Publications in peer-reviewed scientific journals

2024

Rytel, A., Surmik, D., Szczygielski, T., Spiekman, S.N.F., Van de Kamp, T., Zuber, M., Scheyer, T.M., 2024. Unique internal anatomy of vertebrae as a key factor for neck elongation in Triassic archosauromorphs. Zoological Journal of the Linnean Society 202(3): zlae126. https://doi.org/10.1093/zoolinnean/zlae126

 

Spiekman, S.N.F., Butler, R.J., Maidment, S.C.R., 2024. The postcranial anatomy and osteohistology of Terrestrisuchus gracilis (Archosauria, Crocodylomorpha) from the Late Triassic of Wales. Papers in Palaeontology 10(4): e1577. https://doi.org/10.1002/spp2.1577

 

Sues, H.-D., Spiekman, S.N.F., Schoch, R.R., 2024. Osteology and phylogenetic relationships of a new archosauriform reptile from the early Middle Triassic (Anisian) of Germany. Journal of Vertebrate Paleontology: 43(6): e2357326. https://doi.org/10.1080/02724634.2024.2357326

 

Rytel, A., Böhmer, C., Spiekman, S.N.F., Tałanda, M., 2024. Extreme neck elongation evolved despite strong developmental constraints in bizarre Triassic reptiles — implications for neck modularity in archosaurs. Royal Society Open Science 11: 240233. https://doi.org/10.1098/rsos.240233

Spiekman, S.N.F., Ezcurra, M.D., Rytel, A., Wang, W., Mujal, E., Buchwitz, M., Schoch, R.R., 2024. A redescription of Trachelosaurus fischeri from the Buntsandstein (Middle Triassic) of Bernburg, Germany: the first European Dinocephalosaurus-like marine reptile and its systematic implications for long-necked early archosauromorphs. Swiss Journal of Palaeontology 143(10). https://doi.org/10.1186/s13358-024-00309-6

 

Klug, C., Spiekman, S.N.F., Bastiaans, D., Scheffold, B., Scheyer, T.M., 2024. The marine conservation deposits of Monte San Giorgio (Switzerland, Italy) – the prototype of Triassic black shale Lagerstätten. Swiss Journal of Palaeontology 143 (10). https://doi.org/10.1186/s13358-024-00308-7

 

Spiekman, S.N.F., Wang, W., Zhao, L., Rieppel, O., Fraser, N.C., Chun, L., 2024. Dinocephalosaurus orientalis Li, 2003: a remarkable marine archosauromorph from the Middle Triassic of Southwestern China. Earth and Environmental Science Transactions of the Royal Society of Edinburgh. https://doi.org/10.1017/S175569102400001X

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2023

Spiekman, S.N.F., Fernandez, V., Butler, R.J., Dollman, K.N., Maidment, S.C.R., 2023. A taxonomic revision and cranial description of Terrestrisuchus gracilis (Archosauria, Crocodylomorpha) from the Upper Triassic of Pant-y-Ffynnon Quarry (southern Wales). Papers in Palaeontology 9(6): e1534 https://doi.org/10.1002/spp2.1534

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Spiekman, S.N.F. and Mujal, E., 2023. Decapitation in the long-necked Triassic marine reptile Tanystropheus. Current Biology 33(13): PR708-R709. https://doi.org/10.1016/j.cub.2023.04.027

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Spiekman, S.N.F., 2023. A revision and histological investigation of Saltoposuchus connectens (Archosauria: Crocodylomorpha) from the Norian (Late Triassic) of south-western Germany. Zoological Journal of the Linnean Society 199(2): 354-391. https://doi.org/10.1093/zoolinnean/zlad035

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Wang, W., Spiekman, S.N.F., Zhao, L., Rieppel, O., Scheyer, T.M., Fraser, N.C., Li, C., 2023. A new long-necked archosauromorph from the Guanling Formation (Anisian, Middle Triassic) of southwestern China and its implications for neck evolution in tanystropheids. The Anatomical Record. https://doi.org/10.1002/ar.25216

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2021

Spiekman, S.N.F. and Klein, N., 2021. An enigmatic lower jaw from the Lower Muschelkalk (Anisian, Middle Triassic) of Winterswijk provides insights into dental configuration, tooth replacement and histology. Netherlands Journal of Geosciences 100: e17. https://doi.org/10.1017/njg.2021.12

 

Spiekman, S.N.F., Ezcurra, M.D., Butler, R.J., Fraser, N.C., Maidment, S.C.R., 2021. Pendraig milnerae, a new small-sized coelophysoid theropod from the Late Triassic of Wales. Royal Society Open Science 8(10): 210915. https://royalsocietypublishing.org/doi/full/10.1098/rsos.210915

