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

Published online by Cambridge University Press:  28 November 2022

Ranjit Singh Lourembam ,
Harsha Dhiman  and
Guntupalli VR Prasad Open the ORCID record for Guntupalli VR Prasad [Opens in a new window]
Ranjit Singh Lourembam*
Affiliation:
Department of Geology, Panjab University, Chandigarh 160014, India Department of Geology, Centre for Advanced Studies, University of Delhi, Delhi 110007, India
Harsha Dhiman
Affiliation:
Department of Geology, Centre for Advanced Studies, University of Delhi, Delhi 110007, India
Guntupalli VR Prasad*
Affiliation:
Department of Geology, Centre for Advanced Studies, University of Delhi, Delhi 110007, India
*
Authors for correspondence: Ranjit Singh Lourembam, Email: ranjit100m@gmail.com; Guntupalli VR Prasad, Email: guntupalli.vrprasad@gmail.com
Authors for correspondence: Ranjit Singh Lourembam, Email: ranjit100m@gmail.com; Guntupalli VR Prasad, Email: guntupalli.vrprasad@gmail.com
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Abstract

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.

Keywords

intertrappeanCretaceousMembrana Testaceatitanosaurideggshells
Type
Original Article
Information
Geological Magazine , Volume 160 , Issue 2 , February 2023 , pp. 361 - 371
Copyright
© The Author(s), 2022. Published by Cambridge University Press

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References

Allison, PA (1988) The role of anoxia in the decay and mineralization of proteinaceous macrofossils. Paleobiology 14, 139–54.CrossRefGoogle Scholar
Bande, MB, Chandra, A, Venkatachala, BS and Mehrotra, RC (1986) Deccan intertrappean floristics and its stratigraphic implications. In Proceedings of the Symposium on Paleocene of India: Limits and Subdivisions (ed. Venkatachala, BS), pp. 83–123. Lucknow: Birbal Sahni Institute of Palaeobotany.Google Scholar
Bhatia, SB and Mannikeri, MS (1976) Some charophytes from the Deccan intertrappean beds near Nagpur, Central India. Geophytology 6, 75–81.Google Scholar
Bhatia, SB and Rana, RS (1984) Palaeogeographic implications of the Charophyta and Ostracoda of the intertrappean beds of peninsular India. Memoirs of the Geological Society of France 147, 29–35.Google Scholar
Bottjer, DJ, Etter, W, Hagadorn, JW and Tang, CM (2002) Fossil-Lagerstätten: jewels of the fossil record. In Exceptional Fossil Preservation: A Unique View on the Evolution of Marine Life (eds Bottjer, DJ, Etter, W, Hagadorn, JW and Tang, CM), pp. 1–10. New York: Columbia University Press.Google Scholar
Bravo, AM and Gaete, R (2015) Titanosaur eggshells from the Tremp Formation (Upper Cretaceous, Southern Pyrenees, Spain). Historical Biology 27, 1079–89.CrossRefGoogle Scholar
Buffetaut, E (1987) On the age of the dinosaur fauna from the Lameta Formation (Upper Cretaceous of Central India). Newsletters on Stratigraphy 18, 1–6.CrossRefGoogle Scholar
Calvo, JO, Engelland, S, Heredia, SE and Salgado, L (1997) First record of dinosaur eggshells (?Sauropoda–Megaloolithidae) from Neuquén, Patagonia, Argentina. Gaia 14, 23–32.Google Scholar
Cappetta, H (1972) Les poissons crétacés et tertiaires du bassin des Iullemeden (République du Niger). Palaeovertebrata 5, 179–251.Google Scholar
Chiappe, LM, Coria, RA, Dingus, L, Jackson, F, Chinsamy, A and Fox, M (1998) Sauropod dinosaur embryos from the Late Cretaceous of Patagonia. Nature 396, 258–61.CrossRefGoogle Scholar
Courtillot, V, Besse, J, Vandamme, DM, Montigny, R, Jaeger, JJ and Cappetta, H (1986) Deccan flood basalts at the Cretaceous/Tertiary boundary? Earth and Planetary Science Letters 80, 361–74.CrossRefGoogle Scholar
