Skip to main content

Main menu

  • Home
    • Journal home
    • Lyell Collection home
    • Geological Society home
  • Content
    • Accepted manuscripts
    • Issue in progress
    • All issues
    • All collections
    • Thematic Collections
    • Supplementary publications
    • Open Access
  • Subscribe
    • GSL fellows
    • Institutions
    • Corporate
    • Other member types
  • Info
    • Authors
    • Librarians
    • Readers
    • GSL Fellows access
    • Other member types access
    • Press office
    • Accessibility
    • Help
    • Metrics
  • Alert sign up
    • eTOC alerts
    • Online First alerts
    • RSS feeds
    • Newsletters
    • GSL blog
  • Submit
  • Geological Society of London Publications
    • Engineering Geology Special Publications
    • Geochemistry: Exploration, Environment, Analysis
    • Journal of Micropalaeontology
    • Journal of the Geological Society
    • Lyell Collection home
    • Memoirs
    • Petroleum Geology Conference Series
    • Petroleum Geoscience
    • Proceedings of the Yorkshire Geological Society
    • Quarterly Journal of Engineering Geology and Hydrogeology
    • Quarterly Journal of the Geological Society
    • Scottish Journal of Geology
    • Special Publications
    • Transactions of the Edinburgh Geological Society
    • Transactions of the Geological Society of Glasgow
    • Transactions of the Geological Society of London

User menu

  • My alerts
  • Log in
  • My Cart

Search

  • Advanced search
Proceedings of the Yorkshire Geological Society
  • Geological Society of London Publications
    • Engineering Geology Special Publications
    • Geochemistry: Exploration, Environment, Analysis
    • Journal of Micropalaeontology
    • Journal of the Geological Society
    • Lyell Collection home
    • Memoirs
    • Petroleum Geology Conference Series
    • Petroleum Geoscience
    • Proceedings of the Yorkshire Geological Society
    • Quarterly Journal of Engineering Geology and Hydrogeology
    • Quarterly Journal of the Geological Society
    • Scottish Journal of Geology
    • Special Publications
    • Transactions of the Edinburgh Geological Society
    • Transactions of the Geological Society of Glasgow
    • Transactions of the Geological Society of London
  • My alerts
  • Log in
  • My Cart
  • Follow gsl on Twitter
  • Visit gsl on Facebook
  • Visit gsl on Youtube
  • Visit gsl on Linkedin
Proceedings of the Yorkshire Geological Society

Advanced search

  • Home
    • Journal home
    • Lyell Collection home
    • Geological Society home
  • Content
    • Accepted manuscripts
    • Issue in progress
    • All issues
    • All collections
    • Thematic Collections
    • Supplementary publications
    • Open Access
  • Subscribe
    • GSL fellows
    • Institutions
    • Corporate
    • Other member types
  • Info
    • Authors
    • Librarians
    • Readers
    • GSL Fellows access
    • Other member types access
    • Press office
    • Accessibility
    • Help
    • Metrics
  • Alert sign up
    • eTOC alerts
    • Online First alerts
    • RSS feeds
    • Newsletters
    • GSL blog
  • Submit

In-situ Aptychus in Cleviceras from the Mulgrave Shale Member of the Whitby Mudstone Formation (Jurassic) of Port Mulgrave, Whitby

View ORCID ProfileRichard Maddra
Proceedings of the Yorkshire Geological Society, 64, pygs2019-001, 21 April 2022, https://doi.org/10.1144/pygs2019-001
Richard Maddra
14, Parkside Avenue, Queensbury, Bradford BD13 2HQ, UK
Roles: [Writing – original draft (Lead)]
  • Find this author on Google Scholar
  • Search for this author on this site
  • ORCID record for Richard Maddra
  • For correspondence: [email protected]
PreviousNext
  • Article
  • Figures & Data
  • Info & Metrics
  • PDF
Loading

Abstract

A specimen of the ammonoid Cleviceras (Hildoceratidae), collected at Port Mulgrave, near Whitby, North Yorkshire, shows an in-situ aptychus in the body chamber. The precise stratigraphic origin of the specimen is unknown, but the lithology and generic identity are compatible with derivation from the Mulgrave Shale Member of the Whitby Mudstone Formation. The specimen is the first in-situ jaw apparatus to be reported for this genus from Britain. A second loose specimen, a Harpoceras sp. with in-situ aptychus was found and photographed at Deepgrove Wyke, but was too friable to be collected. Both specimens reinforce previous observations that the aptychus form type Cornaptychus is characteristic of the ammonite family Hildoceratidae.

  • © 2022 The Author(s). Published by The Geological Society of London for the Yorkshire Geological Society. All rights reserved
View Full Text

Please note that if you are logged into the Lyell Collection and attempt to access content that is outside of your subscription entitlement you will be presented with a new login screen. You have the option to pay to view this content if you choose. Please see the relevant links below for further assistance.

INDIVIDUALS

Log in using your username and password

– GSL fellows: log in with your Lyell username and password. (Please check your access entitlements at https://www.geolsoc.org.uk/fellowsaccess)
– Other users: log in with the username and password you created when you registered. Help for other users is at https://www.geolsoc.org.uk/lyellcollection_faqs
Forgot your username or password?

Purchase access

You may purchase access to this article for 24 hours and download the PDF within the access period. This will require you to create an account if you don't already have one. To download the PDF, click the 'Purchased Content' link in the receipt email.

