Delete Search...
Stratigraphical geology and palaeontology Manual of geology
- Titel
- Stratigraphical geology and palaeontology
- Autor
- Etheridge, Robert
- Erscheinungsort
- London
- Bandzählung
- 2
- Erscheinungsdatum
- 1885
- Umfang
- XXIV, 712 S.
- Sprache
- English
- Signatur
- VII 1596 8. (2)
- Vorlage
- Universitätsbibliothek Freiberg
- Digitalisat
- Universitätsbibliothek Freiberg
- Digitalisat
- SLUB Dresden
- Lizenz-/Rechtehinweis
- Public Domain Mark 1.0
- URN
- urn:nbn:de:bsz:14-db-id5121650763
- PURL
- http://digital.slub-dresden.de/id512165076
- OAI-Identifier
- oai:de:slub-dresden:db:id-512165076
- SLUB-Katalog (PPN)
- 512165076
- Sammlungen
- Bestände der Universitätsbibliothek Freiberg
- LDP: UB Freiberg Druckschriften
- Strukturtyp
- Band
- Parlamentsperiode
- -
- Wahlperiode
- -
- Titel
- Part VI.—Jurassic Or Oolitic Period
- Digitalisat
- SLUB Dresden
- Strukturtyp
- Kapitel
- Parlamentsperiode
- -
- Wahlperiode
- -
Inhaltsverzeichnis
- Mehrbändiges WerkManual of geology
- BandStratigraphical geology and palaeontology -
- EinbandEinband -
- AbbildungGeological Map Of The British Islands -
- TitelblattTitelblatt III
- KapitelPreface V
- InhaltsverzeichnisSynopsis Of Contents VII
- RegisterTabular Summaries XIX
- RegisterList Of Plates XXIII
- KapitelIntroduction 1
- Kapitel[Part I.—Lower Palæozoic Strata] 2
- KapitelPart II.—Middle Palæozoic Strata 151
- KapitelPart III.—Upper Palæozoic Strata 212
- KapitelPart IV.—Dyas 306
- KapitelPart V.—Triassic Rocks [Mesozoic Or Secondary] 325
- KapitelPart VI.—Jurassic Or Oolitic Period 348
- KapitelPart VII.—Upper Mesozoic Strata 512
- KapitelPart VIII.—Canozoic Or Tertiary Period 598
- RegisterCorrigenda Et Errata 692
- RegisterIndex 693
- EinbandEinband -
- BandStratigraphical geology and palaeontology -
- Links
-
Downloads
- Download single page (JPG)
-
Fulltext page (XML)
356 MANUAL OF GEOLOGY. species, this large number being chiefly distributed through the follow ing genera:—Terebratula (72 species), Waldheimia (44 species), and Rhyndivnella (76 species), Spiriferina (18 species), Leptcena(6 species), Tliecidium (15 species), Discina (18 species), Crania (8 species); the remaining species are distributed through eight other genera. The two Palaeozoic forms, Spiriferina and Leptana, disappear in the Upper Lias and Inferior Oolite. Pelecypoda.—The Pelecypoda (Lamellibranchiata) are greatly re presented in the Jurassic rocks, and played an important part in the fauna of the Jurassic seas. Ninety-three genera and 1319 species range through this system. The Inferior Oolite is the richest in species, no less than 62 genera and 342 species being known in this one group of rocks. Special reference will be made to typical or illus trative genera when treating of the fauna of the geological horizons. Gasteropoda.—The Jurassic Gasteropoda number 74 genera and 988 species, the Lower Lias, Inferior Oolite, and Great Oolite being richest, numbering respectively 226, 240, and 247 species. Cephalopoda.—We must, however, regard the great group of the Cephalopoda as the most important element in the molluscan fauna through Jurassic time. The genus Ammonites alone embraces no less than 417 known species; the Belemnites, 112 ; the Nautili, 21 ; and the Teuthidoe, 5 species; 560 species of Tetrabranchiate and Dibran- chiate Mollusca belong, and are strictly confined to, the Jurassic system, no species passing to the succeeding Cretaceous series. The Crustacea, Insecta, Polyzoa, and Rhizopoda abound, and are, with the exception of the Carboniferous Rocks, peculiar to this system. Pisces.—No era possesses so large a number of Fishes as the Jurassic—62 genera and 219 species, the mass of which (106 forms) occur in the Lower Lias. The most important genera are Dapedius, Hybodus, GLchmodus, Acrodus, Lepidotus, Eugnathus, Strophodus, and Ischiodus, &c. Reptilia.—It is also through the abundance and variety of Reptilia that the Jurassic period is so significant. This age witnessed the maximum development of Reptilian types and whole orders which culminated before the close of the J urassic age. Chelonians and Lacertilians made their first appearance during this epoch, with, also, the Crocodilian genera Teleosaurus, Stenosaurus, and Goniopholis. The most remarkable (and at the same time characteristic) extinct orders of the Reptilia are the Ichthyopterygia (or Ichthyosauria), and the Sauropterygia (or Plesiosauria), the genera Ichthyosaurus and Plesiosaurus abounding in the Lias (Lower and Upper), the Ptero- sauria (Ornithosauria) through the Pterodactyles, and Megalosaurus through the Deinosauria. Thus six orders of the Reptilia are repre sented through the Lower Mesozoic rocks, viz., the Chelonia, Cro- codilia, Ichthyopterygia, Sauropterygia, 1 Ptei-osauria and Deinosauria. No less than' 31 genera and 127 species of Reptilia range through 1 See Table of the Distribution of the Plesiosaurs by the Rev. G. F. Whid- borne : Q. Jour. Geol. Soc., 1881.
- Current page (TXT)
- METS file (XML)
- IIIF manifest (JSON)
- Show double pages
- Thumbnail Preview