Taphonomy and Paleoecology of Lycoptera: A Case Study from the Lower Jehol Group in Western Liaoning, Northeastern China

Abstract

Taphonomy and paleoecology (biological behavior) of the Early Cretaceous fish fossils are poorly described. This study reports for the first time a detailed taphonomical and paleoecological study on Lycoptera in the Mesozoic strata of western Liaoning Province, NE China. The XRD analysis shows that gismondine is the dominant clay minerals that could have contributed to the preservation of Lycoptera fossils and microbial mat fragments in the fossil-bearing horizon. Gismondine may have formed under volcanism-related hydrothermal regime that was transformed from crystal and lithic fragments. The μ-XRF imaging analysis shows a dominant chemical composition of Al, Si, P, S, Rh, K, Ca, Ti, C, Cr, Mn, Fe, Ni, among which P, Ca, C and S are enriched in the fish skeleton in comparison to the matrix. This suggests a dominant apatite composition for the fish skeleton. Hydrothermal influence did not smear off these organic signals probably because of protection of gismondine. The coexistance of C and S with Ni is assumed to represent recovered primary productivity following volcanic explosions and toxic gas emissions. The head of juvenile fish stays close to the body of adult fish. Pending further discoveries, such phenomenon is interpreted to suggest that adult fish actively protected juvenile fish in the presence of environmental pressures such as anoxia and deterioration of water quality induced by volcanism. Ocean acidification and hypoxia in association with volcanism created a harmful environment causing mass extinction of fish. The adult Lycoptera protected their juveniles by its body at the moment before death. Such biological behavior will be increasingly reported given the wide occurrence of Lycoptera in Mesozoic strata.

Keywords

Lycoptera / taphonomy / paleoecology / fish / Jehol Group / NE China

References

[1] Benton M J, Zhou Z H, Orr P J, . The Remarkable Fossils from the Early Cretaceous Jehol Biota of China and how They have Changed Our Knowledge of Mesozoic Life. Proceedings of the Geologists’ Association, 2008, 119(3/4): 209-228.

[2] Chang M M, Miao D S. Arratia G, Tintori A. An Overview of Mesozoic Fishes in Asia. Mesozoic Fishes 3—Systematics, Paleoenvironments and Biodiversity, 2004, Munchen: Verlag Dr. F. Pfeil, 535-563

[3] Chen Y Y, Li X B, Teng F F, . Micro-XRF Mapping Study on the Taphonomy of a Jurassic Larval Salamander Fossil from Inner Mongolia of China. Atomic Spectroscopy, 2023, 44: 24-31.

[4] Fan Q G, Liu D, Papineau D, . Precipitation of High Mg-Calcite and Protodolomite Using Dead Biomass of Aerobic Halophilic Bacteria. Journal of Earth Science, 2023, 34(2): 456-466.

[5] Fan R Y, Zong R W, Gong Y M. Fish Swimming Traces from the Upper Devonian of Wuhan, South China. Journal of Earth Science, 2023, 34(4): 1319-1322.

[6] Ghobarkar H, Schäf O. Synthesis of Gismondine-Type Zeolites by the Hydrothermal Method. Materials Research Bulletin, 1999, 34(4): 517-525.

[7] Guo Z F, Wang X L. A Study on the Relationship between Volcanic Activities and Mass Mortalities of the Jehol Vertebrate Fauna from Sihetun, Western Liaoning, China. Acta Petrologica Sinica, 2002, 18(1): 117-125. (in Chinese with English Abstract)

[8] Guo Z F, Liu J Q, Wang X L. Effect of Mesozoic Volcanic Eruptions in the Western Liaoning Province, China on Paleoclimate and Paleoenvironment. Science in China Series D: Earth Sciences, 2003, 46(12): 1261-1272.