Cuif, JP, Dauphin, Y and Sorauf, JE (2010) Biominerals and Fossils through Time. Cambridge: Cambridge University Press, 490 pp.CrossRefGoogle Scholar
Dhiman, H, Dutta, S, Kumar, S, Verma, V and Prasad, GVR (2021) Discovery of proteinaceous moieties in Late Cretaceous dinosaur eggshell. Palaeontology 64, 585–95.CrossRefGoogle Scholar
Dhiman, H, Prasad, GVR and Goswami, A (2019) Parataxonomy and palaeobiogeographic significance of dinosaur eggshell fragments from the Upper Cretaceous strata of the Cauvery Basin, South India. Historical Biology 31, 1310–22.Google Scholar
Díez-Canseco, D, Arz, JA, Benito, MI, Díaz-Molina, M and Arenillas, I (2014) Tidal influence in redbeds: a palaeoenvironmental and biochronostratigraphic reconstruction of the Lower Tremp Formation (South-Central Pyrenees, Spain) around the Cretaceous/Paleogene boundary. Sedimentary Geology 312, 31–49.CrossRefGoogle Scholar
Dogra, NN, Singh, RY and Kulshrestha, SK (1994) Palynostratigraphy of infratrappean Jabalpur and Lameta formations (Lower and Upper Cretaceous) in Madhya Pradesh, India. Cretaceous Research 15, 205–15.CrossRefGoogle Scholar
Feist-Castel, M (1975) Répartition des Charophytes dans le Paléocène et l’Éocène du basin d’Aix-en-Provence. Bulletin de la Société géologique de France (ser. 7) 17, 88–97.CrossRefGoogle Scholar
Fernández, MS and Khosla, A (2015) Parataxonomic review of the Upper Cretaceous dinosaur eggshells belonging to the oofamily Megaloolithidae from India and Argentina. Historical Biology 27, 158–80.CrossRefGoogle Scholar
Fernández, MS, Vila, B and Moreno-Azanza, M (2022) Eggs, nests, reproductive biology of sauropodomorph dinosaurs from South America. In South American Sauropodomorph Dinosaurs (eds Otero, A, Carballido, JL and Diego, P), pp. 393–41. Cham: Springer Earth System Sciences, Springer. doi: 10.1007/978-3-030-95959-3_11.CrossRefGoogle Scholar
Folk, RL and Lynch, FL (2001) Organic matter, putative nanobacteria and the formation of ooids and hardgrounds. Sedimentology 48, 215–29.CrossRefGoogle Scholar
Gayet, M, Rage, JC and Rana, RS (1984) Nouvelles ichthyofaune et herpétofaune de Gitti Khadan, le plus ancien gisement connu du Deccan (Crétacé/Paléocène) à microvertébrés. Implications paléogéographiques. Mémoires de la Société géologique de France 147, 55–65.Google Scholar
Grellet-Tinner, G (2005) Membrana testacea of titanosaurid dinosaur eggs from Auca Mahuevo (Argentina): implications for exceptional preservation of soft tissue in Lagerstätten. Journal of Vertebrate Paleontology 25(1), 99–106.CrossRefGoogle Scholar
Grellet-Tinner, G, Chiappe, LM and Coria, R (2004) Eggs of titanosaurid sauropods from the Upper Cretaceous of Auca Mahuevo (Argentina). Canadian Journal of Earth Sciences 41, 949–60.CrossRefGoogle Scholar
Grigorescu, D and Oana-Claudia, B (2017–18) Comparative analysis of the eggshell biomineralization in modern birds and megaloolithid eggs from the Maastrichtian of the Haţeg Basin: abnormal shell units linked to diagenesis in the fossil eggshells. Revue Roumaine de Geologie 61–62, 45–65.Google Scholar
Hayward, JM, Zelenitsky, DK, Smith, DL, Zaft, DM and Clayburn, JK (2000) Eggshell taphonomy at modern gull colonies and a dinosaur clutch site. Palaios 15, 343–55.2.0.CO;2>CrossRefGoogle Scholar
Jain, SL and Sahni, A (1983) Some Upper Cretaceous vertebrates from Central India and their palaeogeographical implications. In Cretaceous of India (ed Maheshwari, HK), pp. 66–83. Indian Association of Palynostratigraphers Symposium, Lucknow: Birbal Sahni Institute of Palaeobotany.Google Scholar
