Choose Fauna


OR Choose Phyla

ACTINOPODA (711)ANNELIDA (253)ARTHROPODA (5816)BRACHIOPODA (4383)BRYOZOA (1540)
CHAETOGNATHA (11)CHORDATA (2996)CILIOPHORA (31)CNIDARIA (2437)CTENOPHORA (3)
ECHINODERMATA (2680)ECHIURIDA (1)ENTOPROCTA (1)HEMICHORDATA (288)HYOLITHA (165)
LOBOPODA (11)MOLLUSCA (10974)NEMATODA (1)NEMERTINA (2)PENTASTOMIDA (3)
POGONOPHORA (2)PORIFERA (1580)PRIAPULIDA (9)PROBLEMATICA (322)RHIZOPODEA (2138)
TRILOBOZOA (14) 
numbers in parentheses are total genera in database

OR Choose Classes

ACANTHARIA (2)ACANTHODII (28)AMPHIBIA (1)ANTHOZOA (2238)
ARACHNIDA (5)ARTICULATA (4070)ASTEROIDEA (156)AVES (29)
BIVALVIA (2861)BLASTOIDEA (110)BRACHYPODA (1)BRANCHIOPODA (1)
CALCAREA (233)CAMBROCLAVIDA (8)CAMPTOSTROMOIDEA (1)CEPHALASPIDOMORPHI (26)
CEPHALOCHORDATA (3)CEPHALOPODA (3661)CHONDRICHTHYES (378)CIRRIPEDIA (93)
COELOSCLERITOPHORA (30)CONODONTA (284)COPEPODA (2)CORONATA (6)
CRIBRICYATHEA (39)CRICOCONARIDA (45)CRINOIDEA (1128)CTENOCYSTOIDEA (2)
CYCLOZOA (6)DEMOSPONGIA (694)DINOCARDIA (9)DIPLOPORITA (45)
ECHINOIDEA (762)EDRIOASTEROIDEA (65)ENTEROPNEUSTA (2)EOCRINOIDEA (36)
GASTROPODA (3994)GRAPTOLITHINA (276)GYMNOLAEMATA (636)HELCIONELLOIDA (21)
HELICOPLACOIDEA (3)HEXACTINELLIDA (347)HOLOTHUROIDEA (96)HOMOIOSTELEA (16)
HOMOSTELEA (4)HYDROCONOZOA (8)HYDROZOA (75)HYOLITHOMORPHA (78)
INARTICULATA (13)IRREGULARES (71)LINGULATA (260)MACHAERIDIA (15)
MALACOSTRACA (594)MAMMALIA (304)MARRELOMORPHA (12)MEROSTOMATA (113)
MEROSTOMOIDEA (11)MULTIPLACOPHORA (2)MYRIAPODA (2)MYZOSTOMARIA (1)
OPHIOCISTIOIDEA (6)OPHIUROIDEA (78)ORTHOTHECIMORPHA (76)OSTEICHTHYES (1393)
OSTRACODA (1939)PALAEOSCOLECIDA (11)PARABLASTOIDEA (4)PARACRINOIDEA (18)
PARAGASTROPODA (34)PARATRILOBITA (2)PETALONAMAE (24)PLACODERMI (164)
POLYCHAETA (241)POLYHYMENOPHORA (23)POLYPLACOPHORA (97)PTERASPIDOMORPHI (100)
PTEROBRANCHIA (10)PYCNOGONIDA (4)RADIOLARIA (709)REGULARES (221)
REMIPEDIA (2)REPTILIA (283)RHIZOPODEA (2138)RHOMBIFERA (73)
ROSTROCONCHIA (40)SCAPHOPODA (32)SCYPHOZOA (55)SOMASTEROIDEA (8)
STENOLAEMATA (904)STENOTHECOIDEA (10)STYLOPHORA (63)TERGOMYA (37)
THYLACOCEPHALA (25)TOMMOTIIDA (19)TRILOBITA (2955)TUNICATA (3)
numbers in parentheses are total genera in database


Check for substage resolution
Check for per-stage rates

This database and web site written and maintained by Shanan E. Peters at The University of Wisconsin-Madison.
Please contact me to report errors, bugs or to request additional features. For more information about the database, click here.