Observations on the dental morphology of the North African Sandfish Scincus scincus (Squamata: Scincidae)
DOI:
https://doi.org/10.11609/jott.10287.18.9.29772-29775Keywords:
Cranial elements, dentition, feeding ecology, generalize functional, sandfish skink, scanning electron microscopy, structural features of teethAbstract
The dental morphology of the North African Sandfish Lizard Scincus scincus (Linnaeus, 1858) was studied using field emission scanning electron microscopy. The primary aim of the study was to observe structural features of teeth in the species and generalize functional adaptations with respect to its feeding ecology. Specimens were euthanized, decapitated, the cranial removed and tissues macerated, using standard protocols. Cranial elements, including maxillary and mandibular elements were prepared separately using an ethanol series, critically point-dried, and examined under an electron microscope. S. scincus exhibits monostichous, bicuspid, sub-equal, sub-conical, posteriorly-oriented mandibular, and maxillary teeth rows comprising of faint ridges. The dentition appeared to mirror a predator of arthropods, as in a majority of members of the lineage, in addition to adaptations for larger prey, such as small vertebrates.
References
Al-Johany, A.M.H. et al. (2021). Scincus scincus. The IUCN Red List of Threatened Species 2021: e.T164624A1062266. https://doi.org/10.2305/IUCN.UK.2021-1.RLTS.T164624A1062266.en. Accessed on 01.08.2026.
Attum, O. et al. (2004). The comparative diet of three Saharan sand dune skinks. African Journal of Herpetology 53(1): 91–94. https://doi.org/10.1080/21564574.2004.9635501
Attum, O. et al. (2006). Morphology, niche segregation, and escape tactics in a sand dune lizard community. Journal of Arid Environments 68(4): 564–573. https://doi.org/10.1016/j.jaridenv.2006.07.010
Bhattacharya, S. & I. Das (2026). Comparative dental morphology in sympatric Bornean Eutropis (Squamata: Sauria: Scincidae). Journal of Natural History 60(13–16): 809–822. https://doi.org/10.1080/00222933.2026.2642869
Caputo, V. (2004). The cranial osteology and dentition in the scincid lizards of the genus Chalcides (Reptilia, Scincidae). Italian Journal of Zoology 71(Sup. 2): 35–45. https://doi.org/10.1080/11250000409356604
Čerňanský, A. et al. (2019). The key to understanding the European Miocene Chalcides (Squamata, Scincidae) comes from Asia: the lizards of the East Siberian Tagay locality (Baikal Lake) in Russia. The Anatomical Record 303(7): 1901–1934. https://doi.org/10.1002/ar.24289
Christensen, K. & K.M. Melstrom (2021). Quantitative analyses of squamate dentition demonstrate novel morphological patterns. PLoS One 16(9): e0257427. https://doi.org/10.1371/journal.pone.0257427
Das, I. & M. Coe (1994). Dental morphology and diet in anuran amphibians from south India. Journal of Zoology 233(3): 417–427. https://doi.org/10.1111/j.1469-7998.1994.tb05274.x
Delgado, S. et al. (2003). Dentition and tooth replacement pattern in Chalcides (Squamata; Scincidae). Journal of Morphology 256(2): 146–159. https://doi.org/10.1002/jmor.10080
Greer, A.E. (2007). The Biology of scincid lizards. Unpublished manuscript online. https://www.academia.edu/35305801/The_Biology_and_Evolution_of_Scincid_Lizard s_doc
Hetherington, T.E. (1992). Behavioural use of seismic cues by the sand swimming lizard Scincus scincus. Ethology Ecology & Evolution 4(1): 5–14. https://doi.org/10.1080/08927014.1992.9525346
Kosma, R. (2004). The dentition of recent and fossil scincomorphan lizards (Lacertilia, Squamata) – systematics, functional morphology, palecology. Unpublished doctoral dissertation, University of Braunschweig, Braunschweig, Germany 187pp+36 pl and captions.
Melstrom, K.M. (2017). The relationship between diet and tooth complexity in living dentigerous saurians. Journal of Morphology 278(4): 500–522. https://doi.org/10.1002/jmor.20645
Melville, J. & R.O.Y. Swain (2000). Evolutionary relationships between morphology, performance and habitat openness in the lizard genus Niveoscincus (Scincidae: Lygosominae). Biological Journal of the Linnean Society 70(4): 667–683. https://doi.org/10.1006/bijl.1999.0422
Razmadze, D. et al. (2024). Squamates as a model to understand key dental features of vertebrates. Developmental Biology 516: 1–19. https://doi.org/10.1016/j.ydbio.2024.07.011
Salem, S. et al. (2017). Comparative histological characterization of the tongue in two reptiles, Scincus scincus (Scincidae) and Uromastyx ornata (Agamidae) in relation to diet. The Egyptian Journal of Experimental Biology (Zoology) 13(2): 319–327. https://doi.org/10.5455/egysebz.20171214034607
Schleich, H. et al. (1996). Amphibians and reptiles of North Africa: Biology, systematics, field guide. S. Koeltz Verlag, Koenigstein, 630 pp.
Šmíd, J. et al. (2021). Swimming through the sands of the Sahara and Arabian deserts: Phylogeny of sandfish skinks (Scincidae, Scincus) reveals a recent and rapid diversification. Molecular Phylogenetics and Evolution 155: 107012. https://doi.org/10.1016/j.ympev.2020.107012
Stadler, A.T. et al. (2016). Adaptation to life in aeolian sand: how the sandfish lizard, Scincus scincus, prevents sand particles from entering its lungs. Journal of Experimental Biology 219(22): 3597–3604. https://doi.org/10.1242/jeb.138107
Townsend, V.R. et al. (1999). Dentition of the Ground Skink, Scincella lateralis (Sauria, Scincidae). Copeia 1999(3): 783–788. https://doi.org/10.2307/1447615
Uetz, P. et al. (2026). The Reptile Database. http://www.reptile-database.org. Accessed 1 August 2026.
Published
Issue
Section
License
Copyright (c) 2026 Shreya Bhattacharya, Indraneil Das

This work is licensed under a Creative Commons Attribution 4.0 International License.
Authors own the copyright to the articles published in JoTT. This is indicated explicitly in each publication. The authors grant permission to the publisher Wildlife Information Liaison Development (WILD) Society to publish the article in the Journal of Threatened Taxa. The authors recognize WILD as the original publisher, and to sell hard copies of the Journal and article to any buyer. JoTT is registered under the Creative Commons Attribution 4.0 International License (CC BY), which allows authors to retain copyright ownership. Under this license the authors allow anyone to download, cite, use the data, modify, reprint, copy and distribute provided the authors and source of publication are credited through appropriate citations (e.g., Son et al. (2016). Bats (Mammalia: Chiroptera) of the southeastern Truong Son Mountains, Quang Ngai Province, Vietnam. Journal of Threatened Taxa 8(7): 8953–8969. https://doi.org/10.11609/jott.2785.8.7.8953-8969). Users of the data do not require specific permission from the authors or the publisher.


