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A new family of brachyuran (Crustacea: Decapoda: Goneplacoidea) from the Eocene of Java, Indonesia Naturalis
Schweitzer, C.E.; Feldmann, R.M.; Bonadio, C..
A new family, Martinocarcinidae, must accommodate the monotypic genus Martinocarcinus Böhm, 1922. The genus displays a unique combination of dorsal, sternal and abdominal characters justifying placement in a new family. The Martinocarcinidae joins several other now extinct Eocene families that flourished at that time, supporting the long-held view that the Eocene was a time of radiation within the Brachyura.
Tipo: Article / Letter to the editor Palavras-chave: Brachyura; Crabs; Paleogene; Pacific; Cenozoic; 42.74.
Ano: 2009 URL: http://www.repository.naturalis.nl/record/301549
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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.)]: Crabs (Decapoda, Brachyura) from the lower Paleocene of Alabama, USA Naturalis
Feldmann, R.M.; Schweitzer, C.E.; Portell, R.W..
The present record of two species of brachyurous decapod crustaceans, Costacopluma grayi Feldmann & Portell, 2007 and Stevea martini sp. nov., from the lower Paleocene Pine Barren Member (Clayton Formation) in south-central Alabama, constitutes an extension of the range of the former and the sole occurrence of the latter. Previously, C. grayi was described from the middle Eocene Tallahatta Formation in Alabama. Stevea martini sp. nov. constitutes only the second species of the genus and the sole fossil occurrence known to date.
Tipo: Article / Letter to the editor Palavras-chave: Retroplumidae; Hexapodidae; Gulf Coast; Systematics; New species; 42.74; 38.22.
Ano: 2014 URL: http://www.repository.naturalis.nl/record/523785
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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 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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The Dakoticancridae (Decapoda, Brachyura) from the Late Cretaceous of North America and Mexico Naturalis
Bishop, G.A.; Feldmann, R.M.; Vega, F..
The podotrematous crab family Dakoticancridae includes four genera: Dakoticancer Rathbun, Tetracarcinus Weller, Avitelmessus Rathbun, and Seorsus Bishop, all known solely from the Late Cretaceous of North America. Lathelicocarcinus Bishop, originally referred to the family, must be reassigned. Fine details of anatomy, preserved on specimens of D. overanus Rathbun and A. grapsoideus Rathbun, permit description of genital openings and interpretation of functional morphology of appendages. Although one species, D. australis Rathbun, has been found associated with burrow structures, all were probably vagrant epifaunal animals on fine- to medium-grained siliciclastic substrata. Food was probably obtained by generalized low-level predation and scavenging....
Tipo: Article / Letter to the editor Palavras-chave: Dakoticancridae; Brachyura; Paleobiology; Paleobiogeography; Late Cretaceous; North America; Mexico; Taxonomy; Cladistics.
Ano: 1998 URL: http://www.repository.naturalis.nl/record/534324
Registros recuperados: 4
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