Decapod crustaceans from the Cretaceous (Aptian-Albian) San Gil Group in the Villa de Leyva section, central Colombia

Bermúdez, Hermann D.; Gómez-Cruz, Arley; Hyžný, Matúš; Moreno‐Bedmar, Josep Anton; Barragán, Ricardo; Sánchez, Mario Moreno; Vega, Francisco J.

doi:10.1127/0077-7749/2013/0308

Cited by 13 publications

(3 citation statements)

References 24 publications

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“…Vega et al (2007) re-assigned Callianassa aquilae Rathbun, 1935 from the Upper Cretaceous strata of Texas, Louisiana and Mexico to Gourretia de Saint Laurent, 1973. Recently, Hyžný in Bermúdez et al (2013) erected a new genus, Rathbunassa , for the species, leaving Gourretia without fossil record. Material from Ottnang exhibits striking similarity to the major propodus of Callianassa denticulata Lutze, 1937, the type species of Gourretia (compare with López de la Rosa et al 1998, fig.…”

Section: Systematic Paleontologymentioning

confidence: 99%

Decapod Crustacea of the Central Paratethyan Ottnangian Stage (middle Burdigalian): implications for systematics and biogeography

Hyžný¹,

Harzhauser²,

Danninger³

2015

Geologica Carpathica

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Decapod crustaceans from the Ottnangian (middle Burdigalian, Lower Miocene) of the Western and Central Paratethys remain poorly known. In this study, we review and re-describe mud shrimps (Jaxea kuemeli), ghost shrimps (Gourretia sp., Calliax michelottii) and brachyuran crabs of the families Leucosiidae, Polybiidae and Portunidae. A dorsal carapace of the genus Calliax is reported for the first time in the fossil record. Re-examination of the type material of Randallia strouhali (Leucosiidae) and Geryon ottnangensis (Geryonidae) resulted in a transfer of these species into Palaeomyra (Leucosiidae) and Liocarcinus (Polybiidae), respectively. Achelous vindobonensis, originally described as a chela of a portunid crab, probably belongs to a member of Polybiidae and is provisionally treated as Liocarcinus sp. Only two species, J. kuemeli and C. michelottii, are also known from the Karpatian, the succeeding Paratethyan stage. In most cases, the decapod assemblages of the Ottnangian consist of rather shallow-water taxa whereas the assemblages of the Karpatian consist of deep-water taxa from the middle and outer shelf. The Central Paratethyan assemblages show similarities in genus composition to the Proto-Mediterranean and recent Indo-Pacific regions. Gourretia sp. represents the earliest occurrence of the respective genus in the fossil record. The Oligocene-Early Miocene appearance of Palaeomyra and Liocarcinus in the circum-Mediterranean implies that sources of present-day diversity hotspots in the Indo-Pacific trace to the Western Tethys (as for other decapod genera), although coeval decapod assemblages in the Indo-Pacific remain poorly known.

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Section: Systematic Paleontologymentioning

confidence: 99%

Decapod Crustacea of the Central Paratethyan Ottnangian Stage (middle Burdigalian): implications for systematics and biogeography

Hyžný¹,

Harzhauser²,

Danninger³

2015

Geologica Carpathica

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“…Vega et al (2007) transferred this species to Gourretia de Saint Laurent, 1973, but Bermúdez et al (2013) have recently noted that the material illustrated as Gourretia aquilae by Vega et al (2007) in fact comprised two different taxa. One proved to be conspecific with the type material of Callianassa aquilae and formed the basis for a new genus, Rathbunassa Hyžný in Bermúdez et al (2013). The second taxon awaits formal description.…”

Section: Upper Cretaceousmentioning

confidence: 99%

Ghost shrimps (Decapoda: Axiidea: Callianassidae) of the Maastrichtian (Late Cretaceous) Ocozocoautla Formation, Chiapas (Mexico)