Jaiprakash, BC, Singh, J and Raju, DSN (1993) Foraminiferal events across K/T boundary and age of Deccan volcanism in Palakollu area, Krishna-Godavari basin, India. Journal of the Geological Society of India 41, 105–17.Google Scholar
Kale, VS, Dole, G, Shandilya, P and Pande, K (2019) Stratigraphy and correlations in Deccan volcanic province, India: quo vadis? GSA Bulletin 132, 588–607.CrossRefGoogle Scholar
Kapur, VV, Bajpai, S, Saravanan, N and Das, DP (2006) Vertebrate fauna from the Deccan intertrappean beds of Bhanpura, Mandsaur District, Madhya Pradesh. Gondwana Geological Magazine 21, 43–6.Google Scholar
Keller, G, Adatte, T, Bhowmick, PK, Upadhyay, H, Dave, A, Reddy, AN and Jaiprakash, BC (2012) Nature and timing of extinctions in Cretaceous-Tertiary planktic foraminifera preserved in Deccan intertrappean sediments of the Krishna-Godavari basin, India. Earth and Planetary Science Letters 341–344, 211–21.CrossRefGoogle Scholar
Khajuria, CK, Prasad, GVR and Manhas, BK (1994) Palaeontological constraints on the age of Deccan Traps. Newsletters on Stratigraphy 31, 21–32.CrossRefGoogle Scholar
Khosla, A and Bajpai, S (2021) Dinosaur fossil records from India and their palaeobiogeographic implications: an overview. Journal of Palaeosciences 70, 193–212.CrossRefGoogle Scholar
Khosla, A, Prasad, GVR, Verma, O, Jain, AK and Sahni, A (2004) Discovery of a micromammal-yielding Deccan intertrappean site near Kisalpuri, Dindori District, Madhya Pradesh. Current Science 87, 380–3.Google Scholar
Khosla, A and Sahni, A (1995) Parataxonomic classification of Late Cretaceous dinosaur eggshells from India. Journal of the Palaeontological Society of India 40, 87–102.Google Scholar
Khosla, A and Sahni, A (2003) Biodiversity during the Deccan volcanic eruptive episode. Journal of Asian Earth Sciences 21, 895–908.CrossRefGoogle Scholar
Kohring, R (1998) Schildkriten- und Vogeleischalen aus dem Untermiozdin (MN4b) von Dolnice (Tschechien). Documenta naturae 122, 49–57.Google Scholar
Kohring, R and Hirsch, KE (1996) Crocodilian and avian eggs and egg-shells from the Eocene of the Geiseltal. Journal of Vertebrate Paleontology 16, 67–80.CrossRefGoogle Scholar
Kohring, R and Sachs, O (1997) Erhaltungsbedingungen und Diagenese fossiler Vogeleischalen aus dem Nördlinger Ries (Miozän, MN6). Archaeopteryx 15, 73–96.Google Scholar
Kohring, RR (1999) Calcified shell membranes in fossil vertebrate eggshell: evidence for preburial diagenesis. Journal of Vertebrate Paleontology 19, 723–7.CrossRefGoogle Scholar
Kolesnikov, CM and Sochava, AV (1972) A paleobiochemical study of the Cretaceous dinosaur eggshell from the Gobi. Paleontological Journal 2, 235–45.Google Scholar
Krampitz, G and Graser, G (1988) Molecular mechanisms of biomineralization in the formation of calcified shells. Angewandte Chemie International Edition in English 27, 1145–56.CrossRefGoogle Scholar
Kriwet, J, Soler-Gijón, R, López-Martínez, N (2007) Neoselachians from the upper Campanian and lower Maastrichtian (Upper Cretaceous) of the Southern Pyrenees, Northern Spain. Palaeontology 50, 1051–71.CrossRefGoogle Scholar
Kshetrimayum, DS, Parmar, V, Lourembam, RS and Prasad, GVR (2021) A diversified Ostracoda (Crustacea) assemblage from the Upper Cretaceous intertrappean beds of Gujri, Dhar District, Madhya Pradesh, India. Cretaceous Research 124. doi: 10.1016/j.cretres.2021.104784.CrossRefGoogle Scholar
Lourembam, RS, Prasad, GVR and Grover, P (2017) Ichthyofauna (Chondrichthyes, Osteichthyes) from the Upper Cretaceous intertrappean beds of Piplanarayanwar, Chhindwara District, Madhya Pradesh, India. Island Arc 26, e12200, doi: 10.1111/iar.12200.CrossRefGoogle Scholar
