Late Cretaceous (Turonian) fish assemblage from Vallecillo, Northeastern Mexico

Blanco-Piñón, Alberto; Frey, Eberhard; Stinnesbeck, Wolfgang; Oliva, José Guadalupe López

doi:10.1127/njgpa/225/2002/39

Cited by 19 publications

(9 citation statements)

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“…The Formation does not typically produce macrofossils, except near Vallecillo, which corresponds to a low-energy, outer shelf environment with localized anoxic episodes (Blanco et al, 2001). These restricted preservational conditions allowed a diverse vertebrate fauna-including marine turtles, fishes, sauropterygians, and squamates-to be preserved complete and often with soft tissue impressions and gastric contents (Blanco-Piñón et al, 2002). This is the state of preservation of Vallecillosaurus donrobertoi (Smith and Buchy, 2008).…”

Section: Mexicomentioning

confidence: 99%

Spatiotemporal Distributions of Non-ophidian Ophidiomorphs, With Implications for Their Origin, Radiation, and Extinction

Mekarski

Pierce

2019

Front. Earth Sci.

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Non-ophidian ophidiomorphs, colloquially referred to as 'dolichosaurs,' are small-bodied aquatic lizards that lived in shallow seaways, rivers, and reef environments during the Late Cretaceous. Preservational, geographic, and taphonomic biases in this group make trends in biodiversity difficult to assess. This is exemplified by the fact that the majority of the described species are monotypic and known only from single specimens, imparting very little information on morphological or spatial variation. Here we present a revision of the spatial and temporal distributions of non-ophidian ophidiomorph lizards ('dolichosaurs') from Cretaceous sediments worldwide. The fossil record of dolichosaurs begins in the Valanginian (Early Cretaceous). The late Early Cretaceous records are sparse but suggest a wide geographic distribution spanning the Tethys and Western Pacific. This is followed by a dense Cenomanian record from Tethyan and British deposits, and rarer specimens from North America. Though there is a substantial drop in the number of specimens recorded from the Turonian-Maastrichtian, these rare occurrences represent the largest geographical distribution of dolichosaurs: spanning Europe, North America, and South America before going extinct during the end-Cretaceous mass extinction. These occurrences indicate that ophidiomorphs most likely originated in the Jurassic Tethys and continued to radiate spatially and phylogenetically until the end of the Mesozoic, showing much more temporally and environmentally diverse patterns than previously indicated.

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Section: Mexicomentioning

confidence: 99%

Spatiotemporal Distributions of Non-ophidian Ophidiomorphs, With Implications for Their Origin, Radiation, and Extinction

Mekarski

Pierce

2019

Front. Earth Sci.

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“…According to Blanco-Piñón and Alvarado-Ortega (2007), the monophyly of the group comprised of Ichthyodectes, Xiphactinus and Vallecillicthys is supported by the occurrence of a broad parasphenoid angle (the ventral surface formed between the otic and ocular section of the parasphenoid ranges between 149°-160°), the hyomandibular facet and ocular section of the parasphenoid projected in parallel to each other, and enlarged premaxilla fangs. Nevertheless, Taverne (2008) later suggested two additional characters, an increase in the number of vertebrae and a short anal fin (with only 11-13 rays).…”

Section: Ichthyodectidaementioning

confidence: 99%

“…Later, Stewart (1999) pointed out the paraphyletic condition of this family. Finally, Blanco-Piñón and Alvarado-Ortega (2007) suggested the rearrangement of Crook´s (1892) family, arguing the inclusion of Vallecillichthys and the possible exclusion of Gillicus. The family Ichthyodectidae sensu Taverne and Chanet (2000) and Taverne (2008) corresponds to the suborder Ichthyodectoidei suggested by Patterson and Rosen (1977).…”

Section: Ichthyodectidaementioning

confidence: 99%

“…obs., 2008)]. 4) Vallecillichthys multivertebratum Blanco and Cavin, 2003, from the Turonian deposits at Vallecillo quarry, Nuevo León (see Blanco-Piñón and Alvarado-Ortega, 2007 Hay (1903) later placed within the genus Gillicus as G. serridens. Bardack (1965Bardack ( , 1968, listed the synonyms of Gillicus arcuatus and the localities where its remains had been collected in the USA and Canada, including: Carlile Shale (Turonian-Santonian), Minnesota and South Dakota; Austin Chalk (Early Coniacian -Late Santonian),Texas; Pierre Shale (Early Coniacian to Early Campanian), Wyoming; and the Boyne Member of the Vermilion River Formation [McNeil and Caldwell (1981) recognized this member as the Niobrara Formation; nevertheless Christopher et al (2006) integrated this member as the upper part of the Carlile Formation], Manitoba.…”

Section: Introductionmentioning

confidence: 99%

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On the occurrence of Gillicus arcuatus (Cope, 1875) (Pisces, Ichthyodectiformes†) in Mexico

Alvarado‐Ortega¹,

Múzquiz²

2009

BSGM

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This work provides the description of the first specimen of the species Gillicus arcuatus (Cope, 1875) collected in Mexico. This ichthyodectiform fossil was collected in a marl flagstone quarry on Los Pilotes Ranch, Muzquiz County, Coahuila. The rocks of the quarry are of Turonian age, and constitute part of the Eagle Ford Formation. This Gillicus arcuatus specimen fits within the known temporal distribution of Gillicus, but extends the geographical distribution of this species to include Northern Mexico, where once the North American Western Interior Sea and the Western Tethys Sea converged. Los Pilotes Ranch is the southernmost fossil locality so far known where Gillicus has been found.Keywords: Gillicus, Ichthyodectiformes, Turonian, Eagle Ford Formation, Coahuila. (Cope, 1875) Resumen Se describe el primer ejemplar de la especie Gillicus arcuatus

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“…T he locality of Vallecillo is known in particular for its well‐preserved fishes (Blanco et al . 2001; Blanco‐Piñón et al . 2002; Blanco and Cavin 2003; Blanco‐Piñón 2003; Blanco‐Piñón and Alvarado‐Ortega 2005, 2006; Ifrim et al .…”

mentioning

confidence: 99%

Palaeoctopus pelagicus from the Turonian of Mexico reinterpreted as a coelacanth (Sarcopterygian) gular plate

et al. 2010

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Abstract:The supposed vestige of a cephalopod gladius from Turonian platy limestones at Vallecillo, north-east Mexico, named Palaeoctopus pelagicus by Fuchs et al. in 2008, is reinterpreted and shown to be a gular plate of a coelacanth fish, possibly of the genus Megacoelacanthus. In addition to the gular plate, two extrascapulars and fin rays of all fins are preserved on one slab and its counterpart. This is the first record of a coelacanth from these lower Turonian strata at Vallecillo, which are rich in fish.

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Late Cretaceous (Turonian) fish assemblage from Vallecillo, Northeastern Mexico

Cited by 19 publications

References 0 publications

Spatiotemporal Distributions of Non-ophidian Ophidiomorphs, With Implications for Their Origin, Radiation, and Extinction

Spatiotemporal Distributions of Non-ophidian Ophidiomorphs, With Implications for Their Origin, Radiation, and Extinction

On the occurrence of Gillicus arcuatus (Cope, 1875) (Pisces, Ichthyodectiformes†) in Mexico

Palaeoctopus pelagicus from the Turonian of Mexico reinterpreted as a coelacanth (Sarcopterygian) gular plate

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