| Albian | Designating the uppermost stage of the Lower Cretaceous (esp. in Europe), above the… | 1846 | Go To Quotation |
| allomorph | Each of a number of distinct crystalline forms having the same chemical composition. | 1866 | Go To Quotation |
| allomorphic | Of the nature of an allomorph (allomorph n.); displaying allomorphism. | 1866 | Go To Quotation |
| allotriomorph | An allotriomorphic (xenomorphic) substance or crystal. | 1914 | Go To Quotation |
| alvite | A reddish-brown amorphous mineral found in pegmatites which is an altered or metamict… | 1855 | Go To Quotation |
| amphibolitization | The alteration of a rock to form amphibolite, or one more nearly resembling amphibolite in composition. | 1918 | Go To Quotation |
| Ampthill | (a bed of) clay, similar to Oxford clay, deposited during the Oxfordian stage of the… | 1877 | Go To Quotation |
| artiodactyl | Belonging to or characteristic of the mammalian order Artiodactyla, which comprises… | 1848 | Go To Quotation |
| Aurignacian | Of or pertaining to the Aurignac cave of the Pyrenees; belonging to the Aurignac era… | 1914 | Go To Quotation |
| autotype | trans. To reproduce by the autotype process. | 1861 | Go To Quotation |
| Barton | The name of a district near Lymington, Hampshire, applied attrib. to deposits of a division of the Eocene period in Britain. | 1847 | Go To Quotation |
| Beer stone | A kind of limestone used in building, obtained from Beer Head in Devonshire, England. | 1871 | Go To Quotation |
| blastoid | Of or belonging to the Blastoidea, a group of fossil echinoderms. | 1876 | Go To Quotation |
| Bradford | (see quots.). | 1858 | Go To Quotation |
| brecciation | The fragmentation of a rock; also, a brecciated condition. | 1873 | Go To Quotation |
| Callovian | Epithet of a stage of the Jurassic between the Oxfordian in the Upper Jurassic and the… | 1881 | Go To Quotation |
| Coblenzian | Of, pertaining to, or designating the uppermost division of the Lower Devonian (Lower… | 1853 | Go To Quotation |
| Cromerian | Epithet of the Cromer Forest Bed series (see Cromer n.); hence, of, pertaining to, or characteristic of this series. | 1900 | Go To Quotation |
| Dalradian | Epithet of a series of metamorphosed sedimentary and volcanic rocks found in a… | 1891 | Go To Quotation |
| Danian | Epithet of a stratigraphical stage or series (not represented in Britain) lying below… | 1873 | Go To Quotation |
| Eifel | Used attrib. to designate a subdivision of Middle Devonian in the Eifel region, and the rocks. | 1853 | Go To Quotation |
| eusuchian | Belonging to or characteristic of this sub-order. | 1875 | Go To Quotation |
| foraminiferan | Of, relating to, or composed of organisms of the phylum Foraminifera. Cf. foraminiferan ooze at ooze n. 2a. | 1864 | Go To Quotation |
| fore-shock | A lesser shock preceding the principal shock of an earthquake. | 1902 | Go To Quotation |
| Gedinnian | Pertaining to or designating the lowest division of the Devonian system in Europe, or the… | 1853 | Go To Quotation |
| glauconiferous | = glauconitic adj. | 1852 | Go To Quotation |
| hemera | A period of geological time in which any particular species was most abundant as… | 1893 | Go To Quotation |
| Holocene | Of, pertaining to, or designating the most recent geological epoch, which… | 1897 | Go To Quotation |
| homœomorph | Palaeontol. One of two or more homœomorphous fossils or fossil species. | 1898 | Go To Quotation |
| homœomorphy | A superficial resemblance between two fossils or two fossil species sufficient to… | 1895 | Go To Quotation |
| horst | A block of the earth's surface which has been raised relative to the surrounding land… | 1893 | Go To Quotation |
| Hoxnian | Epithet of the second (penultimate) interglacial in Britain (identified with… | 1956 | Go To Quotation |
| hystrichosphere | Any of numerous kinds of microscopic planktonic fossil organisms characterized by a… | 1957 | Go To Quotation |