Mathur, SK, Mathur, SC and Loyal, RS (2006) First microvertebrate assemblage from the Fatehgarh Formation (Cretaceous), Barmer District, Western Rajasthan. Journal of the Geological Society of India 67, 759–69.Google Scholar
Mathur, UB (1968) Record of fossil Scylla serrata and its bearing on the origin of intertrappeans of Bombay. Geological Society of India Bulletin 5, 88–90.Google Scholar
Mikhailov, KE (1991) Classification of fossil eggshells of amniotic vertebrates. Acta Palaeontologica Polonica 36, 193–238.Google Scholar
Mishra, UK and Sen, S (2001) Dinosaur bones from Meghalaya. Current Science 80, 1053–6.Google Scholar
Mohabey, DM (1998) Systematics of Indian Upper Cretaceous dinosaur and chelonian eggshells. Journal of Vertebrate Paleontology 18, 348–62.CrossRefGoogle Scholar
Packard, MJ and DeMarco, VG (1995) Shell structure and formation in eggs of oviparous reptiles. In Egg Incubation: Its Effects on Embryonic Development in Birds and Reptiles (eds Deeming, CD and Ferguson, MWJ), pp. 53–70. Cambridge: Cambridge University Press.Google Scholar
Prasad, GVR (1989) Vertebrate fauna from the infra- and intertrappean beds of Andhra Pradesh: age implications. Journal of the Geological Society of India 34, 161–73.Google Scholar
Prasad, GVR (2012) Vertebrate biodiversity of the Deccan volcanic province of India: a review. Bulletin de la Société géologique de France 183, 597–610.CrossRefGoogle Scholar
Prasad, GVR and Cappetta, H (1993) Late Cretaceous selachians from India and the age of Deccan Traps. Palaeontology 36, 231–48.Google Scholar
Prasad, GVR and Khajuria, CK (1990) A record of microvertebrate fauna from the intertrappean beds of Naskal, Andhra Pradesh. Journal of the Palaeontological Society of India 35, 151–61.Google Scholar
Prasad, GVR and Khajuria, CK (1995) Implications of the infra- and inter-trappean biota from the Deccan, India, for the role of volcanism in Cretaceous-Tertiary boundary extinctions. Journal of the Geological Society of London 150, 289–96.CrossRefGoogle Scholar
Prasad, GVR and Sahni, A (1987) A coastal-plain microvertebrate assemblage from the terminal Cretaceous of Asifabad, Andhra Pradesh. Journal of the Palaeontological Society of India 32, 5–19.Google Scholar
Prasad, GVR and Sahni, A (2014) Vertebrate fauna from the Deccan volcanic province: response to volcanic activity. Geological Society of America Special Papers 505, 193–211.Google Scholar
Prasad, GVR, Verma, O, Flynn, JJ and Goswami, A (2013) A new Late Cretaceous vertebrate fauna from the Cauvery Basin, South India: implications for Gondwanan paleobiogeography. Journal of Vertebrate Paleontology 33, 1260–8.CrossRefGoogle Scholar
Prasad, V, Farooqui, A, Murthy, S, Sarate, OS and Bajpai, S (2018) Palynological assemblage from the Deccan Volcanic Province, central India: insights into early history of angiosperms and the terminal Cretaceous paleogeography of peninsular India. Cretaceous Research 86, 186–98.CrossRefGoogle Scholar
Raff, CE, Schollaerta, KL, Nelsona, DE, Donoghue, PCJ, Ceri-Wyn, T, Turnera, FR, Stein, BD, Dong, X, Bengtsone, S, Huldtgren, T, Stampanoni, M, Chongyui, Y and Raff, RA (2008) Embryo fossilization is a biological process mediated by microbial biofilms. Proceedings of the National Academy of Sciences 105, 19360–5.CrossRefGoogle ScholarPubMed
Rage, JC and Prasad, GVR (1992) New snakes from the Late Cretaceous (Maastrichtian) of Naskal, India. Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen 187, 83–97.Google Scholar
