SCHEME OF THE CLASSIFICATION ADOPTED IN THIS BOOK

The names of extinct groups are printed in italics.

CHORDATA (p. 3).

I. HEMICHORDATA (p. 3).

Order. Family.

ENTEROPNEUSTA (p. 5) Glandicipitidae (p. 17). Ptychoderidae (p. 17). Harrimaniidae (p. 17).

PTEROBRANCHIA (p. 21)

PHORONIDEA (p. 27)

II. UROCHORDATA = TUNICATA (pp. 4, 35, 63).

Order. Sub-Order. Family. Sub-Family.

LARVACEA (p. 64) Kowalevskiidae (p. 68). Appendiculariidae (p. 68).

ASCIDIACEA (p. 70) Ascidiae Simplices (p. 71). Clavelinidae (p. 71).

Ascidiidae (p. 72). Hypobythiinae (p. 72). Ascidiinae (p. 72). Corellinae (p. 73).

Cynthiidae (p. 74). Styelinae (p. 74). Cynthiinae (p. 75). Bolteninae (p. 75).

Molgulidae (p. 77).

Ascidiae Compositae (p. 80) Merosomata (p. 85) Distomatidae (p. 85). Coelocormidae (p. 86). Didemnidae (p. 86). Diplosomatidae (p. 87). Polyclinidae (p. 87).

Holosomata (p. 88) Botryllidae (p. 88). Polystyelidae (p. 89).

Ascidiae Luciae (p. 90) Pyrosomatidae (p. 91).

THALIACEA (p. 95) Cyclomyaria (p. 95). Doliolidae (p. 96).

Hemimyaria (p. 101). Salpidae (p. 101). Octacnemidae (p. 108).

III. CEPHALOCHORDATA (pp. 4, 112).

Family.

Branchiostomatidae (p. 137).

IV. CRANIATA (pp. 4, 141).

Class—Cyclostomata (pp. 145, 150, 421).

Sub-Class. Order. Sub-Order. Family. Sub-Family.

Myxinoides (p. 421) Myxinidae (p. 422). Bdellostomatidae (p. 423).

Petromyzontes (p. 425) Petromyzontidae (p. 426).

Class—Pisces (pp. 145, 431).

ELASMOBRANCHII (p. 431) Pleuropterygii (p. 436) Cladoselachidae (p. 438).

Ichthyotomi (p. 440) Pleuracanthidae (p. 440).

Acanthodei (p. 440) Diplacanthidae (p. 441). Acanthodidae (p. 441).

Plagiostomi (p. 442) Selachii (p. 442) Notidanidae (p. 442). Chlamydoselachidae (p. 443). Heterodontidae (p. 444). Cochliodontidae (p. 445). Psammodontidae (p. 446). Petalodontidae (p. 446). Scylliidae (p. 446). Carchariidae (p. 448). Sphyrnidae (p. 449). Lamnidae (p. 450). Cetorhinidae (p. 453). Rhinodontidae (p. 454). Spinacidae (p. 454). Rhinidae (p. 456). Pristiophoridae (p. 457).

Batoidei (p. 457) Pristidae (p. 459). Rhinobatidae (p. 460). Raiidae (p. 461). Tamiobatidae (p. 462). Torpedinidae (p. 462). Trygonidae (p. 464). Myliobatidae (p. 465).

Holocephali (p. 466) Ptyctodontidae (p. 468). Squaloraiidae (p. 468). Myriacanthidae (p. 468). Chimaeridae (p. 468).

TELEOSTOMI (p. 475) Crossopterygii (p. 476) Osteolepida (p. 437) Osteolepidae (p. 477). Rhizodontidae (p. 478). Holoptychidae (p. 479). Coelacanthidae (p. 480).

Cladistia (p. 481) Polypteridae (p. 481).

Chondrostei (p. 485) Palaeoniscidae (p. 486). Platysomidae (p. 487). Belonorhynchidae (p. 488). Catopteridae (p. 488). Chondrosteidae (p. 489). Polyodontidae (p. 491). Acipenseridae (p. 492).

Holostei (p. 495) Semionotidae (p. 497). Macrosemiidae (p. 498). Pycnodontidae (p. 498). Eugnathidae (p. 498). Amiidae (p. 499). Pachycormidae (p. 501). Aspidorhynchidae (p. 502). Lepidosteidae (p. 502).

