''Quadratapora'' is a genus of

lobopodia Lobopodians are members of the informal group Lobopodia (), or the formally erected phylum Lobopoda Cavalier-Smith (1998). They are panarthropods with stubby legs called lobopods, a term which may also be used as a common name of this group as ...

n known only from its biomineralized

dorsal Dorsal (from Latin ''dorsum'' ‘back’) may refer to: * Dorsal (anatomy), an anatomical term of location referring to the back or upper side of an organism or parts of an organism * Dorsal, positioned on top of an aircraft's fuselage The fus ...

plates Plate may refer to: Cooking * Plate (dishware), broad, mainly flat vessel commonly used to serve food * Plates, tableware, dishes or dishware used for setting a table, serving food and dining * Plate, the content of such a plate (for example: ...

, which somewhat resemble those of ''

Microdictyon is an extinct genus of lobopodian worm characterized by its net-like sclerite armour plates, known from Cambrian deposits around the world. Soft-bodied fossils which preserve more than the sclerites are only known from the Chengjiang Lagerst� ...

''. ''Q. tenuiporatum'' is known from a single specimen that was initially described as dating to the

Tommotian Stage 2 of the Cambrian is the unnamed upper stage of the Terreneuvian Series. It lies atop the Fortunian and below Stage 3 of the Cambrian. It is commonly referred to as the Tommotian, after the Cambrian stratigraphy of Siberia. Neither the uppe ...

, representing (perhaps along with '' Rhombocorniculum'') the earliest record of lobopodians. However, the material is now thought to be Atdabainan in age, reflecting both a mistake in the initial description of the material and a revision of the stratigraphy of the Isit section on the Lena river, from where the single specimen heralds. ''Q. zhenbaensis'' is Atdabanian in age.

References

Cambrian animals Lobopodia Prehistoric protostome genera {{paleo-protostome-stub