Fossil specimen : SM A 16671 – Lectotype
| Taxonomic Group |
Kingdom Animalia Phylum Brachiopoda Class Strophomenata Order Strophomenida |
|---|---|
| Fossil Name | Leangella (Leptestiina) derfelensis derfelensis (Jones), (1928) |
| Type Status | Lectotype |
| Name History | Leangella (Leptestiina) derfelensis derfelensis (Jones), (1928): Lectotype Leptestiina derfelensis (Jones O.T.), 1928: Holotype Leptellina derfelensis (Jones O.T.) Leptelloidea derfelensis Jones: Holotype |
| Registration No. | A 16671 |
|---|---|
| Collector | Name not available |
| Donor or Associated Person | Elles, Gertrude Lilian (1872-1960) |
| Held By |
 Sedgwick Museum of Earth Sciences, University of Cambridge
|
| Comments |
| Country | Wales |
|---|---|
| Locality | Derfel gorge, Arening, Wales |
| Grid Reference | Not available |
| Rock Unit | Dicranograptus Shale (base) |
|---|---|
| Biozone | Not available |
| Geological Age |
Caradoc Series (Ordovician Period) (449 – 458.4 Ma B.P.) [Closest ICS interval: Late Ordovician Epoch ] |
| References | Cocks, L.R.M. 1978. A review of British Lower Palaeozoic Brachiopods, including a synoptic revision of Davidson's monograph Palaeontographical Society Monographs (3): p.94 Cocks, L.R.M. 2010. Palaeontology vol. 53, part 5, pp. 1155-1200 Caradoc Strophomenoid and Plectambonitoid Brachiopods from Wales and the Welsh Borderlands fig.8 (left), plate 7, p.1183; p.1185 Jones, O.T. 1928. Memoirs of the Geological Survey of England and Wales (Palaeontology) vol. i part 5 (1): p.479 pl. xxv fig. 3 (middle specimen). Fig. 3 is said to be the holotype. Williams 1955. Philosophical Transactions of the Royal Society (B) vol. 238 (2): p.415 pl.39 fig.73 |
|---|
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