[9] Jiang B Y, Harlow G E, Wohletz K, . New Evidence Suggests Pyroclastic Flows are Responsible for the Remarkable Preservation of the Jehol Biota. Nature Communications, 2014, 5: 3151

[10] Jiang B Y, Sha J G. Preliminary Analysis of the Depositional Environments of the Lower Cretaceous Yixian Formation in the Sihetun Area, Western Liaoning, China. Cretaceous Research, 2007, 28(2): 183-193.

[11] Jin F, Zhang J Y, Zhou Z H. Late Mesozoic Fish Fauna from Western Liaoning, China. Vertebrata Palasiatica, 1995, 33(3): 191-193. (in Chinese with English Abstract)

[12] Konhauser K O, Pecoits E, Lalonde S V, . Oceanic Nickel Depletion and a Methanogen Famine before the Great Oxidation Event. Nature, 2009, 458 750-753.

[13] Lan Z W, Li X H, Chu X L, . SIMS U-Pb Zircon Ages and Ni-Mo-PGE Geochemistry of the Lower Cambrian Niutitang Formation in South China: Constraints on Ni-Mo-PGE Mineralization and Stratigraphic Correlations. Journal of Asian Earth Sciences, 2017, 137: 141-162.

[14] Lan Z W, Chen Z Q. Possible Animal Body Fossils from the Late Neoproterozoic Interglacial Successions in the Kimberley Region, Northwestern Australia. Gondwana Research, 2012, 21(1): 293-301.

[15] Lan Z W, Zhang S J, Tucker M, . Evidence for Microbes in Early Neoproterozoic Stromatolites. Sedimentary Geology, 2020, 398: 105589

[16] Li S, Zheng D R, Zhang Q, . Discovery of the Jehol Biota from the Celaomiao Region and Discussion of the Lower Cretaceous of the Bayingebi Basin, Northwestern China. Palaeoworld, 2016, 25(1): 76-83.

[17] Li X B, Reisz R. The Stratigraphy and Paleoenvironment of a ‘Lycoptera Bed’ Site in Eastern Inner Mongolia, China: Correlation with the Fossiliferous Lower Cretaceous Strata in Western Liaoning. Palaeogeography Palaeoclimatology Palaeoecology, 2020, 559 109951

[18] Li Y J, Jicha B R, Yu Z Q, . Rapid Preservation of Jehol Biota in Northeast China from High Precision ⁴⁰Ar/³⁹Ar Geochronology. Earth and Planetary Science Letters, 2022, 594 117718

[19] Moore D M, Reynolds R C. X-Ray Diffraction and the Identification and Analysis of Clay Minerals, 1989, Oxford: Oxford University Press, 322

[20] Muyzer G, Stams A J M. The Ecology and Biotechnology of Sulphate-Reducing Bacteria. Nature Reviews Microbiology, 2008, 6 441-454.

[21] Pan Y H, Fürsich F T, Zhang J Y, . Biostratinomic Analysis of Lycoptera Beds from the Early Cretaceous Yixian Formation, Western Liaoning, China. Palaeontology, 2015, 58(3): 537-561.

[22] Peng S Z, Hao Q Z, Oldfield F, . Release of Iron from Chlorite Weathering and Links to Magnetic Enhancement in Chinese Loess Deposits. Catena, 2014, 117: 43-49.

[23] Rogers C S, Hone D W E, McNamara M E, . The Chinese Pompeii? Death and Destruction of Dinosaurs in the Early Cretaceous of Lujiatun, NE China. Palaeogeography, Palaeoclimatology, Palaeoecology, 2015, 427: 89-99.

[24] Sano Y, Terada K. Direct Ion Microprobe U-Pb Dating of Fossil Tooth of a Permian Shark. Earth and Planetary Science Letters, 1999, 174(1/2): 75-80.

[25] Sano Y, Terada K. In situ Ion Microprobe U-Pb Dating and REE Abundances of a Carboniferous Conodont. Geophysical Research Letters, 2001, 28(5): 831-834.