Raju, DSN, Ravichandran, CN, Dave, A, Jaiprakash, BC and Singh, J (1991) K/T boundary events in the Cauvery and Krishna-Godavari basins and age of Deccan volcanics. Geoscience Journal 12, 177–90.Google Scholar
Reid, RP, Visscher, PT, Decho, AW, Stolz, JF, Bebout, BM, Dupraz, C, Macyntyre, IG, Paerl, HW, Pinckney, JL, Prufert-Bebout, L, Steppe, TF and Des Marais, DJ (2000) The role of microbes in accretion, lamination and early lithification of modern marine stromatolites. Nature 406, 989–92.CrossRefGoogle ScholarPubMed
Reisz, RR, Huang, TD, Roberts, EM, Peng, S, Sullivan, C, Stein, K, LeBlanc, AR, Shieh, D, Chang, R, Chiang, C and Yang, C (2013) Embryology of Early Jurassic dinosaur from China with evidence of preserved organic remains. Nature 496, 210–4.CrossRefGoogle ScholarPubMed
Rothe, P and Klemmer, K (1991) Fossil eggs of terrestrial tortoises (Family Testudinidae) from Pliocene calcarenites of Fuerteventura (Canary Islands, Spain). Senckenbergiana Lethaea 71, 307–17.Google Scholar
Sahni, A (1972) Paleoecology of Lameta Formation at Jabalpur (M. P.). Current Science 41, 652.Google Scholar
Sahni, A (1983) Upper Cretaceous palaeobiogeography of Peninsular India and the Cretaceous–Paleocene transition: the vertebrate evidence. In Cretaceous of India (ed Maheshwari, HK), pp. 128–40. Indian Association of Palynostratigraphers Symposium. Lucknow: Birbal Sahni Institute of Palaeobotany. .Google Scholar
Sahni, A, Rana, RS and Prasad, GVR (1984) SEM studies of thin eggshell fragments from the intertrappeans (Cretaceous-Tertiary transition) of Nagpur and Asifabad, peninsular India. Journal of the Palaeontological Society of India 29, 26–33.Google Scholar
Sahni, A, Tandon, SK, Jolly, A, Bajpai, S, Sood, A and Srinivasan, S (1994) Upper Cretaceous dinosaur eggs and nesting sites from the Deccan volcano-sedimentary province of peninsular India. In Dinosaur Eggs and Babies (eds Carpenter, K, Hirsch, KF and Horner, JR), pp. 204–26. Cambridge: Cambridge University Press.Google Scholar
Sahni, A, Venkatachala, BS, Kar, RK, Rajnikanth, A, Prakash, T, Prasad, GVR and Singh, RY (1996) New paleontological data from the intertrappean beds: implications for the latest record of dinosaurs and synchronous initiation of volcanic activity in India. Memoirs of the Geological Society of India 37, 267–83.Google Scholar
Sahni, B (1934) The Deccan Traps: are they Cretaceous or Tertiary? Current Science 3, 134–6.Google Scholar
Samant, B, Mohabey, DM, Srivastava, P and Thakre, D (2014) Palynology and clay mineralogy of the Deccan volcanic associated sediments of Saurashtra, Gujarat: age and paleoenvironment. Journal of Earth System Science 123, 219–32.CrossRefGoogle Scholar
Sastry, MVA and Lahiri, TC (1981) Life during Deccan Trap episode. Geological Society of India Memoirs 3, 279–86.Google Scholar
Schweitzer, MH (2011) Soft tissue preservation in terrestrial Mesozoic vertebrates. Annual Review of Earth and Planetary Sciences 39, 187–216.CrossRefGoogle Scholar
Sellés, AG, Bravo, AM, Delclòs, X, Colombo, F, Martí, X, Ortega-Blanco, J, Parellada, C and Galobart, À (2013) Dinosaur eggs in the Upper Cretaceous of the Coll de Nargó area, Lleida Province, south-central Pyrenees, Spain: oodiversity, biostratigraphy and their implications. Cretaceous Research 40, 10–20.CrossRefGoogle Scholar
Shivarudrappa, TV (1976–7) Discovery of fossil reproductive organs of Chara from intertrappeans of Gurmatkal, Gulbarga District, Karnataka. Journal of Mysore University, Section B – Science 27, 104–10.Google Scholar
Simón, ME (2006) Cáscaras de huevos de dinosaurios de la Formación Allen (Campaniano-Maastrichtiano), en Salitral Moreno, provincia de Río Negro, Argentina. Ameghiniana 43, 513–28.Google Scholar