Teleostei (pp. 504, 541). Malacopterygii (p. 543) Pholidophoridae (p. 545). Archaeomaenidae (p. 545). Oligopleuridae (p. 545). Leptolepididae (p. 546). Elopidae (p. 546). Albulidae (p. 547).

Mormyridae (p. 549) Mormyrinae (p. 551). Gymnarchinae (p. 551)

Hyodontidae (p. 552). Notopteridae (p. 554). Osteoglossidae (p. 555). Pantodontidae (p. 558). Ctenothrissidae (p. 559). Phractolaemidae (p. 560). Saurodontidae (p. 561). Chirocentridae (p. 561).

Clupeidae (p. 562) Thrissopatrinae (p. 562). Engraulinae (p. 563). Clupeinae (p. 563). Chaninae (p. 563).

Salmonidae (p. 565). [Pachyrhizodontidae (p. 569).] Alepocephalidae (p. 569).

Stomiatidae (p. 570) Chauliodontinae (p. 571). Sternoptychinae (p. 571). Stomiatinae (p. 571).

Gonorhynchidae (p. 572). Cromeriidae (p. 573).

Ostariophysi (p. 573) Characinidae (p. 575) Erythrininae (p. 575). Hydrocyoninae (p. 575). Serrasalmoninae (p. 576). Ichthyoborinae (p. 576). Xiphostominae (p. 576). Anostominae (p. 576). Hemiodontinae (p. 576). Distichodontinae (p. 576). Citharininae (p. 576).

Gymnotidae (p. 579).

Cyprinidae (p. 581) Catostominae (p. 581). Cyprininae (p. 582). Cobitidinae (p. 582). Homalopterinae (p. 582).

Siluridae (p. 586) Clariinae (p. 588). Silurinae (p. 588). Bagrinae (p. 588). Doradinae (p. 588). Malopterurinae (p. 588). Callichthyinae (p. 588). Hypophthalminae (p. 589). Trichomycterinae (p. 589).

Loricariidae (p. 594) Arginae (p. 595). Loricariinae (p. 595).

Aspredinidae (p. 596).

Symbranchii (p. 597) Symbranchidae (p. 597). Amphipnoidae (p. 598).

Apodes (p. 599) Anguillidae (p. 600). Nemichthyidae (p. 603). Synaphobranchidae (p. 603). Saccopharyngidae (p. 603). Muraenidae (p. 604).

Haplomi (p. 605) Galaxiidae (p. 607). Haplochitonidae (p. 608). Enchodontidae (p. 608). Esocidae (p. 609). Dalliidae (p. 610). Scopelidae (p. 611). Alepidosauridae (p. 614). Cetomimidae (p. 614). Chirothricidae (p. 615). Kneriidae (p. 615). Cyprinodontidae (p. 616). Amblyopsidae (p. 618). Stephanoberycidae (p. 619). Percopsidae (p. 620).

Heteromi (p. 621) Dercetidae (p. 623). Halosauridae (p. 623). Lipogenyidae (p. 624). Notacanthidae (p. 624). Fierasferidae (p. 625).

Catosteomi (p. 626) Gastrosteidae (p. 629) Aulorhynchidae (p. 631) Protosyngnathidae (p. 631) Aulostomatidae (p. 632) Fistulariidae (p. 632) Centriscidae (p. 633) Amphisilidae (p. 633) = Hemibranchii (p. 627).

Solenostomidae (p. 633) Syngnathidae (p. 634) = Lophobranchii (p. 628).

Pegasidae (p. 635) = Hypostomides (p. 628).

Percesoces (p. 636) Scombresocidae (p. 637). Ammodytidae (p. 639). Atherinidae (p. 639). Mugilidae (p. 640). Polynemidae (p. 640). Chiasmodontidae (p. 641). Sphyraenidae (p. 642). Tetragonuridae (p. 642). Stromateidae (p. 643). Icosteidae (p. 644). Ophiocephalidae (p. 644). Anabantidae (p. 645).

Anacanthini (p. 646) Macruridae (p. 647). Gadidae (p. 647). Muraenolepididae (p. 649).

Sub-Order. Division. Family.

