Primer registro del género Jenynsia Günther, 1866 (Teleostei: Cyprinodontiformes) en el Pleistoceno Medio tardío de la provincia de Buenos Aires (Argentina)

Bogan, Sergio; Reyes, Martín Leonardo de los; Cenizo, Marcos

doi:10.1590/s0031-10492009000500001

Cited by 14 publications

(10 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Günther, from the Pleistocene of Argentina (Bogan et al . ), the record of fossil cyprinodontiforms is poorly known. It includes mentions of undetermined Cyprinodontiformes from Paleocene and Eocene sediments of Argentina, as well as the Neogene of Brazil (Parenti ; Cione ; Arratia & Cione ; Cione & Báez ), probable anablepids in the San José Formation (late Miocene) in Catamarca and Tucumán and probable poeciliids in the Río Salí Formation (middle Miocene) in Tucumán, Argentina (Bossi & Palma ; Gavriloff & Bossi ; Arratia & Cione ; Anzótegui & Herbst ; Cione & Báez ).…”

mentioning

confidence: 99%

The rise of internal fertilization in the Anablepidae (Teleostei, Cyprinodontiformes): two new genera and species from the Miocene of Tucumán, Argentina

Sferco

Herbst

Aguilera

et al. 2017

Papers in Palaeontology

View full text Add to dashboard Cite

Two new genera and species of Cyprinodontiformes from the Miocene of Tucumán, Argentina, are described: Tucmanableps cionei and Sachajenynsia pacha. Both exhibit sexual dimorphism, indicated by the modification of the male anal fin into an intromittent organ; tricuspid teeth in the jaws; abdominal pelvic fins and other features that demonstrate a relationship with the family Anablepidae. Males of Sachajenynsia pacha gen. et sp. nov. present modifications of the anal fin, herein interpreted as an incipient gonopodium, whereas the anal fin of Tucmanableps cionei gen. et sp. nov. is modified into a complex gonopodium with a median distal plate, which is unique among the Anablepidae. In extant genera of the family, modification of the anal fin into an intromittent organ is related to internal fertilization; this condition is inferred for S. pacha but was clearly the reproductive mode of T. cionei. In our phylogenetic analysis, S. pacha is recovered as the sister group of all anablepids with evident internal fertilization, while T. cionei forms a clade with Anableps species. The occurrence of two new anablepid genera showing distinct and unique morphologies suggests that the fossil diversity of the Anablepidae may be higher than the extant one. Also, the new taxa were found in open lake deposits with coastal and inner lake sediments of the Río Salí Formation associated with the Miocene Entrerrian–Paranense Marine Ingression, supporting the idea that coastal environments and brackish waters are related to the generic diversification of the Anablepidae, as was suggested for the species of Jenynsia.

show abstract

mentioning

confidence: 99%

The rise of internal fertilization in the Anablepidae (Teleostei, Cyprinodontiformes): two new genera and species from the Miocene of Tucumán, Argentina

Sferco

Herbst

Aguilera

et al. 2017

Papers in Palaeontology

View full text Add to dashboard Cite

show abstract

“…The only known fossil record of a recent anablepid genus consists of a premaxilla belonging to an unidentified species of Jenynsia from the Late Pleistocene (230–125 Kyr) of Centinela del Mar, Argentina [ 71 ]. The only extant anablepid species found in this area is J .…”

Section: Discussionmentioning

confidence: 99%

Multigene phylogeny supports diversification of four-eyed fishes and one-sided livebearers (Cyprinodontiformes: Anablepidae) related to major South American geological events

Amorim

Costa

2018

PLoS ONE

View full text Add to dashboard Cite

The high diversity of Neotropical fishes has been attributed to major South American palaeogeographic events, such as Andean uplift, rise of the Isthmus of Panama and marine transgressions. However, the unavailability of temporal information about evolution and diversification of some fish groups prevents the establishment of robust hypotheses about correlations between species diversification and proposed palaeogeographical events. One example is the Anablepidae, a family of teleost fishes found mostly in coastal habitats of Central and South America, but also in some inner river basins of South America. Historical aspects of the distribution patterns of the Anablepidae were never analysed and no accurate estimation of time of its origin and diversification is presently available. A multi-gene analysis was performed to estimate Anablepidae phylogenetic position, age and biogeography, comprising seven nuclear genes. The suborder Cyprinodontoidei was recovered in three major clades, one comprising all the Old World Cyprinodontoidei and two comprising New World lineages. Anablepidae was recovered as the sister group of the New World Poeciliidae, with the Amazonian genus Fluviphylax as their sister group. The ages found for the origin and diversification of Cyprinodontiformes were congruent with the pattern recorded for other vertebrate groups, with an origin anterior to the Cretaceous-Paleogene (K-Pg) transition and diversification during the Paleogene. The age estimated for the split between the Atlantic and Pacific lineages of Anableps was congruent with the rise of Panamanian Isthmus. The results suggest Miocene marine transgressions as determinant to the current distribution of Jenynsia.

