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The controversial Les Labadous eggshells: A new and peculiar dromaeosaurid (Dinosauria: Theropoda) ootype from the Upper Cretaceous of Europe

Published on Apr 1, 2017in Cretaceous Research2.12
· DOI :10.1016/j.cretres.2016.12.010
Bernat Vila18
Estimated H-index: 18
,
Albert G. Sellés12
Estimated H-index: 12
,
Jean-Claude Beetschen6
Estimated H-index: 6
(Paul Sabatier University)
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Abstract
Abstract The fossil record of small-sized theropods in south-western Europe is scarce and fragmentary. In absence of more direct evidence, the oological record arises as an alternative source of information to infer biodiversity. In this regard, the controversial dinosaur eggshells from the Les Labadous locality in southern France are herein re-evaluated in the light of new material and current parataxonomic information. New data and analyses reveal a new eggshell type, Montanoolithus labadousensis oosp. nov., characterized by a unique combination of characters. Additionally, the phylogenetic analysis reinforces the placement of the new oospecies as the sister taxon of the North American Montanoolithus strongorum , refusing the previous attribution of the Les Labadous remains to Elongatoolithidae. The combination of microstructural and phylogenetic results suggests that Montanoolithus labadousensis was likely produced by a dromaeosaurine dromaeosaurid, a taxonomic attribution that is consistent with the biodiversity of small-sized theropods at the latest Cretaceous of south-western Europe.
  • References (35)
  • Citations (5)
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References35
Newest
Published on Feb 1, 2017in Canadian Journal of Earth Sciences1.42
Darla K. Zelenitsky15
Estimated H-index: 15
(U of C: University of Calgary),
François Therrien16
Estimated H-index: 16
(Royal Tyrrell Museum)
+ 2 AuthorsChristopher L. DeBuhr4
Estimated H-index: 4
(U of C: University of Calgary)
The Willow Creek Formation (upper Maastrichtian – lower Paleocene) of southwestern Alberta is a poorly fossiliferous formation that preserves a low end-Cretaceous dinosaur diversity compared with most correlative terrestrial deposits in the North American Western Interior. Although only three dinosaur taxa are known from skeletal remains (Tyrannosaurus rex, Hadrosauridae indet., and Leptoceratopsidae indet.), study of hundreds of dinosaur eggshells recovered from several sites in the formation r...
Published on Dec 1, 2016in BMC Evolutionary Biology3.04
Shuo Wang6
Estimated H-index: 6
(CAS: Chinese Academy of Sciences),
Shukang Zhang1
Estimated H-index: 1
(CAS: Chinese Academy of Sciences)
+ 1 AuthorsXing Xu41
Estimated H-index: 41
(CAS: Chinese Academy of Sciences)
Oviraptorids, like many other dinosaurs, clearly had a complex pattern of skeletal growth involving numerous morphological changes. However, many ontogenetic skeletal changes in oviraptorids were previously unclear due to the lack of well preserved specimens that represent very young developmental stages. Here we report three elongatoolithid dinosaur eggs from the Upper Cretaceous Nanxiong Formation of Nankang District, Ganzhou City, Jiangxi Province, China that contain in ovo embryonic skeleton...
Published on Jan 1, 2016in Cretaceous Research2.12
Bernat Vila18
Estimated H-index: 18
(University of Zaragoza),
Albert G. Sellés12
Estimated H-index: 12
,
Stephen L. Brusatte34
Estimated H-index: 34
(Edin.: University of Edinburgh)
Abstract Characterization of macroecological patterns for latest Cretaceous dinosaur communities is essential to understand how those faunas were changing during the run-up to the Cretaceous-Paleogene extinction event, and thus the cause of the extinction. Outside of the well-studied latest Cretaceous dinosaurs of North America, southwestern Europe (France, Spain and Portugal) preserves one of the richest end-Cretaceous dinosaur fossil records, as it has produced hundreds of dinosaur fossil loca...
Published on Jan 1, 2016in Cretaceous Research2.12
Víctor Fondevilla8
Estimated H-index: 8
(Autonomous University of Barcelona),
Jaume Dinarès-Turell30
Estimated H-index: 30
+ 4 AuthorsÀngel Galobart19
Estimated H-index: 19
Abstract The first detailed stratigraphic succession of the Upper Cretaceous continental record from the Upper Aude Valley (southern France) is presented together with a magnetostratigraphic study. The combined stratigraphy and magnetostratigraphy of the Marnes rouges inferieures Fm (Lower Red Marls), constrained by biochronological markers such as charophyte occurrence and revised dinosaur eggshells, results in a succession of fluvial red beds dated from chron C32n to the top of chron C31r. It ...
