Presentation on theme: "Figure 9.1 Protist positions on the tree of life. In this tree, developed by Patrick Keeling, University of British Columbia, the protozoans (foraminiferans."— Presentation transcript:
1Figure 9.1Protist positions on the tree of life. In this tree, developed by Patrick Keeling, University of British Columbia, the protozoans (foraminiferans and radiolarians) lie within the Cercozoa far divorced from the chromists (diatoms and dinoflagellates) within the Chromalveolates. (From Keeling et al )
2Figure 9.2Stratigraphic ranges of the main protist groups. (From Armstrong & Brasier 2005.)
3Figure 9.3Main types of foraminiferan test walls: (a) the composition and structure of test walls and (b) lamellar construction.
4Figure 9.4Main types of foraminiferan chamber construction.
5Figure 9.5Some genera of foraminiferans: (a) Textularia, (b) Cribrostomoides, (c) Milionella, (d) Sprirolina, (e) Brizalina, (f) Pyrgo, (g) Elphidium, (h) Nonion, (i) Cibicides, (j) Globigerina, (k) Globorotalia, and (l) Elphidium (another species). Magnification ×50–100 for all. (Courtesy of John Murray (b, d, e, g, h, j, k) and Euan Clarkson (a, c, f, i, l).)
6Figure 9.6Modeling foraminiferan tests: part of a theoretical three-dimensional morphospace for foraminiferans. GF, growth factor; TF, translation factor; , deviation factor. (From Tyszka 2006.)
7Figure 9.7Foram test and environments: distribution of test types and genera of Foraminifera against environmental gradients. (From Armstrong & Brasier 2005.)
8Figure 9.8Stratigraphic ranges of the main foraminiferan groups. (Based on various sources.)
9Figure 9.9Descriptive morphology of the radiolarians.
14Figure 9.14Acritarch and invertebrate diversity through Ordovician Period. (Courtesy of Thomas Servais.)
15Figure 9.15Descriptive morphology of (a) a dinoflagellate, and (b) a dinoflagellate theca (left), unpeeled (middle) to reveal the corresponding cyst (right).
16Figure 9.16A prasinophyte (a) and some dinoflagellate taxa (b–h): (a) Tasmanites (Jurassic), (b) Cribroperidinium (Cretaceous), (c) Spiniferites (Cretaceous), (d) Deflandrea (Eocene), (e) Wetzeliella (Eocene), (f) Lejeunecysta (Eocene), (g) Homotryblium (Eocene), and (h) Muderongia (Cretaceous). Magnification ×250 (a, d, e), ×425 (b, c, f, g, h). (Courtesy of Jim Smith.)
17Figure 9.17Morphology of some tintinnids in cross-section from limestones (×100–200).
18Figure 9.18Some coccolith morphotypes: (a) coccospheres of the living Emiliana huxleyi, currently the most common coccolithophore (×6500), and (b) Late Jurassic coccolith limestone (×2000). (c) Coccolith plate styles: 1 and 2, Coccolithus pelagus; 4 and 5, Oolithus fragilis; 5 and 6, Helicosphera carteri. In C. pelagus and H. carteri growth was upwards and outwards with the addition of layer upon layer of calcite; in O. fragilis growth was different with curved elements, in non-parallel to crystal cleavage directions. (a, b, courtesy of Jeremy Young; c, courtesy of Karen Henriksen.)
19Figure 9.19Descriptive morphology of the diatoms.
21Figure 9.21Descriptive morphology of the chitinozoans: (a) Operculatifera (simplexoperculate), Lagenochitina, and (b) Prosomatifera (complexoperculate), Ancyrochitina.
22Figure 9.22Chitinozoan apparatus: a large cluster of Desmochitina nodus interpreted as an egg clutch of the chitinozoan animal; the opercula are not present suggesting that the animals had already hatched (×70). (Courtesy of Florentin Paris.)