Anagram & Information om | Engelska ordet ANASPIDS

Exempel på hur man kan använda ANASPIDS i en mening

• In the 1920s, the biologists Johan Kiær and Erik Stensiö first recognized the Cephalaspidomorphi as including the osteostracans, anaspids, and lampreys, because all three groups share a single dorsal "nostril", now known as a nasohypophysial opening.
• The term does not often appear in classifications today because it is paraphyletic (excluding jawed fishes) (may also be polyphyletic if anaspids are closer to cyclostomes) and thus does not correspond to one evolutionary lineage.
• Remains of acanthodians, anaspids, heterostracans, osteostracans, thelodonts and bivalves have also been found in the same sediment layers.

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