[26] Sar A, Kürüm S, Bingöl A F. Early Cretaceous to Middle Eocene Magmatic Evolution of Eastern Pontides: Zircon U-Pb Ages and Hf Isotopes, and Geochemical and Sr-Nd Isotopic Constraints from Multiphase Granitoids, NE Turkey. Journal of Earth Science, 2023, 34(2): 518-535.

[27] Scheller S, Goenrich M, Boecher R, . The Key Nickel Enzyme of Methanogenesis Catalyses the Anaerobic Oxidation of Methane. Nature, 2010, 465: 606-608.

[28] Sha J G. Cretaceous Stratigraphy of Northeast China: Non-Marine and Marine Correlation. Cretaceous Research, 2007, 28(2): 146-170.

[29] Wang W, Guan C, Zhou C, . Exceptional Preservation of Macrofossils from the Ediacaran Lantian and Miaohe Biotas, South China. Palaios, 2014, 29(3): 129-136.

[30] Wang X L, Li Y, Qiu R, . Comparison of Biodiversity of the Early Cretaceous Pterosaur Faunas of China. Earth Science Frontiers, 2020, 27(6): 347-364. (in Chinese with English Abstract)

[31] Wang Y Q, Olsen P E, Sha J G, . Stratigraphy, Correlation, Depositional Environments, and Cyclicity of the Early Cretaceous Yixian and? Jurassic-Cretaceous Tuchengzi Formations in the Sihetun Area (NE China) Based on Three Continuous Cores. Palaeogeography, Palaeoclimatology, Palaeoecology, 2016, 464: 110-133.

[32] Xiao S H, Schiffbauer J D. Seckbach J, Walsh M. Microfossil Phosphatization and Its Astrobiological Implications. Cellular Origin, Life in Extreme Habitats and Astrobiology, 2009, Dordrecht: Springer Netherlands, 89-117

[33] Xiang X, Wang H M, Tian W, . Composition and Function of Bacterial Communities of Bryophytes and Their Underlying Sediments in the Dajiuhu Peatland, Central China. Journal of Earth Science, 2023, 34(1): 133-144.

[34] Yuan X L, Chen Z, Xiao S H, . An Early Ediacaran Assemblage of Macroscopic and Morphologically Differentiated Eukaryotes. Nature, 2011, 470: 390-393.

[35] Zhang F C, Kearns S L, Orr P J, . Fossilized Melanosomes and the Colour of Cretaceous Dinosaurs and Birds. Nature, 2010, 463(7284): 1075-1078.

[36] Zhang J Y. A New Species of Lycoptera from Liaoning, China. Vertebrata Palasiatica, 2002, 40(4): 257-266. (in Chinese with English Abstract)

[37] Zhao Q, Barrett P M, Eberth D A. Social Behaviour and Mass Mortality in the Basal Ceratopsian Dinosaur Psittacosaurus (Early Cretaceous, People’s Republic of China). Palaeontology, 2007, 50(5): 1023-1029.

[38] Zhao Z Q, Shen B, Zhu J M, . Active Methanogenesis during the Melting of Marinoan Snowball Earth. Nature Communications, 2021, 12: 955

[39] Zhou Z H, Barrett P M, Hilton J. An Exceptionally Preserved Lower Cretaceous Ecosystem. Nature, 2003, 421 807-814.

[40] Zhou Z H. The Jehol Biota, an Early Cretaceous Terrestrial Lagerstätte: New Discoveries and Implications. National Science Review, 2014, 1(4): 543-559.

[41] Zhou Z H, Wang Y. Vertebrate Assemblages of the Jurassic Yanliao Biota and the Early Cretaceous Jehol Biota: Comparisons and Implications. Palaeoworld, 2017, 26(2): 241-252.

[42] Zhu M, Zhu Y A, Gai Z K, . How did Jawed Vertebrates Originate and Rise?. Journal of Earth Science, 2023, 34(4): 1299-1301.