Published on Jan 1, 2016in Cretaceous Research2.12
Josep Marmi17
Estimated H-index: 17
(Autonomous University of Barcelona),
Alejandro Blanco8
Estimated H-index: 8
(Autonomous University of Barcelona)
+ 6 AuthorsÀngel Galobart19
Estimated H-index: 19
(Autonomous University of Barcelona)
Abstract The Moli del Baro-1 site (north-eastern Iberia) has yielded one of the richest fossil assemblages of the continental upper Maastrichtian from western Europe. It includes abundant plant (charophytes, sporomorphs, angiosperm leaves, seeds and logs), invertebrate (mollusc shells, partial insect exoskeletons and eggs) and vertebrate (teeth, bones, eggshells) fossils. The fossil assemblage is composed of both parautochthonous and allochthonous remains that mostly deposited in a pool formed a...
Published on Jan 1, 2016in Cretaceous Research2.12
Kohei Tanaka5
Estimated H-index: 5
(U of C: University of Calgary),
Darla K. Zelenitsky15
Estimated H-index: 15
(U of C: University of Calgary)
+ 3 AuthorsFrançois Therrien16
Estimated H-index: 16
(Royal Tyrrell Museum)
Abstract The Lower Cretaceous (Albian) Sasayama Group in the Hyogo Prefecture of southwestern Japan has yielded various vertebrate fossils, including skeletal remains of dinosaurs, anurans, lizards, and mammals, and recently eggshell fragments. Here we report on numerous fossil eggshells from the bone-bearing Kamitaki locality in Tamba City, which represents a diverse dinosaur eggshell assemblage. Of the more than 90 eggshell fragments recovered, five different types were identified, including e...
Published on Jan 8, 2015in ZooKeys1.14
Zoltán Csiki-Sava8
Estimated H-index: 8
(UB: University of Bucharest),
Eric Buffetaut34
Estimated H-index: 34
(CNRS: Centre national de la recherche scientifique)
+ 2 AuthorsStephen L. Brusatte34
Estimated H-index: 34
(Edin.: University of Edinburgh)
The Late Cretaceous was a time of tremendous global change, as the final stages of the Age of Dinosaurs were shaped by climate and sea level fluctuations and witness to marked paleogeographic and faunal changes, before the end-Cretaceous bolide impact. The terrestrial fossil record of Late Cretaceous Europe is becoming increasingly better understood, based largely on intensive fieldwork over the past two decades, promising new insights into latest Cretaceous faunal evolution. We review the terre...
Published on Jul 1, 2014in Nature43.07
Christian Foth11
Estimated H-index: 11
,
Helmut Tischlinger3
Estimated H-index: 3
,
Oliver W. M. Rauhut28
Estimated H-index: 28
The discovery of numerous feathered dinosaurs and early birds has set the iconic 'Urvogel' (or 'first bird') Archaeopteryx in a broader context. But this venerable taxon still has the capacity to surprise. A newly discovered specimen from the Solnhofen limestone in Bavaria only the eleventh since 1861 shows a generous covering of feathers all over the body. Of particular note is a hindlimb covering resembling feathered 'trousers'. Analysis of feather distribution on the limbs and tail strongly s...
Published on May 1, 2014in Cretaceous Research2.12
Albert G. Sellés12
Estimated H-index: 12
,
Bernat Vila18
Estimated H-index: 18
(University of Zaragoza),
Àngel Galobart19
Estimated H-index: 19
Abstract The scarcity of diagnostic skeletal elements in the latest Cretaceous theropod record of the Ibero-Armorican domain (southwestern Europe) prevents to perform accurate phylogenetic, paleobiogeographic, and diversity studies. In contrast, eggs and eggshells of theropod dinosaurs are relatively abundant and well known in this region from which several ootaxa have been described. Here, we describe the first Late Maastrichtian theropod ootaxon ( Prismatoolithus trempii oosp. nov.) from SW Eu...
Published on Mar 4, 2014in Historical Biology1.49
V. Q. Ribeiro4
Estimated H-index: 4
(NOVA: Universidade Nova de Lisboa),
Octávio Mateus23
Estimated H-index: 23
(NOVA: Universidade Nova de Lisboa)
+ 2 AuthorsR Castanhinha6
Estimated H-index: 6
(IGC: Instituto Gulbenkian de Ciência)
Two new Late Jurassic (uppermost Late Kimmeridgian) dinosaur eggshell sites are described, Casal da Rola and Porto das Barcas, both near Lourinha, central-west Portugal. Casal da Rola yields eggshells with an obliquiprismatic morphotype comparable to those from a nest with the associated fossil embryos from Paimogo, tentatively assigned to the theropod Lourinhanosaurus antunesi. The Porto das Barcas eggshells have a dendrospherulitic morphotype with a prolatocanaliculate pore system. This morpho...
