Taphonomy and paleobiology of the Late Cretaceous (Cenomanian-Turonian) pachyrhizodont Goulmimichthys roberti from Vallecillo and Múzquiz, northeastern Mexico

Stinnesbeck, Eva Susanne; Stinnesbeck, Wolfgang; Herder, Fabian; Rust, Jes

doi:10.1016/j.palaeo.2020.109607

Cited by 5 publications

(10 citation statements)

References 20 publications

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“…The vertebral column is mostly straight, different to the frequent curvature identified in specimens of Goulmimichthys roberti from Vallecillo [ 18 ]. In 48.3% of the individuals the vertebral column is unbroken.…”

Section: Resultsmentioning

confidence: 83%

“…gutturosum and G . roberti from Vallecillo lacking individuals smaller than 50 mm [ 18 , 19 ]. A unimodal size distribution is illustrated in Fig 6 by an abundance peak of individuals between 500 to 600 mm length.…”

Section: Resultsmentioning

confidence: 99%

“…This differs from G . roberti from Vallecillo where breakage of the column was abundant in the tail region [ 18 ].…”

Section: Resultsmentioning

confidence: 99%

“…A unimodal distribution is identified similar to that found for G . roberti [ 18 ] from the locality. However, in contrast to G .…”

Section: Discussionmentioning

confidence: 99%

“…only the skull is present) are here considered as incomplete . The following five groups are differentiated regarding articulation: articulated (a), nearly articulated (na), partially articulated, mostly disarticulated (md) and disarticulated (d), as already discussed by Stinnesbeck et al [ 18 ].…”

Section: Methodsmentioning

confidence: 99%

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Taphonomy of the teleost Tselfatia formosa Arambourg, 1943 from Vallecillo, NE Mexico

et al. 2023

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The platy limestone deposit of Vallecillo in northeastern Mexico is dated to the early-middle Turonian (Late Cretaceous) and known to contain a variety of well-preserved vertebrate fossils. One of the most common fish species is the teleost Tselfatia formosa. A review of 149 individuals reveals the presence of two types of body shapes (diamond-shaped and torpedo-shaped individuals) which is interpreted as sexual shape dimorphism (SSD). A unimodal size distribution illustrates a dominance of diamond-shaped specimens, but both body shape types are present in small (young) and big sized (old) individuals. The abundance of well-articulated and complete specimens suggests that T. formosa populated deep levels of the water column, which excluded buoyancy and flotation as well as carcass disintegration near the surface. The reconstruction of the dorsal and anal fins suggests the presence of a membrane between each fin ray and allows for ecological comparison of T. formosa with modern fan fishes.

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Section: Resultsmentioning

confidence: 83%

Section: Resultsmentioning

confidence: 99%

“…This differs from G . roberti from Vallecillo where breakage of the column was abundant in the tail region [ 18 ].…”

Section: Resultsmentioning

confidence: 99%

“…A unimodal distribution is identified similar to that found for G . roberti [ 18 ] from the locality. However, in contrast to G .…”

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning