1. Bacteria & Fungi
👉 Actinomycetes

2. Reptiles & Birds
👉 Archaeopteryx

3. Chordates & Non-chordates
👉 Balanoglossus

4. Cartilaginous & Bony fishes
👉 Chimera (Rabbit fish/Ratfish)

5. Bryophytes & Pteridophytes
👉 Club moss

6. Coelenterates & Platyhelminthes
👉 Ctenophora

7. Pteridophytes & Gymnosperms
👉 Cycas

8. Reptiles & Mammals
👉 Echidna (Spiny ant eater)

9. Animals & Plants
👉 Euglena

10. Gymnosperms & Angiosperms
👉 Gnetum

11. Protista & Bryophytes
👉 Hornworts

12. Pisces & Amphibia
👉 Latimeria

13. Protista & Fungi
👉 Myxomycetes

14. Annelida & Mollusca
👉 Neopilina

15. Reptiles & Mammals
👉 Ornithorhynchus (Duck billed platypus)

16. Annelida & Arthropoda
👉 Peripatus (walking worm)

17. Protozoa & Porifera
👉 Proterospongia

18. Bony fishes & Amphibia
👉 Protopterus (Lung fishes)

19. Virus & Bacteria
👉 Rickettsia

20. Amphibia & Reptiles
👉 Seymouria

21. Amphibia & Reptilia
👉 Sphenodon (Living fossil lizard)

22. Echinodermata & Chordata
👉 Tornaria larva

23. Annelida & Mollusca
👉 Trochophore larva

24. Living & non-living
👉 Virus

25. Protozoa & Metazoa
👉 Xenoturbella