Systematics of Indian Upper Cretaceous dinosaur and chelonian eggshells

Mohabey, D. M.

doi:10.1080/02724634.1998.10011063

Cited by 65 publications

(62 citation statements)

References 9 publications

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“…M. baghensis also share several features with the studied material. For instance, the range of shell thickness of M. baghensis (1-1.7 mm; Mohabey, 1998) is similar to that that of our specimens (1.1-1.9 mm-thick). Both ootaxa exhibit similar size of node (0.65 mm in diameter in M. baghensis and 0.5 mm in studied material) and pore apertures (0.15 mm in diameter in M. baghensis and 0.1-0.2 mm in studied material).…”

Section: Megaloolithus Baghensissupporting

confidence: 57%

“…The Indian oospecies M. dhoridungriensis differs from our specimens by showing cylindrical-shape shell units, whit a H/W ratio of 2.7 (Mohabey, 1998). M. jabalpurensis and M. mamillare share several structural characters (Vianey-Liaud et al, 1994, only differing in the size of the egg (15 cm and 20 cm in diameter, respectively), the eggshell thickness (2.3 mm in M. jabalpu-than M. aureliensis (1.1-1.9 mm and 0.8-1.4 mm, respectively).…”

Section: Megaloolithus Baghensismentioning

confidence: 60%

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Re-evaluation of the age of some dinosaur localities from the southern Pyrenees by means of megaloolithid oospecies

Vila

Sellés

2015

Journal of Iberian Geology

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Since the beginning of the 20th Century the Upper Cretaceous continental and transitional marine deposits of the southern Pyrenees have produced more than 220 dinosaur fossil localities. New discoveries and advances in magnestostratigraphy and biostratigraphy provide a robust biostratigraphical framework for the latest Cretaceous dinosaur faunas in the region, although the age of some localities has remained uncertain. Here, we re-evaluate the age of some classic and new dinosaur fossil localities on the basis of the potential dating of megaloolithid oospecies and provide parataxonomic and age data for twenty-three localities with new megaloolithid egg fossils. Further, we review the nomenclature and probable synonymies of several of the most historically significant localities in the southern Pyrenees. With the new age assignments proposed for some significant localities (Basturs, Orcau-1, Els Nerets, Figuerola-2, Suterranya-1), we claim that in the southern Pyrenees a) the ankylosaurian dinosaurs survived beyond the early Maastrichtian-late Maastrichtian boundary and coexisted with hadrosauroids; b) the theropod record is scarce in the early Maastrichtian and the taxonomic diversity (richness) of theropods is notably higher in the late Maastrichtian; and c) the megaloolithid egg record assigned to sauropods is continuous through the entire Maaastrichtian but is scarce in the Upper Campanian.Keywords: dinosaurs, biostratigraphy, Late Cretaceous, Pyrenees, Megaloolithus Resumen Desde principio del siglo XX los depósitos continentales y de transición de los Pirineos meridionales han producido más de 220 localidades con fósiles de dinosaurios. Los nuevos descubrimientos y los avances en magnetostratigrafía y biostratigrafía han proporcionado un robusto esquema biostratigráfico de las faunas finicretácicas de dinosaurios en la región, a pesar de que la edad de algunas localidades permanecía incierta. En el presente trabajo reevaluamos la edad de algunas localidades clásicas y nuevas con fósiles de dinosaurios en base al potencial de datación de las oospecies megaloolítidas y aportamos datos parataxonómicos y de edad para veintitrés localidades con nuevos fósiles de huevos megaloolítidos. Además, revisamos la nomenclatura y las probables sinonimias de varias de las localidades históricamente más significativas de los Pirineos meridionales. Con las nuevas asignaciones de edad propuestas en algunas localidades significativas (Basturs, Orcau-1, Els Nerets, Figuerola-2, Suterranya-1) se establece que en los Pirineos meridionales a) los dinosaurios anquilosaurios sobrepasaron el límite entre el Maastrichtiense inferior y superior y coexistieron con los hadrosauroideos; b) el registro de terópodos es escaso en el Maastrichtiense inferior siendo remarcablemente más elevado en el Maastrichtiense superior; y c) el registro de huevos megaloolítidos asignados a saurópodos es continuo en todo el Maastrichtiense pero escaso en el Campaniense superior.

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Section: Megaloolithus Baghensissupporting

confidence: 57%

Section: Megaloolithus Baghensismentioning

confidence: 60%

Re-evaluation of the age of some dinosaur localities from the southern Pyrenees by means of megaloolithid oospecies

Vila

Sellés

2015

Journal of Iberian Geology

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“…Accordingly, the presently reported eggs are identified to be the member of Megaloolithus oogenus. Further subdivision of the same into oospecies is difficult due to the deviations of its certain characteristic properties from those of the eight oospecies proposed by Mohabey (1998Mohabey ( , 2000. It has been noted that …”

Section: Fig2mentioning

confidence: 98%

“…Comparison: Mohabey (1998Mohabey ( , 2000 made a detailed comparative study of shape, size, ornamentation, shell thickness, height and width (H/W) ratio and pore system of the dinosaur's eggs in India and established eight oospecies of Megaloolithidae oofamily. Accordingly, the presently reported eggs are identified to be the member of Megaloolithus oogenus.…”

Section: Fig2mentioning

confidence: 99%

“…The localities are mostly restricted to the Lameta successions exposed at Gujarat, Madhya Pradesh and Maharashtra. Mohabey (1998Mohabey ( , 2000 has made an attempt to review the eggs and nests of dinosaurs from the upper Cretaceous Lameta sediments of central and western India to understand their community, structures, nesting habit and extinction.…”

Section: Introductionmentioning

confidence: 99%

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Megaloolithus Dinosaur Nest from the Lameta Formation of Salbardi Area, Districts Amravati, Maharashtra and Betul, Madhya Pradesh

Srivastava

Mankar

2015

Journal of the Geological Society of India

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The present paper contributes the new locality of a nest of sauropod dinosaur from fluvial sediments of the Lameta Formation of Salbardi area. On the basis of shape, size and microstructures of the shell, it is identified as Megaloolithus. The new locality is away from the known nesting sites of dinosaurs already been reported i.e., Nagpur and Jabalpur, therefore bears significance in reconstruction of palaeogeographic boundary of dinosaurs-nesting sites.

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Natural History and Behavioural Homology

Greene

2007

Novartis Foundation Symposia

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Systematics of Indian Upper Cretaceous dinosaur and chelonian eggshells

Cited by 65 publications

References 9 publications

Re-evaluation of the age of some dinosaur localities from the southern Pyrenees by means of megaloolithid oospecies

Re-evaluation of the age of some dinosaur localities from the southern Pyrenees by means of megaloolithid oospecies

Megaloolithus Dinosaur Nest from the Lameta Formation of Salbardi Area, Districts Amravati, Maharashtra and Betul, Madhya Pradesh

Natural History and Behavioural Homology

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