Uca maracoani (Crustacea, Decapoda, Ocypodidae) from a Miocene paleomangrove in Brazil: A case of evolutionary stasis among tropical American fiddler crabs

Lima, Daniel; Tavares, Marcos; Lopes, Ricardo Tadeu; Araújo, Olga Maria Oliveira de; Aguilera, Orangel

doi:10.1016/j.jsames.2020.102517

Cited by 17 publications

(8 citation statements)

References 26 publications

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“…The Pirabas Formation (Maury, 1925), which is of early Miocene, Aquitanian to early Burdigalian, N4 to N5 to middle Miocene, Langhian N8-N9 plankton foraminiferal biozones (Blow, 1969) (Aguilera et al, 2020a, b and references therein), consists of carbonate to mixed siliciclastic-carbonate deposits associated to shallow-water coastal settings (grainstone and consolidated packstone, stratified wackestone to packstone, and laminated mudstone) (Rossetti et al, 2013 and references therein). In addition, littoral facies (shoreface/foreshore), marginal lagoons, restricted platform environments (gray to olive mudstone and conglomeratic sandstone), and mangrove estuarine lagoons (dark mudstone, massive or laminated) have been recorded (Lima et al, 2020a, b). A diverse fossil fauna that is rich in microfossils (foraminifera, ostracodes) and macrofossils (mollusks, bryozoans, corals, echinoderms, decapods, fishes, cetaceans, and sirenids has been described (Aguilera et al, 2020a, b; Lima et al, 2020a, b).…”

Section: Geological Settingmentioning

confidence: 99%

“…In addition, littoral facies (shoreface/foreshore), marginal lagoons, restricted platform environments (gray to olive mudstone and conglomeratic sandstone), and mangrove estuarine lagoons (dark mudstone, massive or laminated) have been recorded (Lima et al, 2020a, b). A diverse fossil fauna that is rich in microfossils (foraminifera, ostracodes) and macrofossils (mollusks, bryozoans, corals, echinoderms, decapods, fishes, cetaceans, and sirenids has been described (Aguilera et al, 2020a, b; Lima et al, 2020a, b). The specimen of Willinachoides santanai n. gen. n. sp.…”

Section: Geological Settingmentioning

confidence: 99%

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The Inachoididae spider crabs (Crustacea, Brachyura) from the Neogene of the tropical Americas

2021

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The spider crabs Willinachoides santanai n. gen. n. sp. from the early-middle Miocene of north Brazil and Paradasygyius rodriguezi n. sp. from the late Miocene of Venezuela are described and illustrated. Additionally, Eoinachoides senni Van Straelen, 1933, from the late Oligocene–early Miocene of Venezuela, is redescribed based on photographs of the holotype, and the diagnosis of Eoinachoides latispinosus Carriol, Muizon, and Secretan, 1987, from the late Miocene of Peru, is emended also on the basis of photographs of the holotype. The past distribution points to a Tethyan background for the current amphi-American Inachoididae, with the oldest fossil species known from the early Eocene Tethyan regions (Pakistan and Italy), and from the late Eocene–late Pliocene of the Americas. The high number of monotypic genera in Inachoididae could be the result of rapid dispersion followed by diversification during the Neogene of the tropical America, facilitated by global and regional events (e.g., eustatic sea level changes, the Mi-1 Oligocene-Miocene boundary global cooling, the global warming period of the Middle Miocene Climate maximum, closure of the Panama Isthmus, and marine incursions into the Amazon Basin). The shoaling and final closure of the Central American Seaway are thought to have critically affected the evolution of the inachoidids and shaped their current distribution patterns. UUID: http://zoobank.org/6275fdc4-4bfa-4873-9320-3143d4915172.