Hyžný¹,

Vega²,

Coutiño³

2013

BSGM

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On the basis of newly collected material, two ghost shrimp taxa from the lower Maastrichtian Ocozocoautla Formation in Chiapas (Mexico) are recorded. Callianassa burckhardti is reassigned to Eucalliax, which extends the known fossil record of this genus to the early Maastrichtian. A new species, Callianassa (s.l.) ocozocoautlaensis, is described based on a single specimen whose state of preservation does not enable a firm generic assignment, despite the fact that the material exhibits striking similarities to extant Callianassa modesta, occasionally treated as a member of the genus Cheramus. The fossil record of ghost shrimps from Mexico is briefly reappraised and their survival across the K/Pg boundary is discussed. The conservative body plan of ctenochelid and callianassid taxa is emphasized and it is postulated that virtually all major ghost shrimp clades were already established well before the Cenozoic.Keywords: Callianassidae, Eucalliax, Callianassa, Ocozocoautla Formation, Maastrichtian, Mexico. Resumen Con base en material recientemente colectado, se reportan dos taxa de camarones fantasma de la Formación Ocozocoautla del Maastrichtiano inferior de Chiapas (México). Callianassa burckhardti es reasignada a Eucalliax

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“…The collection and description of Cretaceous crustaceans from Colombia have notably increased in recent years (Vega et al, 2007;Vega et al, 2010;Luque et al, 2013;Bermúdez et al, 2013), providing valuable information about the evolution and distribution of these organisms in tropical seas. Collections made from a new fossiliferous locality in the middle part of the Rosablanca Formation (Lower Cretaceous) produced numerous specimens of a new species of Diaulax Bell, 1863, Diaulax rosablanca n. sp.…”

Section: Introductionmentioning

confidence: 99%

A new species of Diaulax Bell, 1863 (Brachyura: Dialucidae) in the Early Cretaceous of the Rosablanca Formation, Colombia

Cruz

Bermúdez²,

Vega

2015

BSGM

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The oldest record of the brachyuran Diaulax Bell, 1863 is based on the description of Diaulax rosablanca n. sp. from the middle part of the Rosablanca Formation (Early Cretaceous, early Valanginian, Department of Santander, Colombia). This is also the oldest record for fossil crustaceans from Colombia. The new species is represented by numerous specimens showing ontogenic variation in size and shape, with adults becoming larger and wider at the anterior portion of carapace. Differences with the other five species of the genus are subtle but sufficient to erect a new species. The associated ammonites Lissonia riveroi (Lisson, 1907), Acantholissonia gerthi (Weaver, 1931) and Raimondiceras sp. confirm an age corresponding to the middle part of the early Valanginian. The paleoenvironment is interpreted as a shallow, restricted low-energy carbonate platform or lagoon within well-oxygenated warm waters. The outcrop includes other decapod remains, too incomplete to offer a preliminary identification.Keywords: Brachyura, Dialucidae, Diaulax, ammonites, Valanginian, Colombia. (Lisson, 1907), Acantholissonia gerthi (Weaver, 1931 Resumen El registro más antiguo del género Diaulax Bell, 1863 se basa en la descripción de Diaulax rosablanca n. sp. de la parte media de la Formación Rosablanca (Cretácico Temprano, Valanginiano temprano, Departamento de Santander, Colombia). El reporte representa también el registro más antiguo de crustáceos fósiles para Colombia. La nueva especie está representada por numerosos especímenes que muestran variación ontogénica en tamaño y forma, con adultos que presentan un caparazón más grande y ancho en la porción anterior. Las diferencias con las otras cinco especies del género son sutiles pero suficientes para proponer una nueva especie. Los ammonites asociados Lissonia riveroi

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Decapod crustaceans from the Cretaceous (Aptian-Albian) San Gil Group in the Villa de Leyva section, central Colombia

Cited by 13 publications

References 24 publications

Decapod Crustacea of the Central Paratethyan Ottnangian Stage (middle Burdigalian): implications for systematics and biogeography

Decapod Crustacea of the Central Paratethyan Ottnangian Stage (middle Burdigalian): implications for systematics and biogeography

Ghost shrimps (Decapoda: Axiidea: Callianassidae) of the Maastrichtian (Late Cretaceous) Ocozocoautla Formation, Chiapas (Mexico)

A new species of Diaulax Bell, 1863 (Brachyura: Dialucidae) in the Early Cretaceous of the Rosablanca Formation, Colombia

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