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Dr. Alexey Yakovlev: Tutufa bufo (Bursidae)
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Dr. Alexey Yakovlev: Tutufa bardayi (Bursidae)
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Dr. Alexey Yakovlev: Tutufa bardayi (Bursidae)
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Dr. Alexey Yakovlev: Tutufa tenuigranosa (Bursidae)
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Dr. Alexey Yakovlev: Bursa lamarckii (Bursidae)
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Dr. Alexey Yakovlev: Bursa latitudo (Bursidae)
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Dr. Alexey Yakovlev: Tutufa rubeta (Bursidae)
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Dr. Alexey Yakovlev: Tutufa rubeta (Bursidae)
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Dr. Alexey Yakovlev: my bursids (Frog shells) - Bursidae
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Dr. Alexey Yakovlev: Auger Shells (Terebridae) on post stamps
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Dr. Alexey Yakovlev: Philippine Auger Shells (Terebridae)
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Dr. Alexey Yakovlev: Philippine Auger Shells (Terebridae)
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Dr. Alexey Yakovlev: Turritella terebra (Thailand, Sapam Bay) and T. goniostoma (Mexico, Sonora)