| ichno- | In Palaeontol. used with reference to trace fossils, esp. in terms relating to their… | 1956 | Go To Quotation |
| inselberg | An isolated hill or mountain which rises abruptly from its surroundings, typically a plain in a hot, dry region. | 1907 | Go To Quotation |
| isblink | = ice blink n. 1. | 1870 | Go To Quotation |
| kanat | A gently sloping underground channel or tunnel, usu. spec. (in Iran) leading water… | 1855 | Go To Quotation |
| kentallenite | An olivine-bearing monzonite. | 1900 | Go To Quotation |
| kenyte | A light red to pale brown rock consisting of olivine-bearing phonolitic trachyte. | 1900 | Go To Quotation |
| Kimmeridgian | Also Kimeridgian. The specific epithet of that subdivision of the Upper Oolite which… | 1851 | Go To Quotation |
| Landenian | Of, pertaining to, or designating a stratigraphic stage at the top of the Palæocene series… | 1852 | Go To Quotation |
| Laxfordian | Of, pertaining to, or designating the later metamorphism undergone by the Lewisian rocks… | 1950 | Go To Quotation |
| Lewisian | Of, pertaining to, or characteristic of Lewis: applied to the earlier of the two main… | 1859 | Go To Quotation |
| Lincolnshire | a bed of oolitic limestone of Upper Jurassic (Bajocian) age, extensively developed in Lincolnshire and adjoining counties. | 1873 | Go To Quotation |
| lit-par-lit | Designating the intrusion of innumerable narrow, more or less parallel, sheets or tongues… | 1896 | Go To Quotation |
| Loxodon | ‘A sub-genus of elephants, so called from the rhomb-shaped discs of the worn molars’ (Ogilvie, 1882). | 1857 | Go To Quotation |
| magmatism | The theory advocated by magmatists. rare. | 1948 | Go To Quotation |
| maldonite | A native alloy of gold and bismuth, Au 2 Bi, crystallizing in the cubic system… | 1869 | Go To Quotation |
| Malvernian | Of, relating to, or characteristic of the Malvern Hills; spec. (a) designating a… | 1879 | Go To Quotation |
| megalosauroid | = megalosaurian adj. | 1869 | Go To Quotation |
| mesosuchian | Belonging to, characteristic of, or designating the suborder Mesosuchia of… | 1875 | Go To Quotation |
| miarolitic | Of an igneous rock or its structure: characterized by irregular cavities into… | 1889 | Go To Quotation |
| modiolid | A modiolid bivalve mollusc. | 1954 | Go To Quotation |
| Moine | the Moine n. (in full the Moine Series) an intensely folded series of metamorphic… | 1888 | Go To Quotation |
| mosasaurian | = mosasauroid adj. | 1849 | Go To Quotation |
| mosasauroid | Resembling or of the nature of a mosasaur; of or relating to the group which includes the mosasaurs. | 1849 | Go To Quotation |
| moutonnée | Designating or resembling a bare rock outcrop or rocky hillock that has the surface or form… | 1846 | Go To Quotation |
| neotectonic | Of or relating to neotectonics. | 1961 | Go To Quotation |
| Neozoic | Of, relating to, or designating an era following the Palaeozoic era, comprising both the Mesozoic and Cenozoic (Cainozoic) eras. | 1854 | Go To Quotation |
| nothosaurian | Of, designating, or resembling a nothosaur. | 1882 | Go To Quotation |
| nunatak | An isolated peak of rock projecting above the surface of inland ice. Cf. pingo n., rognon n. 2. | 1877 | Go To Quotation |
| Oamaru | attrib. Designating a division of Tertiary rock formations found in the region… | 1865 | Go To Quotation |
| olenellid | Of or relating to the family Olenellidae of primitive Lower Cambrian trilobites. | 1892 | Go To Quotation |
| ophicalcite | A form of marble consisting of a mixture of serpentine and calcite; a particular variety of this. | 1866 | Go To Quotation |
| ophitically | With an ophitic texture. | 1908 | Go To Quotation |
| orbitoidal | Of limestone: containing shells of foraminiferans, esp. orbitoids. Also… | 1848 | Go To Quotation |
| orbitolite | A fossil foraminiferan of the genus Orbitolites, having a discoid shell. | 1849 | Go To Quotation |