 

Bakker, M.A.G., Van der Vos, W., De Jager, K., Chung, W-Y., Fowler, D.A., Dondorp, E., Spiekman, S.N.F., Chew, K-Y., Jiménez, R., Bickelmann, C., Kuratani, S., Blazek, R., Kondrashov, P., Renfree, M.B., Richardson, M.K., 2021. Selection on phalanx development in the evolution of the bird wing. Molecular Biology and Evolution 38(10): 4222-4237. https://academic.oup.com/mbe/article/38/10/4222/6308563

 

Spiekman, S.N.F., Fraser, N.C., and Scheyer, T.M., 2021. A new phylogenetic hypothesis of Tanystropheidae (Diapsida, Archosauromorpha) and other “protorosaurs”, and its implications for the early evolution of stem archosaurs. PeerJ 9, 1-174. DOI: 10.7717/peerj.11143 https://peerj.com/articles/11143/

 

2020

Spiekman, S.N.F., Neenan, J.M., Fraser, N.C., Fernandez, V., Rieppel, O., Nosotti, S., and Scheyer, T.M., 2020. The cranial morphology of Tanystropheus hydroides (Tanystropheidae, Archosauromorpha) as revealed by synchrotron microtomography. PeerJ 8, 1-76. DOI: 10.7717/peerj.10299 https://peerj.com/articles/10299/

 

Spiekman, S.N.F., Neenan, J.M., Fraser, N.C., Fernandez, V., Rieppel, O., Nosotti, S., and Scheyer, T.M., 2020. Aquatic Habits and Niche Partitioning in the Extraordinarily Long-Necked Triassic Reptile Tanystropheus. Current Biology 30(19), 3889-3895. DOI: 10.1016/j.cub.2020.07.025 https://www.sciencedirect.com/science/article/pii/S0960982220310174

 

Miedema, F., Spiekman, S.N.F., Fernandez, V., Reumer, J.W.F., and Scheyer, T.M., 2020. Cranial morphology of the tanystropheid Macrocnemus bassanii unveiled using synchrotron microtomography. Scientific Reports 10: 12412 https://www.nature.com/articles/s41598-020-68912-4?fbclid=IwAR2h0IzyRHRUcDQLJBJWUL-vuKgYOOoaYKg-KrAmQJi_Dpt2ENWisY6vygM

 

Scheyer, T.M., Wang, W., Li, C., Miedema, F., and Spiekman, S.N.F., 2020. Osteological re-description of Macrocnemus fuyuanensis (Archosauromorpha, Tanystropheidae) from the Middle Triassic of China. Vertebrata Palasiatica 58(3): 169-187. https://www.researchgate.net/publication/341643337_Osteological_re-description_of_Macrocnemus_fuyuanensis_Archosauromorpha_Tanystropheidae_from_the_Middle_Triassic_of_China

 

Scheyer, T.M., Spiekman, S.N.F., Sues, H.-D., Ezcurra, M.D., Butler, R.J., and Jones, M.E.H, 2020. Colobops, a juvenile rhynchocephalian reptile (Lepidosauromorpha), not a diminutive archosauromorph with an unusually strong bite. Royal Society Open Science 7(3). https://royalsocietypublishing.org/doi/full/10.1098/rsos.192179

 

2019

Spiekman, S.N.F. and Scheyer, T. M., 2019. A taxonomic revision of the genus Tanystropheus (Archosauromorpha, Tanystropheidae). Palaeontologia Electronica 22, 1-46. https://palaeo-electronica.org/content/2019/2870-revision-of-tanystropheus

 

Spiekman, S.N.F., Winkelhorst, H., Bleeker, R., Dorst, M., de Haan, R., and Voeten, D.F.A.E., 2019. Tanystropheids from the Winterswijkse Steengroeve – rare but recurring elements in the Vossenveld paleoassemblage. Grondboor & Hamer (Staringia 16), 73(5/6): 208-215. https://www.zora.uzh.ch/id/eprint/182944/

 

2018

Spiekman, S.N.F., 2018. A new specimen of Prolacerta broomi from the lower Fremouw Formation (Early Triassic) of Antarctica, its biogeographical implications and a taxonomic revision. Scientific Reports, 8(1):17996. https://www.nature.com/articles/s41598-018-36499-6

 

2017

Spiekman, S.N.F. and Werneburg, I., 2017. Patterns in the bony skull development of marsupials: high variation in onset of ossification and conserved regions of bone contact. Scientific Reports 7: 43197. https://www.nature.com/articles/srep43197/