ORGANISMS
MICROORGANISMS
VIRUSES
Viruses-General
Bacterial Viruses
Animal Viruses
Plant Viruses
BACTERIA
Bacteria-General
Spirochetes
Aerobic Helical or Vibrioid
Gram-Negatives
Mostly Nonmotile Curved
Gram-Negatives
Gram-Negative Aerobic Rods
and Cocci
Facultatively Anaerobic Gram-
Negative Rods
Dissimilatory Sulfate or Sulfur
Reducers
Anaerobic Gram-Negative Rods
Anaerobic Gram-Negative Cocci
Rickettsias and Chlamydias
Mycoplasmas
Endosymbionts
Gram-Positive Cocci
Endospore-Forming Gram-
Positives
Regular Nonsporing Gram-
Positive Rods
Anoxygenic Phototrophic
Bacteria
Aerobic Chemolithotrophs and
Similar Bacteria
Budding and Appendaged
Bacteria
Sheathed Bacteria
Nonfruiting Gliding Bacteria
Fruiting Gliding Bacteria The
Myxobacteria
Actinomycetes and Related
Genera
Oxygenic Photosynthetic
Bacteria
Archaeobacteria
PLANTAE
CRYPTOGAMAE
ALGAE
FUNGI
LICHENES
EMBRYOPHYTA
BRYOPHYTA
TRACHEOPHYTA
PTERIDOPHYTA
SPERMATOPHYTA
GYMNOSPERMAE
ANGIOSPERMAE
Monocotyledones
Dicotyledones
ANIMALIA
INVERTEBRATA
PROTOZOA
METAZOA
MESOZOA
PORIFERA
CNIDARIA
CTENOPHORA
HELMINTHES
PLATYHELMINTHES
RHYNCHOCOELA
ACANTHOCEPHALA
ASCHELMINTHES
ENTOPROCTA
PHORONIDEA
ECTOPROCTA
BRACHIOPODA
MOLLUSCA
SIPUNCULOIDEA
ANNELIDA
ECHIUROIDEA
LINGUATULIDA
TARDIGRADA
ONYCHOPHORA
ARTHROPODA
Crustacea
Myriapoda
Insecta
Chelicerata
CHAETOGNATHA
HEMICHORDATA
POGONOPHORA
ECHINODERMATA
CHORDATA
PROTOCHORDATA
VERTEBRATA
PISCES
AMPHIBIA
REPTILIA
AVES
MAMMALIA
Artiodactyla
* Astrapotheria
Carnivora
Cetacea
Chiroptera
* Condylarthra
Dermoptera
* Dinocerata
Edentata
* Embrithopoda
Hyracoidea
Insectivora
Lagomorpha
* Litopterna
Marsupialia
Monotremata
* Multituberculata
* Notoungulata
* Pantodonta
* Pantotheria
Perissodactyla
Pholidota
Pinnipedia
Primates
Proboscidea
* Pyrotheria
Rodentia
Sirenia
* Symmetrodonta
* Taeniodonta
* Tillodontia
* Triconodonta
Tubulidentata
*
Extinct taxa
A p p e n d i x B
Major Taxonomic Classification
(Use Prior to 1998 and for 1998 Forward)
40
A p p e n d i x B
Prior to 1998, Paleobiology, Paleobotany, and Paleozoology were Major Taxonomic Classifications.
