Results 31 to 40 of about 919 (141)
Equisetum thermale sp. nov. (Equisetales) from the Jurassic San Agustín hot spring deposit, Patagonia: Anatomy, paleoecology, and inferred paleoecophysiology [PDF]
American Journal of Botany, 2011 • Premise of the study: Dated molecular phylogenies suggest a Cenozoic origin for the crown group of Equisetum. but compression fossil equisetaleans that are morphologically indistinguishable from extant Equisetum and recently discovered anatomically preserved examples strongly suggest an earlier Mesozoic initial diversification.• Methods: In situ ...
Channing, Alan +3 more
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Rivista Italiana di Paleontologia e Stratigrafia, 2018 The Middle Jurassic deposits of the Shemshak Group and Hojedk Formation are widespread in North, Central, and Central East Iran. In this paper, the Hojedk Formation in South Kouchekali, southwestern Tabas city, east-central Iran was studied for ...
FATEMEH VAEZ-JAVADI
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Applications in Plant Sciences, 2020 Premise Equisetum is a distinctive vascular plant genus with 15 extant species worldwide. Species identification is complicated by morphological plasticity and frequent hybridization events, leading to a disproportionately high number of misidentified ...
Kathleen M. Pryer +4 more
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Evolution of plant reproduction: from fusion and dispersal to interaction and communication [PDF]
, 2009 Based on the existing data concerning the evolution of the sexual reproduction, it is argued that the processes of sex differentiation and interactions play a key role in evolution. From the beginning environment and organism are unified.
Willemse, M.T.M.
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Phylogenie und Systematik der Gefäßpflanzen [PDF]
, 2016 Das Lehr- und Lernposter „Stammbaum der Tracheophyten – Phylogenie und Systematik der Gefäßpflanzen“ gibt einen Überblick a) über die Phylogenie (Stammesgeschichte) der „Farnverwandten“ (Lycophyten und Monilophyten, die „Farne“) bis zu den Familien ...
Cole, Theodor C.H., Hilger, Hartmut H.
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Plant macrofossils and Biostratigraphy of the Calshaneh section, NW Tabas and its palaeoclimate analysis [PDF]
Journal of Stratigraphy and Sedimentology Researches, 2016 Jurassic deposits are well exposed in the Calshaneh area, north western of the Tabas city, Central-East Iran. It contains plant macrofossils belonging to seventeen species allocated to eleven genera of various orders such as of Equisetales, Filicales ...
Fatemeh Vaez-Javadi
doaj
Systematics and Chatacteristics [PDF]
, 2016 The "Tracheophyte Phylogeny Poster – Vascular Plants - Systematics and Characteristics" is an educational tool presenting an overview of the evolutionary relationships among non-flowering vascular plants (lycophytes, monilophytes, and gymnosperms ...
Cole, Theodor C.H., Hilger, Hartmut H.
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Taxonomic decomposition of the latitudinal gradient in species diversity of North American floras [PDF]
, 2017 Aim: To test the latitudinal gradient in plant species diversity for self-similarity across taxonomic scales and amongst taxa. Location: North America. Methods: We used species richness data from 245 local vascular plant floras to quantify the slope and ...
Enquist, BJ +6 more
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Eocene–early Oligocene climate and vegetation change in southern China: Evidence from the Maoming Basin [PDF]
, 2017 Although the Eocene-Oligocene climate transition marks a critical point in the development of the ‘icehouse’ global climate of the present little is known about this important change in the terrestrial realm at low latitudes.
Aleksandrova, Galina N. +8 more
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Nature of Tasmanian oil shale [PDF]
, 1968 Since deposition, the organic matter of most oil shales has been so changed over geological time that little recognisable features remain. Microscopical examination does not provide much help for constitutional analysis and thus one cannot use ...
Cane, RF
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