Archaeochiapasidae n. fam., a new early Cenomanian brachyuran family from Chiapas, Mexico, new hypothesis on Lecythocaridae Schweitzer &amp; Feldmann, 2009, and phylogenetic implications (Crustacea, Decapoda, Brachyura, Eubrachyura)

Guinot, Danièle; Carbot-Chanona, Gerardo; Vega, Francisco J.

doi:10.5252/geodiversitas2019v41a7

Cited by 483 publications

(33 citation statements)

References 119 publications

(66 reference statements)

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“…The fossil fauna from the El Chango quarry indicates that the palaeoenvironment was that of a shallow lagoon or an estuary, with occasional freshwater influences (Alvarado‐Ortega & Ovalles‐Damián 2008; Guinot et al . 2019).…”

Section: Geological Settingmentioning

confidence: 99%

“…2016, 2019; Guinot et al . 2019). The El Chango quarry is remarkable for its fossil diversity with extraordinary preservation.…”

Section: Geological Settingmentioning

confidence: 99%

“…2016, 2019; Guinot et al . 2019). The fossil ichthyofauna of El Chango includes paraclupeids, ichthyodectiforms, enchondontids († Unicachichthys multidentate Díaz‐Cruz et al ., 2016, † Veridagon avendanoi Díaz‐Cruz et al ., 2019), gonorhynchids († Sapperichthys chiapanensis Amaral et al ., 2013), an undetermined † Saurorhamphus Heckel, 1850, and the acanthomorphs † Zoqueichthys carolinae Alvarado‐Ortega & Than‐Marchese, 2012, and † Pepemkay maya Alvarado‐Ortega & Than‐Marchese, 2013 (Fig.…”

Section: Geological Settingmentioning

confidence: 99%

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A new Cenomanian acanthomorph fish from the El Chango quarry (Chiapas, south‐eastern Mexico) and its implications for the early diversification and evolutionary trends of acanthopterygians

Cantalice

Than‐Marchese

Villalobos-Segura

2021

Papers in Palaeontology

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A new Cenomanian spiny‐rayed fish from El Chango quarry, Chiapas, south‐eastern Mexico is described and included, together with †Zoqueichthys carolinae and †Pepemkay maya, in the most recent phylogenetic analysis of acanthomorph fishes encompassing both extant and extinct taxa. The topologies recovered from the parsimony phylogenetic analysis using both multistate (or composite), and contingent (or reductive), coding are compared, along with a Bayesian estimation. All the analyses corroborate the placement of †Z. carolinae in the Lampripterygii, while both †Choichix alvaradoi gen. et sp. nov. and †P. maya are considered to be incertae sedis members of the Acanthopterygii. Although no apomorphic character states for †C. alvaradoi were found, the unique combination of features supports the description of a new genus and species for the Upper Cretaceous of Mexico. The species herein described is the earliest diverging acanthopterygian lineage. The most outstanding character found is the absence of a true pelvic fin spine, which, together with its placement in the phylogenetic analysis, suggests the independent acquisition of the pelvic fin spine in both paracanthopterygians and acanthopterygians from a segmented first soft ray. This extinct taxon therefore plays an important part in our understanding of both fish diversity through time and the early steps in the diversification of acanthopterygians.

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Section: Geological Settingmentioning

confidence: 99%

“…2016, 2019; Guinot et al . 2019). The El Chango quarry is remarkable for its fossil diversity with extraordinary preservation.…”

Section: Geological Settingmentioning

confidence: 99%

Section: Geological Settingmentioning

confidence: 99%

See 1 more Smart Citation

A new Cenomanian acanthomorph fish from the El Chango quarry (Chiapas, south‐eastern Mexico) and its implications for the early diversification and evolutionary trends of acanthopterygians

Cantalice

Than‐Marchese

Villalobos-Segura

2021

Papers in Palaeontology

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“…Since then, this institution has been in charge of collecting, studying, and preserving the fossils from this Lagerstätte. Today, the fossil collection from the El Chango housed in this museum contains more than 400 fossils, including mollusks, crustaceans, ammonites, insects, plants, and fishes (Ovalles-Damián et al, 2006;Vega et al, 2007;Alvarado-Ortega et al, 2009;Than-Marchese, 2012, 2013;Amaral et al, 2013;Huerta-Vergara et al, 2013;Garassino et al, 2013;González-Ramírez et al, 2013;Guerrero-Márquez et al, 2013;Moreno-Bedmar et al, 2014;Carbot-Chanona, 2015;and Guinot et al, 2019;among others). Fishes are the best-preserved fossils at the El Chango; these are tightly laterally compressed, usually complete and articulated, and often show parts of soft tissues (muscles) and phosphatized stomach contents.…”

