| Basidechenella arkonensis Hungry Hollow Mb., Widder Fm. Arkona, Ontario, Canada This piece has two trilobites a gastropod and a blastoid at the top between the trilobites. Size: 2.8 cm for the left specimen. | 
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| Basidechenella arkonensis Hungry Hollow Mb., Widder Fm. Arkona, Ontario, Canada This piece has two trilobites a gastropod and a blastoid at the top between the trilobites. Size: 2.8 cm for the left specimen. |
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