show abstract

“…Furthermore, a single fossil species of Cyprinodon LACÉPÈDE, 1803 from the late Pliocene and several species of Fundulus LACÉPÈDE, 1803 from the middle Miocene to early Pleistocene have been reported from the United States (see review by [ 16 , 17 ]). Fossil species of the Anablepidae such as † Carrionellus WHITE, 1927 from the early Miocene [ 18 ] and Jenynsia GÜNTHER, 1866 from the late middle Pleistocene [ 19 ] have been reported from South America [ 20 ], whereas Empetrichthys GILBERT, 1893 has been reported from the Pliocene of the United States [ 21 ]. Additionally, several fossil taxa of the Goodeidae such as Alloophorus , Goodea , Chapalichthys , Ameca , Girardinichthys , Xenotoca , and † Tapatia have been reported from the late Miocene to late Pliocene of North America (see review by [ 22 , 23 ]).…”

Section: Introductionmentioning

confidence: 99%

†Kenyaichthyidae fam. nov. and †Kenyaichthys gen. nov. – First Record of a Fossil Aplocheiloid Killifish (Teleostei, Cyprinodontiformes)

Altner

Reichenbacher

2015

PLoS ONE

View full text Add to dashboard Cite

The extant Cyprinodontiformes (killifishes) with their two suborders Cyprinodontoidei and Aplocheiloidei represent a diverse and well-studied group of fishes. However, their fossil record is comparatively sparse and has so far yielded members of the Cyprinodontoidei only. Here we report on cyprinodontiform fossils from the upper Miocene Lukeino Formation in the Tugen Hills of the Central Rift Valley of Kenya, which represent the first fossil record of an aplocheiloid killifish. A total of 169 specimens - mostly extraordinarily well preserved - and a sample of ten extant cyprinodontiform species were studied on the basis of morphometrics, meristics and osteology. A phylogenetic analysis using PAUP was also conducted for the fossils. Both the osteological data and the phylogenetic analysis provide strong evidence for the assignment of the fossils to the Aplocheiloidei, and justify the definition of the new family †Kenyaichthyidae, the new genus †Kenyaichthys and the new species †K. kipkechi sp. nov. The phylogenetic analysis unexpectedly places †Kenyaichthys gen. nov. in a sister relationship to the Rivulidae (a purely Neotropical group), a probable explanation might be lack of available synapomorphies for the Rivulidae, Nothobranchiidae and Aplocheilidae. The specimens of †K. kipkechi sp. nov. show several polymorphic characters and large overlap in meristic traits, which justifies their interpretation as a species flock in statu nascendi. Patterns of variation in neural and haemal spine dimensions in the caudal vertebrae of †Kenyaichthys gen. nov. and the extant species studied indicate that some previously suggested synapomorphies of the Cyprinodontoidei and Aplocheiloidei need to be revised.

show abstract

Primer registro del género Jenynsia Günther, 1866 (Teleostei: Cyprinodontiformes) en el Pleistoceno Medio tardío de la provincia de Buenos Aires (Argentina)

Cited by 14 publications

References 7 publications

The rise of internal fertilization in the Anablepidae (Teleostei, Cyprinodontiformes): two new genera and species from the Miocene of Tucumán, Argentina

The rise of internal fertilization in the Anablepidae (Teleostei, Cyprinodontiformes): two new genera and species from the Miocene of Tucumán, Argentina

Multigene phylogeny supports diversification of four-eyed fishes and one-sided livebearers (Cyprinodontiformes: Anablepidae) related to major South American geological events

†Kenyaichthyidae fam. nov. and †Kenyaichthys gen. nov. – First Record of a Fossil Aplocheiloid Killifish (Teleostei, Cyprinodontiformes)

Contact Info

Product

Resources

About