Acanthopterygii (p. 650) Perciformes (p. 652) Berycidae (p. 655). Monocentridae (p. 656). Pempheridae (p. 656). Centrarchidae (p. 657). Cyphosidae (p. 657). Lobotidae (p. 658). Toxotidae (p. 658). Nandidae (p. 658). Percidae (p. 658). Acropomatidae (p. 659). Serranidae (p. 659) Subfamilies: * Serraninae (p. 659). * Grammistinae (p. 660). * Priacanthinae (p. 660). * Centropominae (p. 660). * Pomatominae (p. 660). * Ambassinae (p. 660). * Chilodipterinae (p. 660). * Lutjaninae (p. 660). * Cirrhitinae (p. 660). * Pentacerotinae (p. 660). Anomalopidae (p. 660). Pseudochromididae (p. 661). Cepolidae (p. 661). Hoplognathidae (p. 662). Sillaginidae (p. 662). Sciaenidae (p. 663). Gerridae (p. 663). Lactariidae (p. 663). Trichodontidae (p. 663). Latrididae (p. 663). Haplodactylidae (p. 664). Pristipomatidae (p. 664). Sparidae (p. 664). Mullidae (p. 665). Scorpididae (p. 666). Caproidae (p. 666). Chaetodontidae (p. 667). Drepanidae (p. 668). Acanthuridae (p. 668). Teuthididae (p. 668). Osphromenidae (p. 669). Embiotocidae (p. 670). Cichlidae (p. 670). Pomacentridae (p. 672). Labridae (p. 673). Scaridae (p. 674).

Scombriformes (p. 675) Carangidae (p. 677). Rhachicentridae (p. 677). Scombridae (p. 678). Trichiuridae (p. 679). Histiophoridae (p. 679). Palaeorhynchidae (p. 680). Xiphiidae (p. 681). Luvaridae (p. 681). Coryphaenidae (p. 681). Bramidae (p. 682).

Zeorhombi (p. 682) Zeidae (p. 683). Amphistiidae (p. 684). Pleuronectidae (p. 684).

Kurtiformes (p. 687) Kurtidae (p. 687).

Gobiiformes (p. 688) Gobiidae (p. 689).

Discocephali (p. 691) Echeneididae (p. 691).

Scleroparei (p. 692) Scorpaenidae (p. 694). Hexagrammidae (p. 696). Comephoridae (p. 696). Rhamphocottidae (p. 697). Cottidae (p. 697). Cyclopteridae (p. 698). Platycephalidae (p. 699). Hoplichthyidae (p. 699). Agonidae (p. 700). Triglidae (p. 700). Dactylopteridae (p. 701).

Jugulares (p. 702) Trachinidae (p. 704). Percophiidae (p. 705). Leptoscopidae (p. 705). Nototheniidae (p. 705). Uranoscopidae (p. 706). Trichonotidae (p. 706). Callionymidae (p. 706). Gobiesocidae (p. 707). Blenniidae (p. 709). Batrachidae (p. 710). Pholididae (p. 711). Zoarcidae (p. 712). Congrogadidae (p. 713). Ophidiidae (p. 713). Podatelidae (p. 713).

Taeniosomi (p. 714) Trachypteridae (p. 715). Lophotidae (p. 716).

Opisthomi (p. 716) Mastacembelidae (p. 716).

Pediculati (p. 717) Lophiidae (p. 718). Ceratiidae (p. 719). Antennariidae (p. 720). Gigantactinidae (p. 720). Malthidae (p. 720).

Plectognathi (p. 721) Sclerodermi (p. 722) Triacanthidae (p. 722). Triodontidae (p. 723). Balistidae (p. 723). Ostraconiidae (p. 722).

Gymnodontes (p. 725) Tetrodontidae (p. 726). Diodontidae (p. 726). Molidae (p. 726).

DIPNEUSTI = DIPNOI (p. 505) Ctenodontidae (p. 505). Uronemidae (p. 507). Ceratodontidae (p. 507). Lepidosirenidae (p. 511).

OF UNCERTAIN POSITION

Order. Family.

Palaeospondylidae (p. 521).

Ostracodermi (p. 522) Heterostraci (p. 524) Coelolepidae (p. 524). Drepanaspidae (p. 525). Psammosteidae (p. 526). Pteraspidae (p. 527).

Osteostraci (p. 527) Ateleaspidae (p. 528). Cephalaspidae (p. 528). Tremataspidae (p. 530).

Anaspida (p. 531) Birkeniidae (p. 531).

Antiarchi (p. 532) Asterolepidae (p. 534).