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Section: Geological Settingmentioning

confidence: 99%

Section: Geological Settingmentioning

confidence: 99%

The Inachoididae spider crabs (Crustacea, Brachyura) from the Neogene of the tropical Americas

2021

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“…Discussion. The fossil record of fiddler crabs is sparse and fragmentary, with only half a dozen species recognized from fossilized carapaces (e.g., Artal, 2008;Domínguez Alonso, 2008;de Gibert et al, 2013;Luque et al, 2017;Luque et al, 2018;Lima et al, 2020). Aside Afruca miocenina, the only other Miocene fiddler crab known is Uca maracoani (Latreille, 1802) from Brazil (Brito, 1972;Luque et al, 2017;Luque et al, 2018;Lima et al, 2020).…”

Section: Age Justificationmentioning

confidence: 99%

Fossil calibrations for molecular analyses and divergence time estimation for true crabs (Decapoda: Brachyura)

Luque

Bracken‐Grissom

Ortega‐Hernández

et al. 2023

Preprint

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True crabs, or Brachyura, comprise over 7,300 known species and are among the most ecologically dominant, economically significant, and popularly recognized group of extant crustaceans. There are over 3,000 fossil brachyuran species known from mid and upper Jurassic, Cretaceous, and Cenozoic deposits across the globe, many of preserved in exquisite detail, but the origins and early evolution of true crabs remain unresolved. This uncertainty hinders the identification of the stratigraphically earliest occurrence of major brachyuran groups in the fossil record, obscuring our understanding of their phylogenetic relationships and thus the ability to estimate divergence times to answer large scale macroevolutionary questions. Here, we present 36 vetted fossil node calibration points for molecular phylogenetic analysis of crabs (one Anomura and 35 Brachyura) and reassess the earliest occurrences of several key clades based on recent fossil discoveries or re-examination of previous studies. For each calibrated node, we provide the minimum and tip maximum ages for the stratigraphically oldest fossil that can be reliably assigned to the group. Disentangling the anatomical disparity of fossil forms and their phylogenetic relationships is crucial to recognize the earliest branching members among brachyuran groups. This represents a critical first step understanding the evolution of carcinization and decarcinization in true crabs, the appearance of key adaptations, and the transition from sea to land and freshwater. The identification of reliable fossils for deep time calibrations, both as tips and nodes, is pivotal to ensure not only precise but more accurate divergence time estimations when reconstructing the crab tree of life

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“…1). The Pirabas Formation is representative of a variety of shallow water paleoenvironments, including surf zones, tidal flats, coastal lagoons, and tidal inlet environments (Góes et al, 1990;Rossetti & Góes, 2004;Rossetti et al, 2013;Borges, 2016;Aguilera et al, 2020;Lima et al, 2020). The Pirabas Formation has been divided into two groups (α, β) and three main facies (α1, α2, and β) (Aguilera et al, 2022).…”

Section: Geological Settingmentioning

confidence: 99%

Brazilian Miocene crabs I. Taxonomic review of Cyclocancer tuberculatus Beurlen, 1958 and Hepatella amazonica Beurlen, 1958 (Pancrustacea, Decapoda, Brachyura)

et al. 2023

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In describing Cyclocancer to accommodate his new species C. tuberculatus, Beurlen highlighted that his new genus was a cancroid intermediate in form between Atelecyclus and Cancer, but with enough characters to be placed in a new genus. Examination of C. tuberculatus type material revealed that Cyclocancer is a junior synonym of Hepatus. Therefore, C. tuberculatus is herein transferred into Hepatus as H. beurleni nomen novum because H. tuberculatus (Beurlen, 1958) is a junior homonym of H. tuberculatus Saussure (1858), a junior synonym of Hepatus pudibundus (Herbst, 1785). Miohepatus gen. nov., comb. nov. is proposed here to accommodate Hepatella amazonica Beurlen from the Pirabas Formation, Neogene, Pará, Brazil, based on new morphological evidence from the type material.

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Uca maracoani (Crustacea, Decapoda, Ocypodidae) from a Miocene paleomangrove in Brazil: A case of evolutionary stasis among tropical American fiddler crabs

Cited by 17 publications

References 26 publications

The Inachoididae spider crabs (Crustacea, Brachyura) from the Neogene of the tropical Americas

The Inachoididae spider crabs (Crustacea, Brachyura) from the Neogene of the tropical Americas

Fossil calibrations for molecular analyses and divergence time estimation for true crabs (Decapoda: Brachyura)

Brazilian Miocene crabs I. Taxonomic review of Cyclocancer tuberculatus Beurlen, 1958 and Hepatella amazonica Beurlen, 1958 (Pancrustacea, Decapoda, Brachyura)

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