Cited By5
Newest
Published on Jun 1, 2019in Cretaceous Research2.12
Seung Im Choi3
Estimated H-index: 3
(SNU: Seoul National University),
Yuong-Nam Lee14
Estimated H-index: 14
(SNU: Seoul National University)
Abstract Among non-avian maniraptoran eggshells, oofamilies Prismatoolithidae and Elongatoolithidae are usually associated with troodontid and oviraptorosaur dinosaurs, respectively. However, dromaeosaurid eggshells are poorly known so far except for one possible Deinonychus egg associated with the gastralia of Deinonychus . Since then, some Deinonychus eggshell-like non-prismatoolithid and non-elongatoolithid maniraptoran eggshells have been reported including oogenera Reticuloolithus and Monta...
Published on Nov 5, 2017in Historical Biology1.49
Pavel P. Skutschas13
Estimated H-index: 13
(SPbU: Saint Petersburg State University),
Valentina D. Markova1
Estimated H-index: 1
+ 4 AuthorsAlexander O. Averianov23
Estimated H-index: 23
(RAS: Russian Academy of Sciences)
AbstractThe Lower Cretaceous Ilek Formation in Western Siberia (Russia) has yielded various vertebrate fossils, including skeletal remains of dinosaurs. Here we report on a fragmentary theropod egg from the vertebrate locality Shestakovo 3 of the Ilek Formation in Kemerovo Province. We assign the specimen to the oogenus Prismatoolithus (oofamily Prismatoolithidae) as Prismatoolithus ilekensis oosp. nov., on the basis of the following unique combination of characters: ovoid-shaped egg; thin eggsh...
Published on Apr 1, 2019in Earth-Science Reviews9.53
Víctor Fondevilla8
Estimated H-index: 8
(Autonomous University of Barcelona),
V. Riera (Centro de Estudios y Experimentación de Obras Públicas)+ 6 AuthorsÀngel Galobart19
Estimated H-index: 19
Abstract In south-western Europe, the uppermost Cretaceous continental deposits in the different sedimentary basins of Iberia (Portugal and north and central Spain), the Pyrenees (Spain and France) as well as Languedoc and Provence (southern France) provide one of the few terrestrial records that allow a comprehensive study of the Campanian-Maastrichtian dinosaur assemblages. For the last years the southern Pyrenees has been the target of intense geological, palaeontological and geochronological...
Published on Jun 3, 2018in Historical Biology1.49
Mariela Soledad Fernández8
Estimated H-index: 8
(CONICET: National Scientific and Technical Research Council),
Leonardo Salgado27
Estimated H-index: 27
(CONICET: National Scientific and Technical Research Council)
ABSTRACTWe report the youngest fossil egg of avian affinities from the Cretaceous (Allen Formation, Campanian-Maastrichtian) of Patagonia, Argentina. The fossil consists in most of the internal cast of a single egg, preserving some eggshell fragments on one of its poles. Its axes are 4.5 cm and 3.06 cm. The eggshell surface is smooth, and its thickness average is 400 µm. The eggshell has two layers, with an ornithoid basic type and a ratite morphotype. The well-developed mammillary layer is 154 ...
Published on Mar 1, 2018in Canadian Journal of Earth Sciences1.42
Jared T. Voris1
Estimated H-index: 1
(U of C: University of Calgary),
Darla K. Zelenitsky15
Estimated H-index: 15
(U of C: University of Calgary)
+ 1 AuthorsKohei Tanaka5
Estimated H-index: 5
(Nagoya University)
North America is known for its rich uppermost Cretaceous record of dinosaur egg remains, although a notable fossil gap exists during the lower Maastrichtian. Here we describe a diverse dinosaur eggshell assemblage from the St. Mary River Formation of southern Alberta that, in conjunction with recently described eggs from the same formation in Montana, helps fill this gap and sheds light on the dinosaur diversity in this poorly fossiliferous formation. Three theropod eggshell types (Continuoolith...
Published on Nov 1, 2017in Cretaceous Research2.12
Frankie D. Jackson19
Estimated H-index: 19
(MSU: Montana State University),
David J. Varricchio28
Estimated H-index: 28
(MSU: Montana State University)
Abstract Two closely associated egg types occur at the same locality in the Upper Cretaceous (Maastrichtian) St. Mary River Formation in north central Montana. These specimens represent the first fossil eggs described from this formation. At least fifteen small ovoid eggs or egg portions are scattered through a 25 cm interval of rock. Five significantly larger, round eggs overlie these smaller eggs and are in close proximity to one another on a single bedding plane. The best preserved egg of the...