LIBRARY USERS

Log in through your institution

You may be able to gain access using your login credentials for your institution. Contact your library if you do not have a username and password.
If your organization uses OpenAthens, you can log in using your OpenAthens username and password. To check if your institution is supported, please see this list. Contact your library for more details.
If you think you should have access, please contact your librarian or email [email protected]

LIBRARIANS

Administer your subscription.

CONTACT US

If you have any questions about the Lyell Collection publications website, please see the access help page or contact [email protected]

PreviousNext
Back to top

In this issue

Proceedings of the Yorkshire Geological 				Society: 64 (1)
Proceedings of the Yorkshire Geological Society
Volume 64, Issue 1
May 2022
  • Table of Contents
  • About the Cover
  • Index by author
Alerts
Sign In to Email Alerts with your Email Address
Citation tools

In-situ Aptychus in Cleviceras from the Mulgrave Shale Member of the Whitby Mudstone Formation (Jurassic) of Port Mulgrave, Whitby

Richard Maddra
Proceedings of the Yorkshire Geological Society, 64, pygs2019-001, 21 April 2022, https://doi.org/10.1144/pygs2019-001
Richard Maddra
14, Parkside Avenue, Queensbury, Bradford BD13 2HQ, UK
Roles: [Writing – original draft (Lead)]
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
  • ORCID record for Richard Maddra
  • For correspondence: [email protected]

Citation Manager Formats

  • BibTeX
  • Bookends
  • EasyBib
  • EndNote (tagged)
  • EndNote 8 (xml)
  • Medlars
  • Mendeley
  • Papers
  • RefWorks Tagged
  • Ref Manager
  • RIS
  • Zotero
Permissions
View PDF
Share

In-situ Aptychus in Cleviceras from the Mulgrave Shale Member of the Whitby Mudstone Formation (Jurassic) of Port Mulgrave, Whitby

Richard Maddra
Proceedings of the Yorkshire Geological Society, 64, pygs2019-001, 21 April 2022, https://doi.org/10.1144/pygs2019-001
del.icio.us logo Digg logo Reddit logo Twitter logo CiteULike logo Facebook logo Google logo Mendeley logo
Email to

Thank you for sharing this Proceedings of the Yorkshire Geological Society article.

NOTE: We request your email address only to inform the recipient that it was you who recommended this article, and that it is not junk mail. We do not retain these email addresses.

Enter multiple addresses on separate lines or separate them with commas.
In-situ Aptychus in Cleviceras from the Mulgrave Shale Member of the Whitby Mudstone Formation (Jurassic) of Port Mulgrave, Whitby
(Your Name) has forwarded a page to you from Proceedings of the Yorkshire Geological Society
(Your Name) thought you would be interested in this article in Proceedings of the Yorkshire Geological Society.
CAPTCHA
This question is for testing whether or not you are a human visitor and to prevent automated spam submissions.
Print
Download PPT
Bookmark this article
  • Tweet Widget
  • Facebook Like
  • Google Plus One
  • Article
    • Abstract
    • Location and geological setting
    • Description
    • Discussion
    • Conclusions
    • Acknowledgements
    • Competing interests
    • Funding
    • Author contributions
    • Data availability
    • References
  • Figures & Data
  • Info & Metrics
  • PDF

Related Articles

Similar Articles

Cited By...

More in this TOC Section

  • The debate concerning the origin of the Whin Sill of NE England during the early and mid-nineteenth century
  • A bored cup of the Mississippian crinoid Synbathocrinus Phillips
Show more: Research article
  • Most read
  • Most cited
Loading
  • Cretaceous Oceanic Anoxic Event 2 in eastern England: further palynological and geochemical data from Melton Ross
  • On the Application of Peat and its Products, to Manufacturing, Agricultural, and Sanitary Purposes
  • On the Effects of Aqueous Vapour in the Atmosphere, as applied to Blast Furnaces, in the Manufacture of Pig Iron”
  • On the Geological and Archæological Contents of the Victoria and Dowkerbottom Caves in Craven
  • On Improvements in the Galvanometer, and on the Comparative Economy of various Voltaic Arrangements
More...

Proceedings of the Yorkshire Geological Society

  • About the journal
  • Editorial Board
  • Submit a manuscript
  • Author information
  • Supplementary Publications
  • Subscribe
  • Pay per view
  • Alerts & RSS
  • Copyright & Permissions
  • Activate Online Subscription
  • Feedback
  • Help

Lyell Collection

  • About the Lyell Collection
  • Lyell Collection homepage
  • Collections
  • Open Access Collection
  • Open Access Policy
  • Lyell Collection access help
  • Recommend to your Library
  • Lyell Collection Sponsors
  • MARC records
  • Digital preservation
  • Developing countries
  • Geofacets
  • Manage your account
  • Cookies

The Geological Society

  • About the Society
  • Join the Society
  • Benefits for Members
  • Online Bookshop
  • Publishing policies
  • Awards, Grants & Bursaries
  • Education & Careers
  • Events
  • Geoscientist Online
  • Library & Information Services
  • Policy & Media
  • Society blog
  • Contact the Society

 

Yorkshire Geological Society logo

Published by The Geological Society of London, registered charity number 210161

Print ISSN 
0044-0604
Online ISSN 
2041-4811

Copyright © 2022 Yorkshire Geological Society