Walton-on-the-Naze Division A2 (NMS): Ypresian, United Kingdom
collected by M. Daniels 1986

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia - Theropoda - Psittacopedidae
Psittacomimus eos n. gen., n. sp. Mayr and Kitchener 2022
Mayr and Kitchener 2022
NMS.Z.2021.40.38 - holotype
Reptilia - Theropoda - Threskiornithidae
Rhynchaeites sp. Wittich 1898
Mayr and Kitchener 2023 3 specimens
Rhynchaeites litoralis n. sp. Mayr and Kitchener 2023
Mayr and Kitchener 2023 1 specimen
Reptilia - Theropoda
Danielsavis nazensis n. gen., n. sp. Houde et al. 2023
Houde et al. 2023
NMS.Z.2021.40.1 - holotype
Reptilia - Theropoda - Trogonidae
Eotrogon stenorhynchus n. gen., n. sp. Mayr et al. 2023
Mayr et al. 2023
NMS.Z.2021.40.83 - holotype
Reptilia - Theropoda - Masillaraptoridae
Danielsraptor phorusrhacoides n. gen., n. sp. Mayr and Kitchener 2022
1 individual
NMS.Z.2021.40.12, holotype
Reptilia - Theropoda - Morsoravidae
Sororavis solitarius n. gen., n. sp. Mayr and Kitchener 2023
Mayr and Kitchener 2023
NMS.Z.2021.40.75 - holotype
see common names

Geography
Country:United Kingdom State/province:England County:Essex
Coordinates: 51.9° North, 1.3° East (view map)
Paleocoordinates:47.3° North, 1.2° West
Basis of coordinate:based on nearby landmark
Time
Period:Paleogene Epoch:Eocene
Stage:Ypresian 10 m.y. bin:Cenozoic 2
Key time interval:Ypresian
Age range of interval:56.00000 - 47.80000 m.y. ago
Stratigraphy
Formation:London Clay Member:Walton
Stratigraphy comments: Walton Member of the London Clay Formation (previously Division A2); said to be "lower Ypresian"
Lithology and environment
Primary lithology: not reported
Includes fossils?Y
Environment:marine indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Associated major elements:all
Collection methods and comments
Collection methods:survey of museum collection
Reason for describing collection:taxonomic analysis
Collectors:M. Daniels Collection dates:1986
Collection method comments: National Museums Scotland, Edinburgh
Metadata
Database number:227361
Authorizer:M. Uhen, P. Mannion, E. Dunne Enterer:M. Uhen, K. Eckardt, P. Mannion
Modifier:P. Mannion Research group:vertebrate
Created:2022-10-07 16:18:08 Last modified:2023-08-01 07:37:51
Access level:the public Released:2022-10-07 16:18:08
Creative Commons license:CC BY
Reference information

Primary reference:
82803. G. Mayr and A. C. Kitchener. 2022. New fossils from the London Clay show that the Eocene Masillaraptoridae are stem group representatives of falcons (Aves, Falconiformes). Journal of Vertebrate Paleontology e2083515 [M. Uhen/M. Uhen]

Secondary references:

85501 P. Houde, M. Dickson, and D. Camarena. 2023. Basal Anseriformes from the Early Paleogene of North America and Europe. Diversity 15:233 [P. Mannion/P. Mannion]
85894 G. Mayr, V. L. de Pietri, and A. C. Kitchener. 2023. Narrow-beaked trogons from the early Eocene London Clay of Walton-on-the-Naze (Essex, UK). Journal of Ornithology 164:749-764 [E. Dunne/K. Eckardt]
86622 G. Mayr and A.C. Kitchener. 2022. Psittacopedids and zygodactylids: The diverse and species-rich psittacopasserine birds from the early Eocene London Clay of Walton-on-the-Naze (Essex, UK). Historical Biology 35(12):2372-2395 [E. Dunne/K. Eckardt]
87639 G. Mayr and A. C. Kitchener. 2023. Multiple skeletons of Rhynchaeites from the London Clay reveal the osteology of early Eocene ibises (Aves, Threskiornithidae). PalZ 97:425-442 [M. Uhen/M. Uhen]
86478 G. Mayr and A.C. Kitchener. 2023. A new fossil from the London Clay documents the convergent origin of a “mousebird-like” tarsometatarsus in an early Eocene near-passerine bird. Acta Palaeontologica Polonica 68(1):1-11 [E. Dunne/K. Eckardt]