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| Schweitzer, Carrie E.; Feldmann, Rodney M.. |
| New fossils referable to the Cancridae Latreille, 1802 extend the known stratigraphic range of the family into the middle Eocene and the geographic range into South America. Each genus within the family has been reevaluated within the context of the new material. A suite of diagnostic characters for each cancrid genus makes it possible to assign both extant and fossil specimens to genera and the two cancrid subfamilies, the Cancrinae Latreille, 1802, and Lobocarcininae Beurlen, 1930, based solely upon dorsal carapace morphology. Cheliped morphology is useful in assigning genera to the family but is significantly less useful at the subfamily and generic level. Each of the four subgenera sensu Nations (1975), Cancer Linnaeus, 1758, Glebocarcinus Nations,... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Decapoda; Brachyura; Cancridae; Tertiary; Paleobiogeography; Tethys. |
| Ano: 2000 |
URL: http://www.repository.naturalis.nl/record/534380 |
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| Feldmann, Rodney M.. |
| Decapods are the most diverse and complex group of crustaceans, adapted for life in all parts of the marine environment, many aquatic habitats, and some terrestrial niches. With this diversity of life styles, a vast range of morphotypes of decapods has evolved, exploiting almost every imaginable variation in morphology of the complex exoskeleton that characterizes them. Many of the morphological variants are a response to exploiting a particular niche in which the organisms live or an adaptation to particular behavioral characteristics. Assessing the significance of morphological variation in the fossil record is challenging because of the taphonomic overprint that results in loss of soft tissue, preservation of partial remains of hard parts, and vastly... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Crustacea; Decapoda; Mesozoic; Cenozoic; Behavior. |
| Ano: 2003 |
URL: http://www.repository.naturalis.nl/record/534405 |
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