasitic liverwort) positioned adaxially on the rachis. If the pinnae were removed and only the rachis and aphlebiae fossilized, the appearance of such fossils (cf.…”

Section: Discussionmentioning

confidence: 99%

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Perissothallus, a new genus for Late Pennsylvanian–Early Permian noncalcareous algae conventionally assigned to Schizopteris (aphleboid foliage)

Krings

Klavins

Barthel

et al. 2007

Botanical Journal of the Linnean Society

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The morphogenus Schizopteris was established in the early 19th century for late Palaeozoic aphleboid foliage of uncertain affinities, and numerous specimens have subsequently been assigned to this taxon. Some of these fossils do not represent foliage, but rather noncalcareous algae. Although this inconsistency has been noted, an attempt to exclude the algae from Schizopteris has not yet been undertaken. Here we propose the new genus Perissothallus to accommodate those fossils conventionally assigned to Schizopteris that represent algae. The name P. versiformis is introduced for the type species from the Upper Pennsylvanian of Kansas (USA). Specimens from the Lower Permian of Germany are interpreted as a second species of Perissothallus , and the name P. densus is proposed. Perissothallus consists of erect cylindrical branches that radiate from a small holdfast and dichotomize repeatedly. Vegetative reproduction occurs in the form of daughter thalli produced on prostrate branches. Similarities in basic structure exist between Perissothallus and members of the extant algal genera Codium (Chlorophyta), Dictyota (Phaeophyta), and Scinaia (Rhodophyta).

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Section: Discussionsupporting

confidence: 68%

Section: Discussionmentioning

confidence: 99%

Perissothallus, a new genus for Late Pennsylvanian–Early Permian noncalcareous algae conventionally assigned to Schizopteris (aphleboid foliage)

Krings

Klavins

Barthel

et al. 2007

Botanical Journal of the Linnean Society

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“…The Crato leaves resemble Lindleycladus lanceolatus (Lindley & Hutton, 1836) Harris, 1979 in gross morphology, as well as in the arrangement and orientation of stomata. Thus there is no reason to doubt a southern hemisphere occurrence of Lindleycladus in the Cretaceous.…”

Section: Lindleycladus Harris 1979mentioning

confidence: 95%

Gymnosperms from the Lower Cretaceous Crato Formation (Brazil). I. Araucariaceae and Lindleycladus (incertae sedis)

Kunzmann

Mohr

Bernardes-de-Oliveira

2008

Fossil Record

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Fossil conifers from the Early Cretaceous, most likely late Aptian, Crato Formation were studied. The excellent preservation of several of those fossils allowed detailed investigations of the leaf epidermis by light microscope (LM) and by scanning electron microscope (SEM). Members of two conifer taxa were recognized: The Araucariaceae are represented by a female cone of cf. Aruucuriu spec. A juvenile cone (Araucuriostrobus spec.) and sterile foliage shoots of Brachyphyllum obesuni might be attributed to the Araucariaceae as well. The morpho-genus Lindleycludus (incertae sedis) is represented by foliage shoots. The occurrence of Lzndleycludus is the first record of this extinct morpho-genus in the Southern Hemisphere. Anatomical features of these conifers are interpreted as adaptations to a warm seasonally dry climate. Taphonomic problems concerning these conifer remains are discussed. ZusammenfassungFossile Koniferen aus der unterkretazischen, hochstwahrscheinlich oberaptischen Crato Formation wurden untersucht. Die ausgezeichnete Erhaltung einiger Exemplare gestattete die Analyse von Blattepidermen mittels Licht-und Rasterelektronenmikroskop. Vertreter zweier Koniferentaxa wurden nachgewiesen: Araucariaceae kommen mit einem weiblichen Zapfen von cf. Araucuriu spec. vor. Ein juveniler Zapfen (Araucuriostrobus spec.) und sterile Zweige mit der Beblatterung der Morpho-Species Brachyphyllum obesum werden unter Vorbehalt ebenfalls zu den Araucariaceae gestellt. Vegetative Organe der Morpho-Gattung Lindleycludus (incertae sedis) sind ebenfalls erhalten. Das Vorkommen von Lindleycludus ist ein erster Nachweis dieser fossilen Morpho-Gattung in der Sudhemisphare. Anatomische Merkmale dieser Koniferen werden als Anpassungen an ein warmes, saisonal trockenes Klima gedeutet. Im Zusammenhang mit den Koniferenresten werden taphonomische Probleme diskutiert.

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“…comm.) of the publication dates of the fascicules of The fossil flora of Great-Britain (Lindley & Hutton, 1832-1836 improved those given by Stafleu & Cowan (1981: 54). Falcon-Lang found that P. eggensis was validly published in April 1832 (cf.…”

Section: Nomenclature Backgroundmentioning

confidence: 60%

“…& Hutton 1832. However, though Endlicher included Pinites (with references to the works of both Witham, 1833, andLindley &Hutton, 1832) as a synonym of Dadoxylon, he also (1847: 293) clearly excluded Pinites eggensis Lindl. & Hutton.…”

Section: Nomenclature Backgroundmentioning

confidence: 99%

Which name(s) should be used for Araucaria‐like fossil wood?—Results of a poll

Cittert

McLoughlin

Zijlstra

et al. 2014

TAXON

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Araucarioxylon Kraus is a widely known fossil-genus generally applied to woods similar to that of the extant Araucariaceae. However, since 1905, several researchers have pointed out that this name is an illegitimate junior nomenclatural synonym. At least four generic names are in current use for fossil wood of this type: Agathoxylon Hartig, Araucarioxylon, Dadoxylon Endl. and Dammaroxylon J.Schultze-Motel. This problem of inconsistent nomenclatural application is compounded by the fact that woods of this type represent a wide range of plants including basal pteridosperms, cordaitaleans, glossopterids, primitive conifers, and araucarian conifers, with a fossil record that extends from the Devonian to Holocene. Conservation of Araucarioxylon has been repeatedly suggested but never officially proposed. Since general use is a strong argument for conservation, a poll was conducted amongst fossil wood anatomists in order to canvass current and preferred usage. It was found that the community is divided, with about one-fifth recommending retention of the well-known Araucarioxylon, whereas the majority of others advocated use of the legitimate Agathoxylon. The arguments of the various colleagues who answered the poll are synthesized and discussed. There is clearly little support for conservation of Araucarioxylon. A secondary aspect of the poll tackled the issue as to whether Araucaria-like fossil woods should be either gathered into a unique fossil-genus, or whether two fossil-genera should be recognized, based on the respective presence or absence of axial parenchyma. A majority of colleagues favoured having one fossil-genus only. Agathoxylon can be used legitimately and appears to be the most appropriate name for such woods. However, its original diagnosis must be expanded if those woods lacking axial parenchyma are to be included.

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The fossil flora of Great Britain. Or, figures and descriptions of the vegetable remains found in a fossil state in this country /

Cited by 19 publications

References 0 publications

Perissothallus, a new genus for Late Pennsylvanian–Early Permian noncalcareous algae conventionally assigned to Schizopteris (aphleboid foliage)

Perissothallus, a new genus for Late Pennsylvanian–Early Permian noncalcareous algae conventionally assigned to Schizopteris (aphleboid foliage)

Gymnosperms from the Lower Cretaceous Crato Formation (Brazil). I. Araucariaceae and Lindleycladus (incertae sedis)

Which name(s) should be used for Araucaria‐like fossil wood?—Results of a poll

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