• Thumbnail for John Gwyn Jeffreys
    John Gwyn Jeffreys FRS (18 January 1809 – 21 January 1885) was a British conchologist and malacologist. John Gwyn Jeffreys was born on 18 January 1809...
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  • Thumbnail for Henry Moseley
    Henry Gwyn Jeffreys Moseley (/ˈmoʊzli/; 23 November 1887 – 10 August 1915) was an English physicist, whose contribution to the science of physics was...
    26 KB (3,074 words) - 10:57, 30 March 2025
  • John Jeffreys may refer to: John R. F. Jeffreys (1916–1944), British mathematician and World War II codebreaker John Gwyn Jeffreys (1809–1885), British...
    790 bytes (121 words) - 05:04, 9 March 2025
  • astronomer J. G. Jeffreys (1893–1977), Australian-born educator John Gwyn Jeffreys (1809–1885), British malacologist John R. F. Jeffreys (1918–1944), British...
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  • Thumbnail for Stagnicola (gastropod)
    Stagnicola (gastropod) (category Taxa named by John Gwyn Jeffreys)
    occulta (Jackiewicz, 1959) - synonym: Stagnicola occultus (Jackiewicz, 1959) Jeffreys J. G. (1830). "A synopsis on the testaceous pneumonobranchous Mollusca...
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  • Thumbnail for Carychiinae
    Carychiinae (category Taxa named by John Gwyn Jeffreys)
    of the Eupulmonata. MolluscaBase eds. (2020). MolluscaBase. Carychiinae Jeffreys, 1830. Accessed through: World Register of Marine Species at: http://www...
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  • Thumbnail for Tritia nitida
    Tritia nitida (category Taxa named by John Gwyn Jeffreys)
    33 mm. Jeffreys, J.G. (1867) British Conchology, or an Account of the Mollusca which now Inhabit the British Isles and Surrounding Seas. Vol. 4. John Van...
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  • Thumbnail for Ganesa (gastropod)
    Ganesa (gastropod) (category Taxa named by John Gwyn Jeffreys)
    Skeneidae. Species within the genus Ganesa include: Ganesa nitidiuscula Jeffreys, 1883 Ganesa panamensis Dall, 1902 Species brought into synonymy Ganesa...
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  • Thumbnail for Carenzia carinata
    Carenzia carinata (category Taxa named by John Gwyn Jeffreys)
    Northwest Africa and the Cape Verdes. Jeffreys, 1877, Proc. Roy. Soc. vol. xxv. no. 173, p. 201 Carenzia carinata (Jeffreys, 1877). Retrieved through: World...
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  • Thumbnail for Vertigo substriata
    Vertigo substriata (category Taxa named by John Gwyn Jeffreys)
    substriata". IUCN Red List of Threatened Species. 2011. IUCN: e.T157197A5053356. Jeffreys J. G. 1833. A supplement to the "Synopsis of testaceous pneumonobranchous...
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  • Thumbnail for Vertigo angustior
    Vertigo angustior (category Taxa named by John Gwyn Jeffreys)
    2305/IUCN.UK.2012-1.RLTS.T22935A16658012.en. Retrieved 19 November 2021. Jeffreys J. G. 1830. A synopsis on the testaceous pneumonobrancheous Mollusca of...
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  • based on the collections of the Royal Botanic Gardens, Kew, England. John Gwyn Jeffreys begins publication of British Conchology, or an account of the Mollusca...
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  • Thumbnail for Cantrainea
    Cantrainea (category Taxa named by John Gwyn Jeffreys)
    PLoS ONE 10(10): e0140788. doi:10.1371/journal.pone.0140788. Cantrainea Jeffreys, 1883. Retrieved through: World Register of Marine Species on 5 September...
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  • Thumbnail for Seguenzia
    Seguenzia (category Taxa named by John Gwyn Jeffreys)
    Trichotropidae, Scalariidae, Cerithiidae, Rissoidae, Littorinidae J. Gwyn Jeffreys, Preliminary Report of the Biological Results of a Cruise in H.M.S....
