Vote for your favorite mineral in #MinCup25! - Zunyite vs. Molybdenite
It's the visually-unmistakable #zunyite vs the physically funky #molybdenite.
Log InRegister
Quick Links : The Mindat ManualThe Rock H. Currier Digital LibraryMindat Newsletter [Free Download]
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat ArticlesThe ElementsThe Rock H. Currier Digital LibraryGeologic Time
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsUsersMineral MuseumsClubs & OrganizationsMineral Shows & EventsThe Mindat DirectoryDevice SettingsThe Mineral Quiz
Photo SearchPhoto GalleriesSearch by ColorNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryPhotography

Swinnerton, H.H. (1959) Concerning Mr. A. Hallams' Article on Gryphaea. Geological Magazine, 96 (4) 307-310 doi:10.1017/s0016756800060775

Advanced
   -   Only viewable:
Reference TypeJournal (article/letter/editorial)
TitleConcerning Mr. A. Hallams' Article on Gryphaea
JournalGeological Magazine
AuthorsSwinnerton, H.H.Author
Year1959 (August)Volume96
Issue4
PublisherCambridge University Press (CUP)
DOIdoi:10.1017/s0016756800060775
Generate Citation Formats
Mindat Ref. ID248884Long-form Identifiermindat:1:5:248884:8
GUID0
Full ReferenceSwinnerton, H.H. (1959) Concerning Mr. A. Hallams' Article on Gryphaea. Geological Magazine, 96 (4) 307-310 doi:10.1017/s0016756800060775
Plain TextSwinnerton, H.H. (1959) Concerning Mr. A. Hallams' Article on Gryphaea. Geological Magazine, 96 (4) 307-310 doi:10.1017/s0016756800060775
In(1959, August) Geological Magazine Vol. 96 (4) Cambridge University Press (CUP)
Abstract/NotesAbstractThe basis for Mr. Hallam' rejection of the hypothesis on the evolution of Liostrea into Gryphaea is briefly examined and is shown to be inadequate. For Liostrea real evidence is lacking. For Gryphaea the evidence, though copious, is unsound for it is based upon an improper treatement of his collections. Moreover, the features he measures are not sufficiently significant and the reader is left in considerable doubt as to the actual range of his measurements. His aspersion upon previous workers in this field is entirely unjustified.


See Also

These are possibly similar items as determined by title/reference text matching only.

 
and/or  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2025, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph.
To cite: Ralph, J., Von Bargen, D., Martynov, P., Zhang, J., Que, X., Prabhu, A., Morrison, S. M., Li, W., Chen, W., & Ma, X. (2025). Mindat.org: The open access mineralogy database to accelerate data-intensive geoscience research. American Mineralogist, 110(6), 833–844. doi:10.2138/am-2024-9486.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: September 12, 2025 00:18:13
Go to top of page