1-20 OF 47 RESULTS FOR

Zygnemataceae

Results shown limited to content with bounding coordinates.
Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
×Close Modal
Sort by
Journal Article
Published: 01 July 1992
Micropaleontology (1992) 38 (3): 237-260.
Image
Representative taxa for marine acritarchs considered giants (groups A44, A4...
in > Palynology
Published: 01 January 2009
PLATE 4 Representative taxa for marine acritarchs considered giants (groups A44, A45), nonmarine Zygnemataceae (group N2), and nonmarine acritarchs (groups N3–N5). Scale bar = 20 μm. Abbreviations for collections as for Plate 1 . The England Finder coordinate is given in parentheses following
Journal Article
Journal: Palynology
Published: 01 June 2013
Palynology (2013) 37 (1): 48-61.
... and onwards (e.g. Frémy & Dangeard 1938 ; Cookson 1953 ), fossil resting spores of the zygnemataceae were not recognised as belonging to this extant green algal family until the 1970s ( van Geel 1976 , 1978 , 1979 ; Davis et al. 1977 ). Since the 1990s, zygnematacean zygospores have become accepted...
FIGURES | View All (5)
Journal Article
Published: 01 June 1995
Journal of the Geological Society (1995) 152 (3): 449-468.
... and microscopic characterization of outer seed coats of fossil and extant water plants Geochimica et Cosmochimica Acta 1994 58 3823 3844 van Geel B. Fossil spores of Zygnemataceae in ditches of a prehistoric settlement in Hoogkarspel (The Netherlands) Review of Palaeobotany and Palynology 1976...
Journal Article
Journal: Palynology
Published: 01 November 2015
Palynology (2015) 39 (3): 362-386.
... this subgroup and the upper (A 1 ) is the low frequencies of podocarpacean pollen (1%; Upland PEG). The presence of Zygnemataceae suggests the development of ephemeral water bodies that may be related to fluvial environments. The abundant presence of Araucariaceae and Cheirolepidiaceae, associated...
FIGURES | View All (11)
Journal Article
Published: 01 November 2004
Proceedings of the Yorkshire Geological Society (2004) 55 (2): 145-158.
... Palynologists Foundation , 1 , 181 – 189 . Hoshaw , R. W. & McCourt , R. M. 1988 . The zygnemataceae (Chlorophyta): a twenty year update of research . Phycologia , 27 , 511 – 548 . Krassilov , V. A. , Afonin , S. A. & Barinova , S. S. 1999 . Tympanicysta...
FIGURES | View All (10)
Journal Article
Journal: Palynology
Published: 01 March 2016
Palynology (2016) 40 (1): 122-136.
... minor and Zygnemataceae, in this section indicates freshwater input into the depositional environment, most likely from a fluvial source. The abundance of fungal spores also supports a continuously wet tropical climate, especially in times of peaks in fungal spores. Gymnosperms such as Taxodiaceae...
FIGURES | View All (7)
Journal Article
Journal: Palynology
Published: 01 December 2011
Palynology (2011) 35 (2): 155-178.
... green algae have long been recognised as common in microfossil material prepared for pollen analysis ( Davis 1975 ; van Geel 1976 , 1979 ). Zygnemataceae produce their spores in spring in shallow (often less than 0.5 m deep), stagnant, clean, oxygen rich warm water. They may also occur near margins...
FIGURES | View All (7)
Journal Article
Journal: Geology
Published: 01 September 2011
Geology (2011) 39 (9): 883-886.
... ). Alternatively, on the basis of morphological ( Afonin et al., 2001 ), but particularly chemical ( Foster et al., 2002 ) criteria, an algal interpretation is regularly advocated. Notably, freshwater green algae of the Zygnemataceae are regarded as nearest living relatives. Ecologically, these contentious...
FIGURES
Journal Article
Journal: Palynology
Published: 22 December 2017
Palynology (2017) 41 (0): 1-9.
... occurrences of Hydrodictyaceae, ?Scenedesmaceae and Zygnemataceae. Commission International de Microflore du Paléozoïque, Acritarch Subcomission Meeting. Prague, CZ: Abstracts: p. 26. 1998 Wood GD, Miller MA, Pocknall DT, Aleman AM, Stein JA, Rodolfo D. Paleoclimatologic, paleoecologic...
Journal Article
Journal: Palynology
Published: 03 April 2017
Palynology (2017) 41 (2): 171-179.
