GB3D Type Fossils

Fossil specimen : SM J 3294 – Holotype

Taxonomic Group

Kingdom Animalia

  Phylum Mollusca

    Class Cephalopoda

      Order Ammonitida

Fossil Name Longaeviceras placenta (Simpson-Leckenby)
Type Status Holotype
Name History

Longaeviceras placenta (Simpson-Leckenby) – See Buckman, S.S. (1920): Holotype

Quenstedtoceras placenta (Simpson-Leckenby) – See Buckman (1913)

Ammonites placenta (Simpson ms.) – See Leckenby (1859)

Registration No. J 3294
Collector Name not available
Donor or Associated Person Leckenby, John (1814-1877)
Held By Sedgwick Museum of Earth Sciences Logo Sedgwick Museum of Earth Sciences, University of Cambridge
Country England
Locality Castle Rock, Scarborough, Yorkshire, England
Grid Reference Not available
Rock Unit Kellaways Rock
Biozone duncani
Geological Age

Callovian Age (Jurassic Period) (163.5 – 166.1 Ma B.P.)


Buckman 1913. Quarterly Journal of the Geological Society of London vol. lxix pp.154, 165

Buckman, S.S. 1920. Yorkshire type ammonites vol. iii part xxi no.148 pl. cxlviii figs.1-2

Leckenby 1859. Quarterly Journal of the Geological Society of London vol. xv p.10 pl. ii fig.1

Woods, H. 1891. Catalogue of the Type Fossils in the Woodwardian Museum, Cambridge. Henry Woods with preface by T. McKenny Hughes CUP. 180+xiv SPL: II. 16 p.123

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