Arthrodira (p. 535) Coccosteidae (p. 536).

CHORDATA (p. 3).

I. HEMICHORDATA (p. 3).

Order. Family.

ENTEROPNEUSTA (p. 5) Glandicipitidae (p. 17). Ptychoderidae (p. 17). Harrimaniidae (p. 17).

PTEROBRANCHIA (p. 21)

PHORONIDEA (p. 27)

II. UROCHORDATA = TUNICATA (pp. 4, 35, 63).

Order. Sub-Order. Family. Sub-Family.

LARVACEA (p. 64) Kowalevskiidae (p. 68). Appendiculariidae (p. 68).

ASCIDIACEA (p. 70) Ascidiae Simplices (p. 71). Clavelinidae (p. 71).

Ascidiidae (p. 72). Hypobythiinae (p. 72). Ascidiinae (p. 72). Corellinae (p. 73).

Cynthiidae (p. 74). Styelinae (p. 74). Cynthiinae (p. 75). Bolteninae (p. 75).

Molgulidae (p. 77).

Ascidiae Compositae (p. 80) Merosomata (p. 85) Distomatidae (p. 85). Coelocormidae (p. 86). Didemnidae (p. 86). Diplosomatidae (p. 87). Polyclinidae (p. 87).

Holosomata (p. 88) Botryllidae (p. 88). Polystyelidae (p. 89).

Ascidiae Luciae (p. 90) Pyrosomatidae (p. 91).

THALIACEA (p. 95) Cyclomyaria (p. 95). Doliolidae (p. 96).

Hemimyaria (p. 101). Salpidae (p. 101). Octacnemidae (p. 108).

III. CEPHALOCHORDATA (pp. 4, 112).

Family.

Branchiostomatidae (p. 137).

IV. CRANIATA (pp. 4, 141).

Class—Cyclostomata (pp. 145, 150, 421).

Sub-Class. Order. Sub-Order. Family. Sub-Family.

Myxinoides (p. 421) Myxinidae (p. 422). Bdellostomatidae (p. 423).

Petromyzontes (p. 425) Petromyzontidae (p. 426).

Class—Pisces (pp. 145, 431).

ELASMOBRANCHII (p. 431) Pleuropterygii (p. 436) Cladoselachidae (p. 438).

Ichthyotomi (p. 440) Pleuracanthidae (p. 440).

Acanthodei (p. 440) Diplacanthidae (p. 441). Acanthodidae (p. 441).

Plagiostomi (p. 442) Selachii (p. 442) Notidanidae (p. 442). Chlamydoselachidae (p. 443). Heterodontidae (p. 444). Cochliodontidae (p. 445). Psammodontidae (p. 446). Petalodontidae (p. 446). Scylliidae (p. 446). Carchariidae (p. 448). Sphyrnidae (p. 449). Lamnidae (p. 450). Cetorhinidae (p. 453). Rhinodontidae (p. 454). Spinacidae (p. 454). Rhinidae (p. 456). Pristiophoridae (p. 457).

Batoidei (p. 457) Pristidae (p. 459). Rhinobatidae (p. 460). Raiidae (p. 461). Tamiobatidae (p. 462). Torpedinidae (p. 462). Trygonidae (p. 464). Myliobatidae (p. 465).

Holocephali (p. 466) Ptyctodontidae (p. 468). Squaloraiidae (p. 468). Myriacanthidae (p. 468). Chimaeridae (p. 468).

TELEOSTOMI (p. 475) Crossopterygii (p. 476) Osteolepida (p. 437) Osteolepidae (p. 477). Rhizodontidae (p. 478). Holoptychidae (p. 479). Coelacanthidae (p. 480).

Cladistia (p. 481) Polypteridae (p. 481).

Chondrostei (p. 485) Palaeoniscidae (p. 486). Platysomidae (p. 487). Belonorhynchidae (p. 488). Catopteridae (p. 488). Chondrosteidae (p. 489). Polyodontidae (p. 491). Acipenseridae (p. 492).

Holostei (p. 495) Semionotidae (p. 497). Macrosemiidae (p. 498). Pycnodontidae (p. 498). Eugnathidae (p. 498). Amiidae (p. 499). Pachycormidae (p. 501). Aspidorhynchidae (p. 502). Lepidosteidae (p. 502).

