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The Chain of Life in Geological Time: A Sketch of the Origin and Succession of Animals and PlantsDawson, John William, Sir

Science

The Chain of Life in Geological Time: A Sketch of the Origin and Succession of Animals and Plants

Name: The Chain of Life in Geological Time: A Sketch of the Origin and Succession of Animals and Plants
Author: Dawson, John William, Sir

Dawson, John William, Sir

Paleobotany; Paleontology

_Caunopora planulata_                                          36

_Archæocyathus minganensis_. A Primordial Protozoon            37

Receptaculites. Restored                                       38

Section of _Loftusia Persica_. An Eocene Foraminifer           39

Foraminiferal Rock Builders, in the Cretaceous and Eocene      41

  _Frontispiece._ _Paradoxides Regina_ (Matthew)                     44

Group of Cambrian Animals                                      46

Portion of skeleton of Hexactinellid Sponge (_Cœloptychium_)   49

_Protospongia fenestrata_ (Salter)                             50

_Astylospongia præmorsa_ (Roemer)                              51

Spicules of Lithistid Sponge (_Trichospongia_, Billings)       51

_Oldhamia antiqua_ (Forbes)                                    52

_Dictyonema sociale._ Enlarged                                 52

_Dictyonema Websteri_ (Dn.)                                    53

Group of modern Hydroids allied to Graptolites                 54

Silurian Graptolitidæ                                          55

Central portion of Graptolite, with membrane, or float
        (_Dichograpsus octobrachiatus_, Hall)                        55

_Ptilodictya acuta_ (Hall). Bryozoan                           55

  39_a_. _Fenestella Lyelli_ (Dn.). A Carboniferous Bryozoan         56

_Chaetetes fibrosa._ A Tabulate Coral with microscopic
         cells                                                       56

_a_, _Stenopora exilis_ (Dn.). _b_, _Chaetetes tumidus_
        (Edwards and Haine)                                          57

Living Anthozoan Coral (_Astræa_)                              58

Tabulate Corals (_Halisites_ and _Favosites_)                  59

Rugose Coral (_Heliophyllum Halli_)                            59

  44_a_. _Zaphrentis prolifica_ (Billings)                           60

Rugose Corals (_Zaphrentis Minas_, Dn., and _Cyathophyllum_
       _Billingsi_, Dn.)                                             60

Modern Crinoid (_Rhizocrinus Lofotensis_)                      61

_Palæaster Niagarensis_ (Hall)                                 62

_Palæchinus ellipticus_ (McCoy)                                62

_Pleurocystites squamosus_                                     63

_Heterocrinus simplex_ (Meek)                                  63

Body of _Glyptocrinus_                                         63

_Extracrinus Briareus_                                         64

_Pentacrinus caput-medusæ_                                     64

_Lingula anatina_                                              65

Cambrian and Silurian Lingulæ                                  65

_Terebratula sacculus_ (Martin)                                66

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The Chain of Life in Geological Time: A Sketch of the Origin and Succession of Animals and Plants

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