Singh, RS, Kar, R and Prasad, GVR (2006) Palynological constraints on the age of mammal yielding Deccan intertrappean beds of Naskal, Rangareddi District, Andhra Pradesh. Current Science 90, 1281–5.Google Scholar
Sochava, AV (1969) Dinosaur eggs from the Upper Cretaceous of the Gobi Desert. Paleontological Journal 3, 517–27.Google Scholar
Soler-Gijón, R and López-Martínez, N (1998) Sharks and rays (chondrichthyes) from the Upper Cretaceous red beds of the south-central Pyrenees (Lleida, Spain): indices of an India-Eurasia connection. Palaeogeography, Palaeoclimatology, Palaeoecology 141, 1–12.CrossRefGoogle Scholar
Sowerby, JC de (1840) On the fossils of the eastern portion of the great basaltic district of India. Transactions of the Geological Society of London 5, 537–75.Google Scholar
Srinivasan, S (1996) Late Cretaceous eggshells from the Deccan volcano-sedimentary sequences of central India. Memoirs of the Geological Society of India 37, 321–36.Google Scholar
Srivastava, AK and Mankar, RS (2015) Megaloolithus dinosaur nest from the Lameta Formation of Salbardi area, districts Amravati, Maharashtra and Betul, Madhya Pradesh. Journal of the Geological Society of India 85, 457–462. https://doi.org/10.1007/s12594-015-0237-0 CrossRefGoogle Scholar
Srivastava, S, Mohabey, DM, Sahni, A and Pant, SC (1986) Upper Cretaceous dinosaur egg clutches from Kheda District (Gujarat, India), their distribution, shell ultrastructure and palaeoecology. Palaeontographica, Abteilung A, Paläozoologie, Stratigraphie 193, 219–33.Google Scholar
Stein, K, Prondvai, E, Huang, T, Baele, JM, Sander, PM and Reisz, R (2019) Structure and evolutionary implications of the earliest (Sinemurian, Early Jurassic) dinosaur eggs and eggshells. Scientific Reports 9, 1–9.CrossRefGoogle ScholarPubMed
Tandon, SK, Sood, A, Andrews, JE and Dennis, PF (1995) Palaeoenvironments of the dinosaur-bearing Lameta beds (Maastrichtian), Narmada valley, central India. Palaeogeography, Palaeoclimatology, Palaeoecology 117, 153–84.CrossRefGoogle Scholar
Tazaki, K, Aratani, M, Noda, S, Currie, PJ and Fyfe, WS (1994) Microstructure and chemical composition of duckbilled dinosaur eggshell. Scientific Reports of the Kanazawa University 39, 17–37.Google Scholar
Verma, O, Khosla, A, Kaur, J and Prashanth, M (2016) Myliobatid and pycnodontid fish from the Late Cretaceous of Central India and their paleobiogeographic implications. Historical Biology 29, 253–65.CrossRefGoogle Scholar
Vianey-Liaud, M, Jain, SL and Sahni, A (1987) Dinosaur eggshells (Saurischia) from the Late Cretaceous intertrappean and Lameta formations (Deccan, India). Journal of Vertebrate Paleontology 7, 408-424.CrossRefGoogle Scholar
Vianey-Liaud, M, Hirsch, K, Sahni, A and Sigé, B (1997) Late Cretaceous Peruvian eggshells and their relationships with Laurasian and eastern Gondwanian material. Geobios 30, 75–90.CrossRefGoogle Scholar
Visscher, PT, Reid, RP and Bebout, BM (2000) Microscale observation of sulfate reduction: correlation of microbial activity with lithified micritic laminae in modern marine stromatolites. Geology 28, 919–22.2.0.CO;2>CrossRefGoogle Scholar
Whatley, R, Bajpai, S and Srinivasan, S (2002) Upper Cretaceous nonmarine Ostracoda from intertrappean horizons in Gulbarga District, Karnataka State, South India. Revista Española de Micropaleontologia 34, 163–86.Google Scholar
Yang, TR, Chen, YH, Wiemann, J, Spiering, B and Sander, PM (2018) Fossil eggshell cuticle elucidates dinosaur nesting ecology. PeerJ 6, e5144.CrossRefGoogle ScholarPubMed