Teleostei (pp. 504, 541) Malacopterygii (p. 543) Pholidophoridae (p. 545). Archaeomaenidae (p. 545). Oligopleuridae (p. 545). Leptolepididae (p. 546). Elopidae (p. 546). Albulidae (p. 547).

Mormyridae (p. 549) Mormyrinae (p. 551). Gymnarchinae (p. 551)

Hyodontidae (p. 552). Notopteridae (p. 554). Osteoglossidae (p. 555). Pantodontidae (p. 558). Ctenothrissidae (p. 559). Phractolaemidae (p. 560). Saurodontidae (p. 561). Chirocentridae (p. 561).

Clupeidae (p. 562) Thrissopatrinae (p. 562). Engraulinae (p. 563). Clupeinae (p. 563). Chaninae (p. 563).

Salmonidae (p. 565). [Pachyrhizodontidae (p. 569).] Alepocephalidae (p. 569).

Stomiatidae (p. 570) Chauliodontinae (p. 571). Sternoptychinae (p. 571). Stomiatinae (p. 571).

Gonorhynchidae (p. 572). Cromeriidae (p. 573).

Ostariophysi (p. 573) Characinidae (p. 575) Erythrininae (p. 575). Hydrocyoninae (p. 575). Serrasalmoninae (p. 576). Ichthyoborinae (p. 576). Xiphostominae (p. 576). Anostominae (p. 576). Hemiodontinae (p. 576). Distichodontinae (p. 576). Citharininae (p. 576).

Gymnotidae (p. 579).

Cyprinidae (p. 581) Catostominae (p. 581). Cyprininae (p. 582). Cobitidinae (p. 582). Homalopterinae (p. 582).

Siluridae (p. 586) Clariinae (p. 588). Silurinae (p. 588). Bagrinae (p. 588). Doradinae (p. 588). Malopterurinae (p. 588). Callichthyinae (p. 588). Hypophthalminae (p. 589). Trichomycterinae (p. 589).

Loricariidae (p. 594) Arginae (p. 595). Loricariinae (p. 595).

Aspredinidae (p. 596).

Symbranchii (p. 597) Symbranchidae (p. 597). Amphipnoidae (p. 598).

Apodes (p. 599) Anguillidae (p. 600). Nemichthyidae (p. 603). Synaphobranchidae (p. 603). Saccopharyngidae (p. 603). Muraenidae (p. 604).

Haplomi (p. 605) Galaxiidae (p. 607). Haplochitonidae (p. 608). Enchodontidae (p. 608). Esocidae (p. 609). Dalliidae (p. 610). Scopelidae (p. 611). Alepidosauridae (p. 614). Cetomimidae (p. 614). Chirothricidae (p. 615). Kneriidae (p. 615). Cyprinodontidae (p. 616). Amblyopsidae (p. 618). Stephanoberycidae (p. 619). Percopsidae (p. 620).

Heteromi (p. 621) Dercetidae (p. 623). Halosauridae (p. 623). Lipogenyidae (p. 624). Notacanthidae (p. 624). Fierasferidae (p. 625).

Catosteomi (p. 626) Gastrosteidae (p. 629) Aulorhynchidae (p. 631) Protosyngnathidae (p. 631) Aulostomatidae (p. 632) Fistulariidae (p. 632) Centriscidae (p. 633) Amphisilidae (p. 633) = Hemibranchii (p. 627).

Solenostomidae (p. 633) Syngnathidae (p. 634) = Lophobranchii (p. 628).

Pegasidae (p. 635) = Hypostomides (p. 628).

Percesoces (p. 636) Scombresocidae (p. 637). Ammodytidae (p. 639). Atherinidae (p. 639). Mugilidae (p. 640). Polynemidae (p. 640). Chiasmodontidae (p. 641). Sphyraenidae (p. 642). Tetragonuridae (p. 642). Stromateidae (p. 643). Icosteidae (p. 644). Ophiocephalidae (p. 644). Anabantidae (p. 645).

Anacanthini (p. 646) Macruridae (p. 647). Gadidae (p. 647). Muraenolepididae (p. 649).

Sub-Order. Division. Family.

