Introduction of Indian Late Cretaceous Dinosaur Eggs and Eggshells of Peninsular India

Khosla, Ashu; Lucas, Spencer G.

doi:10.1007/978-3-030-56454-4_1

Cited by 10 publications

(7 citation statements)

References 93 publications

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“…In general morphology of having fibrous bundles perpendicular to the long axis of the shell units and on comparison with the earlier reports of MT in dinosaur eggshells (Kohring, 1999;Grellet-Tinner et al 2004;Sellés et al 2013;Bravo & Gaete, 2015), the calcitic layer at the base of shell units is identified as an MT layer. However, these eggshell fragments are clearly different from other Megaloolithus and Fusioolithus oospecies of Khosla and Sahni (1995), Mohabey (1998) and Fernández and Khosla (2015) in being thin and lacking more pronounced cylindrical shell units and highly nodose external surface ornamentation. Though the wide shell units resemble those of the eggshell of turtles, the presence of basal knobs and the horizontal network of pore canals identify them as sauropod eggshells (Grellet-Tinner et al 2004;Dhiman et al 2019).…”

mentioning

confidence: 63%

“…Fusioolithidae Fernández and Khosla (2015) Fusioolithus baghensis (Khosla & Sahni 1995) Fernández and Khosla (2015) Referred material. DUGF/162-166 Stratigraphic horizon and locality.…”

Section: Systematic Palaeontologymentioning

confidence: 99%

“…Many of the oospecies earlier described under the genus Megaloolithus were transferred to the new genus Fusioolithus (Fernández and Khosla, 2015). These authors synonymized Megaloolithus baghensis (Khosla & Sahni, 1995) and Megaloolithus balasinorensis (Mohabey, 1998)…”

Section: Systematic Palaeontologymentioning

confidence: 99%

“…The fauna comprises at least six species of abelisaurid theropod dinosaurs and about three taxa of titanosaurid sauropods (see Prasad, 2012;Prasad & Sahni, 2014;Khosla & Bajpai, 2021 for references). In addition to body fossils, widespread occurrence of clutches, eggs and eggshells of sauropod dinosaurs has also been reported from the Lameta outcrops of Madhya Pradesh, Gujarat and Maharashtra (Srivastava et al 1986;Sahni et al 1994;Khosla & Sahni, 1995;Mohabey, 1998;Srivastava & Mankar, 2015;H. Dhiman, unpub.…”

Section: Introductionmentioning

confidence: 99%

“…Eggshells from egg-level 3 of the Upper Cretaceous Auca Mahuevo site, Argentina, were initially referred to the oofamily Megaloolithidae (Chiappe et al 1998). Grellet-Tinner et al Fusioolithus includes two oospecies F. baghensis and F. berthei (Khosla & Sahni, 1995). The latter differs from the former in having thicker eggshells (2.4-2.9 mm) and greater height-width ratio (3.27:1).…”

mentioning

confidence: 99%

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Preservation of Membrana Testacea in titanosaurid dinosaur eggshells from the Upper Cretaceous Deccan volcano-sedimentary strata of Central India

2022

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The calcitic eggshell units of amniote eggs are underlain by a soft organic layer, the Membrana Testacea (MT), which has a mesh-like texture consisting of fibrils of organic material. Because of its soft anatomy, the MT is rarely preserved in fossils and only a few fossil reports of MT are known so far. Here we report the preservation of a mineralized MT layer in titanosaur eggshells recovered from a marlstone facies interbedded with the Deccan lava flows exposed near Piplanarayanwar village of Chhindwara District, Madhya Pradesh state in Central India. The MT layer is mesh-like, resembling protein membranes of extant reptiles and the MT reported in titanosaurid eggshells of the Upper Cretaceous Anacleto Formation at Auca Mahuevo, Argentina. The presence of tendrils and fibres of calcite in the MT layer testifies to the fact that the calcium layer represents the original fibrous MT. It also supports the view that fossilization of soft tissues like MT is possible because of the inferred anaerobic conditions that prevailed during the deposition of Piplanarayanwar intertrappean sediments in lacustrine or paludal bodies in a coastal-plain setting.

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mentioning

confidence: 63%

“…Fusioolithidae Fernández and Khosla (2015) Fusioolithus baghensis (Khosla & Sahni 1995) Fernández and Khosla (2015) Referred material. DUGF/162-166 Stratigraphic horizon and locality.…”

Section: Systematic Palaeontologymentioning

confidence: 99%