GB3D Type Fossils

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Fossil specimen : SM A 521 – Lectotype

Taxonomic Group

Kingdom Animalia

  Phylum Arthropoda

    Class Trilobita

      Order Corynexochida

Fossil Name Illaenus inflatus (Salter), 1866
Type Status Lectotype
Name History

Illaenus inflatus (Salter), 1866 – See Morris, S.F. (1988): Lectotype

Illaenus inflatus (Salter), 1866 – See Lake (1942)

Symphysurus inflatus (Salter), 1866 – See Woods, H. (1891)

Psilocephalus inflatus Salter, 1866 – See Salter (1873)

Psilocephalus inflatus Salter, 1866 – See Ramsay (1866a): Syntype

Psilocephalus inflatus Salter, 1866 – See Salter, J.W. (1866): Syntype

Registration No. A 521
Collector Name not available
Donor or Associated Person Homfray, David (1822-1893)
Held By Sedgwick Museum of Earth Sciences Logo Sedgwick Museum of Earth Sciences, University of Cambridge
Country Wales
Locality Penmorfa (N.W.on Caernarvon Road), Wales
Grid Reference Not available
Rock Unit Tremadoc Group
Biozone Not available
Geological Age

Tremadoc Series (Ordovician Period) (477.7 – 485.4 Ma B.P.)

[Closest ICS interval: Tremadocian Age ]


Lake 1942. A monograph of the British Cambrian Trilobites Palaeontographical Society Monographs p.318 pl. xlv figs. 10, 12

Morris, S.F. 1988. A review of British trilobites, including a synoptic revision of Salter's monograph. Monograph of the Palaeontographical Society London. pp. 1-316 (Publication Number 574, part of volume 140 for 1986). Lectotype, p.114

Ramsay 1866 a. The geology of North Wales Memoirs of the Geological Survey of England and Wales 1st edition appendix, p.316 fig.8 a

Salter 1873. Catalogue of the Cambrian and Silurian fossils contained in the Geological Museum of the University of Cambridge p.15

Salter, J.W. 1866. Palaeontographical Society Monographs p.176 fig.41 a

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.151

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