Anguidae
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publication ID |
https://doi.org/10.1093/zoolinnean/zlz035 |
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persistent identifier |
https://treatment.plazi.org/id/9C298799-D26E-5A16-FF2D-FBE022CCAC70 |
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treatment provided by |
Plazi |
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scientific name |
Anguidae |
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Anguidae View in CoL View at ENA ( Figs 27Q–T View Figure 27 , 28O–R View Figure 28 )
In European anguids, the pterygoid has a long, slender and pointed palatine process. Both margins of this process are straight, but the lateral one can have some irregularities. The pterygoid flange is distinctly shorter (roughly half the length of the palatine process) and very slender, with a very prominent dorsal ridge. The ventral ridge is poorly developed in Anguis gr. An. fragilis ( Fig. 27R View Figure 27 ), but well developed in Pseudopus apodus ( Fig. 27T View Figure 27 ). The pterygoid recess is wide, deep and U-shaped in dorsal view. The long and straight quadrate process is pointed in both dorsal and lateral views. The fossa columellae is wide and deep, whereas the basipterygoid fossa is flattened, but marked by flanges both dorsally and ventrally. The flanges are moderately developed and rounded, except for the ventral one of Pseudopus apodus [the basisphenoid process of Klembara et al. (2010)], which is longer and thumb-like ( Fig. 27S, T View Figure 27 ). The pterygoid ridge can be low or moderately developed. Pterygoid teeth are absent in Anguis gr. An. fragilis ( Fig. 27R View Figure 27 ), but present in Pseudopus apodus ( Fig. 27T View Figure 27 ). The maximum length of the pterygoid of Anguis gr. An. fragilis ranges from 6 mm to 10.6 mm, whereas it varies from 13 mm to more than 20 mm in Pseudopus apodus .
ECTOPTERYGOID
The ectopterygoid ( Fig. 29 View Figure 29 ) is a small and paired bone, the morphology of which varies greatly among different groups.
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