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  • Thumbnail for George Brettingham Sowerby II
    British Conchology, a five volume set of books written by the lawyer John Gwyn Jeffreys (1809–1885) and which managed to combine scientific exactitude with...
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  • Coccopigya spinigera (category Taxa named by John Gwyn Jeffreys)
    2 mm. Minimum recorded depth is 613 m. Maximum recorded depth is 1550 m. Jeffreys J. G. (1883). "On the Mollusca procured during the cruise of H. M. S. Triton...
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  • Thumbnail for Haloceras carinatum
    Haloceras carinatum (category Taxa named by John Gwyn Jeffreys)
    mollusc in the family Haloceratidae. This species occurs in European waters. JEFFREYS J.G., 1883 On the Mollusca procured during the "Lightning" and "Porcupine"...
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  • Thumbnail for Amauropsis sphaeroides
    Amauropsis sphaeroides (category Taxa named by John Gwyn Jeffreys)
    depth is 3185 m. Maximum recorded depth is 4166 m. Amauropsis sphaeroides (Jeffreys, 1877). 10 January 2025. Retrieved through: World Register of Marine Species...
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  • telegraph system. A musician and philosopher. Born Corwen, Wales. John Gwyn Jeffreys conchologist (someone who studies shells). He helped pioneer deep-sea...
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  • Thumbnail for Crisilla picta
    Crisilla picta (category Taxa named by John Gwyn Jeffreys)
    sent to British malacologist John Gwyn Jeffreys, who described it as a new species under name Rissoa picta in 1867. Jeffreys's original text (the type description)...
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  • Thumbnail for Bishop Gore School
    Egypt and the Sudan Aneurin Hughes, EU diplomat Alfred Janes, artist John Gwyn Jeffreys, FRS, conchologist Daniel Jones, composer Ernest Jones, neurologist...
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  • Thumbnail for Edward Forbes
    ISSN 0260-9541. Chisholm 1911, p. 637. Mills, Eric L. (1978). "Edward Forbes, John Gwyn Jeffreys, and British dredging before the Challenger expedition". Journal of...
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  • physicist and judge Uzo Iwobi, lecturer John Gwyn Jeffreys, conchologist, malacologist Ernest Jones, psychoanalyst John Viriamu Jones, mathematician, physicist...
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  • Ascobulla fragilis (category Taxa named by John Gwyn Jeffreys)
    erroneously in a different genus. The type locality is La Spezia, Italy. Jeffreys J. G. (1856). "On the marine Testacea of the Piedmontese coast". Annals...
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  • Thumbnail for Profundisepta profundi
    Profundisepta profundi (category Taxa named by John Gwyn Jeffreys)
    Northern Atlantic Ocean along Iceland and Greenland. Profundisepta profundi (Jeffreys, 1877). Retrieved through: World Register of Marine Species on 25 January...
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  • Thumbnail for George Crawford Hyndman
    Dredging Committee (other members were George Dickie, Edward Waller and John Gwyn Jeffreys). This operated from 1857 to 1859, under grants from the British Association...
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  • Spermodea lamellata (category Taxa named by John Gwyn Jeffreys)
    Sweden Ukraine and other areas This minute snail lives in ancient woodland. Jeffreys, J. G. 1830. A synopsis on the testaceous pneumonobrancheous Mollusca of...
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  • Jardine (1800–1874) general zoology Jebb – Matthew H. P. Jebb JeffreysJohn Gwyn Jeffreys (1809–1885) Jekel – Henri Jekel (1816–1891) Jenkins – James...
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    devoted to geology and spent his adult life studying and teaching it. John Gwyn Jeffreys (1809-1885), who practiced conchology. Christopher Rice Mansel Talbot...
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  • dedicated himself to the study of natural history, especially conchology. John Gwyn Jeffreys often accompanied Barlee on dredging expeditions. Barlee was sometimes...
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