| ornithoscelidan | An extinct reptile of the former order Ornithoscelida (T. H. Huxley's term for… | 1870 | Go To Quotation |
| palaeobiology | The branch of science that deals with the biology of extinct and fossil plants and animals. | 1893 | Go To Quotation |
| palaeogeography | The geographical features of an area at some time in the past; the branch of science that deals with such features. | 1881 | Go To Quotation |
| palaeometeorological | Of or relating to palaeometeorology. | 1901 | Go To Quotation |
| palaeometeorologist | An expert in or student of palaeometeorology. | 1901 | Go To Quotation |
| palaeophytological | Of or relating to palaeophytology; palaeobotanical. | 1885 | Go To Quotation |
| palaeotherioid | = palaeotheroid n. | 1848 | Go To Quotation |
| Palaeozoic | Of, relating to, or designating the earliest of the three geological eras… | 1838 | Go To Quotation |
| palichthyologic | = palaeoichthyological adj. | 1848 | Go To Quotation |
| paridigitate | Having an even number of toes on each foot; artiodactyl. Also as n. | 1848 | Go To Quotation |
| Pebidian | Designating a thick sequence of volcanic rocks of Precambrian age with outcrops in several areas in south-western Wales. | 1877 | Go To Quotation |
| penecontemporaneity | The condition of being penecontemporaneous. | 1958 | Go To Quotation |
| penecontemporaneous | Almost contemporaneous; esp. (of a process) occurring immediately after deposition of a particular stratum. | 1901 | Go To Quotation |
| perissodactyl | Designating or belonging to the mammalian order Perissodactyla, which comprises… | 1848 | Go To Quotation |
| Permo-Carboniferous | Esp. of certain Palaeozoic formations in the Czech Republic and North America… | 1874 | Go To Quotation |
| phosphatization | The action of phosphatizing something; the fact or condition of being phosphatized. | 1875 | Go To Quotation |
| phosphatize | trans. Chiefly Geol. To convert into a phosphate or phosphates. | 1875 | Go To Quotation |
| pithecine | Of or relating to a group of apes typified by a former genus named Pithecus. Obs. rare. | 1870 | Go To Quotation |
| pleurapophysial | Relating to or of the nature of a pleurapophysis. | 1848 | Go To Quotation |
| pleurapophysis | Either of a pair of lateral processes of a vertebra, in the thoracic region forming the… | 1848 | Go To Quotation |
| pleurosteal | Of or relating to the pleurosteon. | 1870 | Go To Quotation |
| Pliensbachian | A stage of the Lower Jurassic in Europe lying above the Sinemurian and below the… | 1903 | Go To Quotation |
| plioloph | An extinct perissodactyl mammal of the genus Pliolophus. | 1857 | Go To Quotation |
| Pliolophus | A genus of extinct perissodactyl quadrupeds allied to tapirs and horses, known from remains of the Eocene epoch. | 1857 | Go To Quotation |
| polygonaceous | Belonging or relating to the family Polygonaceae, which includes docks, sorrels, and… | 1848 | Go To Quotation |
| procoelous | Designating or relating to vertebrae whose centra are concave anteriorly. Also: (of… | 1862 | Go To Quotation |
| pseudomorphose | trans. = pseudomorph v. | 1888 | Go To Quotation |
| pseudostratified | Geol. Of or exhibiting pseudostratification. | 1874 | Go To Quotation |
| pyritization | Impregnation with iron pyrites; the state of being so impregnated; esp. the replacement of… | 1889 | Go To Quotation |
| radialization | Arrangement or rearrangement in a radial or diverging pattern; an instance of this. | 1889 | Go To Quotation |
| radialized | Having a radial pattern or arrangement of parts. | 1889 | Go To Quotation |
| Rhamphorhynchus | A genus of rhamphorhynchoid pterosaurs of the Jurassic period, characterized by a… | 1847 | Go To Quotation |
| Rhenan | Of, relating to, or designating a stage of the Palaeozoic found in the Rhineland… | 1853 | Go To Quotation |
| rhyolite | Originally: a variety of trachyte, containing quartz. In later use: a typically… | 1861 | Go To Quotation |