... into the differential corrosion susceptibility of pollen and spores . Pollen et Spores 6 : 621 – 635 . Havinga AJ. 1967 . Palynology and pollen preservation . Review of Palaeobotany and Palynology 2 : 81 – 98 . Head MJ. 1992 . Zygospores of Zygnemataceae (Division Chlorophyta) and other...
Journal Article
Journal: Palynology
Published: 01 July 2015
Palynology (2015) 39 (2): 258-269.
... Cheirolepidiaceae Classopollis Pinaceae Indusiisporites, Cerebropollenites Podocarpaceae Podocarpidites, Microcachrydites, Podosporites, Trisaccites Charophyta Zygnematophyceae Zygnematales Zygnemataceae Ovoidites Cholorophyta Trebouxiophyceae Botryococcaceae Botryococcus...
FIGURES | View All (4)
Journal Article
Published: 01 April 2006
Journal of Micropalaeontology (2006) 25 (1): 23-33.
... to the southeast of the basin. Zygnemataceae Palaeocystodinium lidiae (Gorka, 1963) Davey, 1969b (Pl. 1, fig. 10) Senegalinium bicavatum Jain & Millepied, 1973 (Pl. 4, figs 8, 9) Spiniferites granulatus (Davey) Lentin & Williams, 1973 Cordosphaeridium spp. (Pl. 4, figs 1...
FIGURES | View All (7)
Journal Article
Journal: Palynology
Published: 01 June 2013
Palynology (2013) 37 (1): 62-76.
... Clorophyceae, Zygnemataceae, Prasinophyceae Zoomorphs Foraminiferal linings Planktonic foraminifera Copepod eggs Crustacean remains Translucent and opaque phytoclasts Macrophyte plant debris Fungi Hyphae Tracheids Cuticles Other structured phytoclasts Land plant debris...
FIGURES | View All (5)
Series: Geological Society, London, Special Publications
Published: 01 January 2013
DOI: 10.1144/SP376.9
EISBN: 9781862396449
... such as prasinophyceae and/or zygnemataceae (single-celled green algae with a brackish to (acidified) freshwater habitat) dominate in the spectrum with 40% (27–49%), followed by pollen with 20% (0–32%) and spores with 7% (0–18%). Resedimented palynomorphs, especially of Permian age, were common. Fungal remains and cell...
FIGURES | View All (11)
Journal Article
Journal: PALAIOS
Published: 01 June 2005
PALAIOS (2005) 20 (3): 266-279.
.... and Zygnemataceae cysts), low amounts of heterogeneous AOM, and low-to-moderate wood contents (5–16%). The TOC values are low (0.7–1.9%) and the sediments consist of pure greenish-gray to brownish clays. The >110 pollen and spore taxa (distinguished by SEM) can be grouped into: (1) 13 gymnosperm trees...
FIGURES | View All (12)
Journal Article
Published: 01 November 2003
Journal of Paleontology (2003) 77 (6): 1159-1181.
... typically freshwater palynomorphs were recorded: cenobia of Hydrodictyaceae ( Pediastrum boryanum ( Turpin, 1828b ) Meneghini 1840 and Pediastrum musterii Tell and Mataloni, 1990 ) and Scenedesmaceae ( Scenedesmus sp.), spores of Zygnemataceae ( Spirogyra spp., Debarya sp., Zygnema sp...
FIGURES | View All (15)
Journal Article
Journal: Geology
Published: 01 October 2009
Geology (2009) 37 (10): 875-878.
... of these modern algae usually contain a high relative amount of long carbon-chain fragments, maximizing at n-C 25+ (e.g., Blokker et al., 1998 ). Algaenans are so far unknown from vegetative cells of modern Zygnemataceae and other categories of filamentous green algae ( De Leeuw et al., 2006 ). Vegetative cell...
FIGURES
Journal Article
Journal: Geology
Published: 01 October 2009
Geology (2009) 37 (10): 955-958.
... , p . 510 – 523 , doi: 10.1306/110601720510 . van Geel B. Grenfell H.R. 1996 , Spores of Zygnemataceae , in Jansonius J...
FIGURES
Journal Article
Journal: Palynology
Published: 01 January 2009
Palynology (2009) 33 (1): 101-112.
.... The majority of enigmatic palynomorphs, which are not clearly attributed to miospores or extant protistan groups such as specific algal groups (e.g. prasinophycea, zygnematacea), are usually assigned to the Group Acritarcha. Acritarchs are defined as palynomorphs of unknown biological affinities. Although...
FIGURES | View All (6)