Compluriscutula vetulum , n. gen., n. sp. (Acari: Ixodida: Ixodidae), is described from Lower Cretaceous Burmese amber. Diagnostic characters include a circular body, thirteen festoons, elongate 4-segmented palpi with the fourth segment distinct and subapical, the absence of eyes and an anal groove, and the presence of 3–4 uneven rows of 2/2 unequal teeth located on the anterior half of the hypostome. The larger teeth are covered with minute denticles. This is the third genus of hard ticks reported from Burmese amber, showing that a high level of tick diversity existed 100 mya.
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