Acanthopterygii (p. 650) Perciformes (p. 652) Berycidae (p. 655). Monocentridae (p. 656). Pempheridae (p. 656). Centrarchidae (p. 657). Cyphosidae (p. 657). Lobotidae (p. 658). Toxotidae (p. 658). Nandidae (p. 658). Percidae (p. 658). Acropomatidae (p. 659). Serranidae (p. 659) Subfamilies: * Serraninae (p. 659). * Grammistinae (p. 660). * Priacanthinae (p. 660). * Centropominae (p. 660). * Pomatominae (p. 660). * Ambassinae (p. 660). * Chilodipterinae (p. 660). * Lutjaninae (p. 660). * Cirrhitinae (p. 660). * Pentacerotinae (p. 660). Anomalopidae (p. 660). Pseudochromididae (p. 661). Cepolidae (p. 661). Hoplognathidae (p. 662). Sillaginidae (p. 662). Sciaenidae (p. 663). Gerridae (p. 663). Lactariidae (p. 663). Trichodontidae (p. 663). Latrididae (p. 663). Haplodactylidae (p. 664). Pristipomatidae (p. 664). Sparidae (p. 664). Mullidae (p. 665). Scorpididae (p. 666). Caproidae (p. 666). Chaetodontidae (p. 667). Drepanidae (p. 668). Acanthuridae (p. 668). Teuthididae (p. 668). Osphromenidae (p. 669). Embiotocidae (p. 670). Cichlidae (p. 670). Pomacentridae (p. 672). Labridae (p. 673). Scaridae (p. 674).

Scombriformes (p. 675) Carangidae (p. 677). Rhachicentridae (p. 677). Scombridae (p. 678). Trichiuridae (p. 679). Histiophoridae (p. 679). Palaeorhynchidae (p. 680). Xiphiidae (p. 681). Luvaridae (p. 681). Coryphaenidae (p. 681). Bramidae (p. 682).

Zeorhombi (p. 682) Zeidae (p. 683). Amphistiidae (p. 684). Pleuronectidae (p. 684).

Kurtiformes (p. 687) Kurtidae (p. 687).

Gobiiformes (p. 688) Gobiidae (p. 689).

Discocephali (p. 691) Echeneididae (p. 691).

Scleroparei (p. 692) Scorpaenidae (p. 694). Hexagrammidae (p. 696). Comephoridae (p. 696). Rhamphocottidae (p. 697). Cottidae (p. 697). Cyclopteridae (p. 698). Platycephalidae (p. 699). Hoplichthyidae (p. 699). Agonidae (p. 700). Triglidae (p. 700). Dactylopteridae (p. 701).

Jugulares (p. 702) Trachinidae (p. 704). Percophiidae (p. 705). Leptoscopidae (p. 705). Nototheniidae (p. 705). Uranoscopidae (p. 706). Trichonotidae (p. 706). Callionymidae (p. 706). Gobiesocidae (p. 707). Blenniidae (p. 709). Batrachidae (p. 710). Pholididae (p. 711). Zoarcidae (p. 712). Congrogadidae (p. 713). Ophidiidae (p. 713). Podatelidae (p. 713).

Taeniosomi (p. 714) Trachypteridae (p. 715). Lophotidae (p. 716).

Opisthomi (p. 716) Mastacembelidae (p. 716).

Pediculati (p. 717) Lophiidae (p. 718). Ceratiidae (p. 719). Antennariidae (p. 720). Gigantactinidae (p. 720). Malthidae (p. 720).

Plectognathi (p. 721) Sclerodermi (p. 722) Triacanthidae (p. 722). Triodontidae (p. 723). Balistidae (p. 723). Ostraconiidae (p. 722).

Gymnodontes (p. 725) Tetrodontidae (p. 726). Diodontidae (p. 726). Molidae (p. 726).

DIPNEUSTI = DIPNOI (p. 505) Ctenodontidae (p. 505). Uronemidae (p. 507). Ceratodontidae (p. 507). Lepidosirenidae (p. 511).

OF UNCERTAIN POSITION

Order. Family.

Palaeospondylidae (p. 521).

Ostracodermi (p. 522) Heterostraci (p. 524) Coelolepidae (p. 524). Drepanaspidae (p. 525). Psammosteidae (p. 526). Pteraspidae (p. 527).

Osteostraci (p. 527) Ateleaspidae (p. 528). Cephalaspidae (p. 528). Tremataspidae (p. 530).

Anaspida (p. 531) Birkeniidae (p. 531).

Antiarchi (p. 532) Asterolepidae (p. 534).

Arthrodira (p. 535) Coccosteidae (p. 536).