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[Proceedings of the 5th Symposium on Mesozoic and Cenozoic Decapod Crustaceans, Krakow, Poland, 2013: A tribute to Pál Mihály Müller / R.H.B. Fraaije, M. Hyžný, J.W.M. Jagt, M. Krobicki & B.W.M. van Bakel (eds.)]: Neozanthopsis americana (Decapoda, Brachyura, Carpilioidea) from the Middle Eocene Cane River Formation of Louisiana, USA, and associated teleost otoliths
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Naturalis | |
| Schweitzer, C.E.; Feldmann, R.M.; Stringer, G.L.. |
| A large collection of Neozanthopsis americana (Rathbun, 1928) from the Middle Eocene (Lutetian) Cane River Formation in Louisiana, USA, represents the first opportunity to describe the species in detail. Detailed analysis of associated teleost otoliths and other vertebrate remains documents a palaeoenvironmental setting characterised by a soft-sediment, inner-shelf setting with normal salinity under tropical or subtropical conditions. Anatomical and morphometric analysis of 21 of the better-preserved crabs demonstrates that gender discrimination cannot be made from dorsal carapace characteristics and that the sample represents post-juvenile individuals. Exocuticle and endocuticle are preserved on some specimens and document the presence of erect... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Crabs; Paleogene; Lutetian; Bony fish; Palaeoenvironment; Taphonomy; 42.74; 38.22. |
| Ano: 2014 |
URL: http://www.repository.naturalis.nl/record/523038 |
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| Artal, P.; Bakel, B.W.M. van; Onetti, A.. |
| Marls assigned to the Coll de Malla Formation (Lutetian) in the area of Vic (Barcelona) and Sarrià de Ter (Girona) have yielded several specimens of a new brachyuran that can be assigned with confidence to the superfamily Majoidea. General carapace shape, the produced and bilobed front, with two longitudinal rounded ridges, the construction of the orbits, the gently arched posterior margin, as well as the strong conical protuberances in the dorsal regions, favour placement in the family Inachidae. The construction and distribution of the axial and branchial regions confirms assignment to the genus Planobranchia. Distinct features seen in the new material, such as the arched epibranchial ridges bounding the urogastric region, the gently arched posterior... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Spider crabs; Inachidae; Planobranchia; New taxon; Lutetian; 42.74; 38.22. |
| Ano: 2014 |
URL: http://www.repository.naturalis.nl/record/523786 |
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