Section: The El Chango Quarrymentioning

confidence: 99%

A long snout enchodontid fish (Aulopiformes: Enchodontidae) from the Early Cretaceous deposits at the El Chango quarry, Chiapas, southeastern Mexico: A multi-approach study

Díaz-Cruz¹,

Alvarado‐Ortega

Giles

2020

Palaeontol Electron

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Vegrandichthys coitecus gen. et sp., nov., is described in this manuscript based on a single specimen from the Early Cenomanian marine deposits exposed in the El Chango quarry, Chiapas, Southern Mexico. Although this fish exhibits osteological features to support its insertion as a new member of the family Enchodontidae, it has a peculiar combination of characters that includes the presence of a relatively long and stout snout, lateral exposure of the quadrate and mandible articulation, a series of multiple anteroposterior strengthening bars along the opercle, the lateral line running into a series of complex scales, and the anal fin placed behind the dorsal fin. The phylogenetic position of Vegrandichthys was assessed with multiple approaches, namely Standard Maximum Parsimony (SMP), Implied Weighted Maximum Parsimony (IWMP), Phylogenetic Morphometrics (PM), and Bayesian Inference (IB). The single phylogenetic tree obtained from SMP shows the same topology as that resulting from IWMP: Unicachichthys, Veridagon, and Palaeolycus branch successively at the base of Enchodontidae, with the subfamilies Eurypholinae (comprising Vegrandichthys, Eurypholis, and Saurorhamphus) and Enchodontinae resolved as sister groups. The PM performed, including a landmark configuration of the preopercle, suggests that these data contain true phylogenetic signals. In IB, the phylogenetic hypothesis generated retains the clade Eurypholinae, but other taxa are located in a very different topology, which is presumably attributed to the data consistency. Vegrandichthys represents the first formally studied long-snout enchodontid from the Americas. It also was found that the stratigraphic fit of Enchodontidae decreases when Enchodus zimapanensis is included in the analysis.

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“…Conclusions based solely on the dorsal carapaces are speculative. But when, in a family, a Cretaceous specimen has fortunately been found with preserved ventral characters, it allows determining an associated carapace shape to the group, such as in the case of the Cenomanocarcinidae Guinot, Vega & Van Bakel, 2008 from the Early Cretaceous , which becomes a key to identifying allied taxa, differentiating between podotreme and non-podotreme (eubrachyuran) taxa and more accurately interpreting the correlated characters of the carapace.…”

Section: Introductionmentioning

confidence: 99%

New hypotheses concerning the earliest brachyurans (Crustacea, Decapoda, Brachyura)

Guinot

2019

Geodiversitas

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All Jurassic brachyuran taxa known to date are based solely upon dorsal carapaces, and only a limited number of Early and mid-Cretaceous crabs retain ventral parts. Therefore, all Jurassic taxa and many forms from the first half of the Cretaceous are carapace-based entities. All of them are considered to be "dromiaceans", podotremes to be precise. The recent discovery of an exceptionally well-preserved male crab from the Upper Cretaceous (lower Cenomanian) of Chiapas (Mexico), Archaeochiapasa mardoqueoi Guinot, Carbot-Chanona & Vega, 2019, at first sight of a podotreme nature, has allowed a detailed description of its thoracic sternum and pleon, which revealed that it was actually a typical eubrachyuran, in need of a new family, Archaeochiapasidae Guinot, Carbot-Chanona & Vega, 2019. This has brought back to life one of my earlier ideas about the possible non-podotreme nature of certain enigmatic Late Jurassic and Cretaceous Brachyura previously placed in various "dromiacean" (i.e., podotreme) families and superfamilies. My investigations have led the me to formulate the present hypothesis that the extinct families Bucculentidae Schweitzer & Feldmann, 2009 (currently assigned to the Homolodromioidea Al-

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Archaeochiapasidae n. fam., a new early Cenomanian brachyuran family from Chiapas, Mexico, new hypothesis on Lecythocaridae Schweitzer & Feldmann, 2009, and phylogenetic implications (Crustacea, Decapoda, Brachyura, Eubrachyura)

Cited by 483 publications

References 119 publications

A new Cenomanian acanthomorph fish from the El Chango quarry (Chiapas, south‐eastern Mexico) and its implications for the early diversification and evolutionary trends of acanthopterygians

A new Cenomanian acanthomorph fish from the El Chango quarry (Chiapas, south‐eastern Mexico) and its implications for the early diversification and evolutionary trends of acanthopterygians

A long snout enchodontid fish (Aulopiformes: Enchodontidae) from the Early Cretaceous deposits at the El Chango quarry, Chiapas, southeastern Mexico: A multi-approach study

New hypotheses concerning the earliest brachyurans (Crustacea, Decapoda, Brachyura)

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