Late Cretaceous (Maastrichtian) Chondrichthyes and Osteichthyes from northeastern Iberia

Blanco, Alejandro; Szabó, Márton; Blanco-Lapaz, Ángel; Marmi, Josep

doi:10.1016/j.palaeo.2016.10.039

Cited by 28 publications

(12 citation statements)

References 69 publications

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“…Thus the high abundance of amiids and lepisosteids in the Maastrichthian appears to reflect a change in the structure of the aquatic communities of this time. Interestingly, a similar trend for high abundance of lepisosteids in the late Maastrichtian has also been observed in Europe (Cavin 1999;Blanco et al 2017). A third change in the structure of aquatic paleocommunities through the Late Cretaceous is an increase in the importance of members of the Acanthomorpha relative to other teleosts.…”

Section: Aquatic Paleocommunities Of the Milk River Formationsupporting

confidence: 57%

Non-marine fish of the late Santonian Milk River Formation of Alberta, Canada – evidence from vertebrate microfossil localities

Brinkman

Neuman

Divay

2017

Vert. Anat. Morph. Palaeo.

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The diversity of fishes from the late Santonian Milk River Formation is investigated using a combined taxonomic/morphotype approach. Twenty-one taxa are present, including four elasmobranchs, seven basal actinopterygians, and of ten teleosts. The Milk River fish assemblage is more similar to assemblages from southern Utah than it is to the late Campanian assemblage of Alberta in the presence of the elasmobranch Lonchidion and a member of amiid subfamily Vidalamiinae, the relatively high abundance of the ostariophysan teleost U3/BvD, and the absence of sturgeon, Holostean A, Holostean B, and Coriops. This similarity is hypothesized to be the result of a northern shift in the distribution of these taxa during times of high global temperature, resulting in the presence of a “southern” faunal assemblage in Alberta during the late Santonian. In the relative abundance patterns of major groups of fish, the Milk River Formation assemblage is similar to late Campanian assemblages and different from those of late Maastrichtian in that amiids and lepsisoteids are of relatively low abundance. The abundance of acanthomorph teleosts in the Milk River Formation is similar to that of contemporaneous assemblages from Utah, which supports a pattern of increasing abundance of acanthomorphs from their first occurrence in non-marine vertebrate assemblages of the Western Interior in the Coniacian through to the end of the Cretaceous.

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Section: Aquatic Paleocommunities Of the Milk River Formationsupporting

confidence: 57%

Non-marine fish of the late Santonian Milk River Formation of Alberta, Canada – evidence from vertebrate microfossil localities

Brinkman

Neuman

Divay

2017

Vert. Anat. Morph. Palaeo.

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“…They include † Cretophareodus alberticus from the Campanian Oldman Formation (Li, 1996) of Canada and a possible indeterminate osteoglossid from the Maastrichtian Tremp Formation in Catalonia, Spain (Blanco et al . 2017), in addition to several jaw fragments, teeth and scales from Bolivia and India (Sahni & Bajpai 1988; Prasad 1989; Gayet & Meunier 1998). More complete osteoglossid remains are known from freshwater early Palaeogene deposits, roughly contemporary with the marine occurrences described in the previous section.…”

Section: Discussionmentioning

confidence: 99%

A Paleocene (Danian) marine osteoglossid (Teleostei, Osteoglossomorpha) from the Nuussuaq Basin of Greenland, with a brief review of Palaeogene marine bonytongue fishes

Capobianco

Foreman

Friedman

2019

Papers in Palaeontology

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The early Palaeogene represents a key interval in the evolution of modern marine fish faunas. Together with the first appearances of many familiar fish lineages characteristic of contemporary marine environments, early Palaeogene marine deposits worldwide feature the occurrence of osteoglossid bonytongues. Their presence in marine rocks is surprising, given that these fishes are strictly associated with freshwater environments in modern settings and in other parts of the fossil record. Despite its possible relevance to faunal recovery after the Cretaceous–Palaeogene (K–Pg) extinction, this marine osteoglossid radiation is relatively understudied. Here we describe an osteoglossid specimen from marine Danian deposits of western Greenland (Eqalulik Formation, northern Nuussuaq Peninsula). It consists of disarticulated cranial, pectoral and vertebral material belonging to a relatively large‐bodied predator, similar to the widespread †Brychaetus but with some distinctive features. This specimen expands the geographical range of extinct osteoglossids to the Arctic and represents one of the earliest records of this group in marine deposits. We review other fossil occurrences of marine osteoglossids, highlighting temporal and biogeographical patterns that characterize their rise, diversification and sudden disappearance in the middle Eocene. It is likely that the transition from freshwater to marine environments occurred around the K–Pg boundary, possibly related to ecological replacement of predatory fish lineages that went extinct at the end of the Cretaceous. Further study of the Eqalulik Formation fauna could yield additional insight into the consequences of the end‐Cretaceous extinction with regard to marine fish evolution and the assembly of modern marine faunas.

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“…Channelized sandstone of the Lower Red Unit provided numerous vertebrate fossil remains, which are represented by crocodylomorphs, dinosaurs, amphibians, crustacea and fishes (Marmi et al ., 2015). Fish assemblages (Blanco et al ., 2017) include a mixture of euryhaline, freshwater (cypriniforms and osteoglossids) and marine species (anacoracids, Caturus , Belonostomus and phyllodontids). Remains of euryhaline and primarily marine fishes have been found at ca 60 to 70 km inland of the Campo palaeo‐shoreline (Blanco et al ., 2017), in the Sant Romà d’Abella area (Fig.…”

Section: Geological Settingmentioning

confidence: 99%

Reading tidal processes where their signature is cryptic: The Maastrichtian meandering channel deposits of the Tremp Formation (Southern Pyrenees, Spain)

et al. 2021

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Tidal currents can propagate tens of kilometres landward from the shoreline, forming dense networks of meandering channels, which drain vegetated areas and range in width from tens to hundreds of metres. Sedimentary products of these inland tidal channels are poorly documented in the stratigraphic record, as most studies on tidal processes occurring in inland areas are focused on fluvio-tidal interaction. The present study contributes to filling this gap, investigating Late Maastrichtian meandering-channel deposits of the Tremp-Graus Basin (Southern Pyrenees, Spain). These deposits accumulated in a growth syncline, which allowed the development of a 20 to 30 km wide, 80 to 100 km long, tidal embayment. Sporadic occurrence of poorly-developed rhythmites and bidirectional currents confirms the occurrence of tidal processes, whereas their local dominance is inferred from several pieces of evidence, including: (i) disproportion between depth of the larger channels and related catchment area; (ii) landward-accretion of pointbar bodies; (iii) landward fining of point-bar bodies, and (iv) reconstruction of palaeo-flow patterns at the meander bend scale. This work shows that three-dimensional architectural modelling and reconstruction of bar planform transformation styles can provide a critical contribution to the understanding of tidal control on sedimentation in inland areas.

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Late Cretaceous (Maastrichtian) Chondrichthyes and Osteichthyes from northeastern Iberia

Cited by 28 publications

References 69 publications

Non-marine fish of the late Santonian Milk River Formation of Alberta, Canada – evidence from vertebrate microfossil localities

Non-marine fish of the late Santonian Milk River Formation of Alberta, Canada – evidence from vertebrate microfossil localities

A Paleocene (Danian) marine osteoglossid (Teleostei, Osteoglossomorpha) from the Nuussuaq Basin of Greenland, with a brief review of Palaeogene marine bonytongue fishes

Reading tidal processes where their signature is cryptic: The Maastrichtian meandering channel deposits of the Tremp Formation (Southern Pyrenees, Spain)

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