| riegel | A low, transverse ridge of resistant bedrock on the floor of a glacial valley. | 1909 | Go To Quotation |
| rotalian | = rotaline adj. | 1860 | Go To Quotation |
| rudist | Of, relating to, or characteristic of the order Hippuritoida (or Rudistes) of… | 1845 | Go To Quotation |
| Santonian | Name of a stage in the Upper Cretaceous in France and adjacent areas, corresponding to… | 1869 | Go To Quotation |
| saurischian | Relating or pertaining to the Saurischia, a sub-order or order of dinosaurian reptiles… | 1887 | Go To Quotation |
| sauropodous | Of, pertaining to, or connected with the Sauropoda (see sauropod adj.). | 1887 | Go To Quotation |
| schillerization | A process of change in crystals, giving rise to a ‘schiller’ appearing when the crystal is turned in various directions. | 1885 | Go To Quotation |
| schillerize | trans. To subject (a crystal) to the change known as schillerization. | 1890 | Go To Quotation |
| schistify | trans. To develop a schistose structure in, to change into schist. | 1890 | Go To Quotation |
| Scourian | Of, pertaining to, or designating the earlier metamorphism undergone by the Lewisian rocks… | 1950 | Go To Quotation |
| scyelite | A combination of mica with hornblende-picrite. | 1885 | Go To Quotation |
| Sequanian | Name of a substage of the Upper Jurassic in north-western Europe, below the Kimmeridgian… | 1851 | Go To Quotation |
| serpentinization | Conversion into serpentine. | 1885 | Go To Quotation |
| Skiddavian | = Skiddaw n. 2. Also absol. | 1905 | Go To Quotation |
| spherulitize | trans. To render spherulitic. | 1889 | Go To Quotation |
| spherulitoid | More or less spherulitic in structure. | 1889 | Go To Quotation |
| stego- | a fossil genus or subgenus of elephants, having ‘ridged’ teeth; an elephant of this genus. | 1857 | Go To Quotation |
| stratula | With pl. concord. (See quots.) | 1853 | Go To Quotation |
| subatmospheric | Geol. Taking place or existing in contact with the overlying atmosphere; subaerial. | 1858 | Go To Quotation |
| theropodous | Of or belonging to the Theropoda, an order of carnivorous dinosaurs in Marsh's classification, having feet like those of mammals. | 1889 | Go To Quotation |
| Tithonian | Designating a stage of the European Upper Jurassic, thought to correspond to the… | 1871 | Go To Quotation |
| Torridon | The name of Loch Torridon on the NW. coast of Scotland, used attrib. to designate… | 1873 | Go To Quotation |
| Tremadoc | Used attrib. to designate a series of Tremadocian rocks (see Tremadocian adj.) about… | 1847 | Go To Quotation |
| trowlesworthite | An altered granite in which fluorite, orthoclase, and tourmaline have taken the place of the original quartz, feldspar, and mica. | 1884 | Go To Quotation |
| undulose | = undulous adj. undulose extinction, extinction (sense 1c(b) (ii)) that occurs in… | 1889 | Go To Quotation |
| Urgonian | Forming or belonging to a series of massive limestones of the Lower Cretaceous system… | 1856 | Go To Quotation |
| Uriconian | Consisting of, pertaining to, a series of volcanic rocks such as constitute the Wrekin in Shropshire. | 1886 | Go To Quotation |
| vaalite | A variety of vermiculite. | 1874 | Go To Quotation |
| variolitization | The process of becoming variolitic; change or conversion into variolite. | 1890 | Go To Quotation |
| Viséan | Of, pertaining to, or designating the upper of the two divisions of the Lower Carboniferous (Dinantian) in Europe. Also absol. | 1905 | Go To Quotation |
| way-up | Orientation as regards which part is uppermost or was deposited last. | 1958 | Go To Quotation |
| Widmanstätten | Used attrib. with reference to an orderly pattern of intersecting bands seen in… | 1861 | Go To Quotation |
| young | intr. Of a structure or formation: to present the apparently younger side (in a specified direction). | 1934 | Go To Quotation |
