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Norwoodiidae
Taxonomy
Norwoodiidae was named by Walcott (1916). It is not extant.
It was assigned to Ptychopariida by Whittington et al. (1997); and to Trilobita by Adrain (2011).
It was assigned to Ptychopariida by Whittington et al. (1997); and to Trilobita by Adrain (2011).
Synonymy list
| Year | Name and author |
|---|---|
| 1916 | Norwoodiidae Walcott |
| 1997 | Norwoodiidae Whittington et al. p. 302 |
| 2011 | Norwoodiidae Adrain p. 108 |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
Fm. †Norwoodiidae Walcott 1916
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G. †Cedaraspis Ivshin 1960
G. †Hardyoides Kobayashi 1938
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†Hardyoides damaensis Duan 2004
†Hardyoides mimicus Palmer 1965
†Hardyoides sinensis Peng 1992
Invalid names: Norwoodina Lochman 1940 [synonym]
G. †Holcacephalus Resser 1938
G. †Levisaspis Rasetti 1943
G. †Norwoodella Resser 1938
G. †Norwoodia Walcott 1916
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†Norwoodia boninoi Robison and Babcock 2011
†Norwoodia katherina Lochman 1938
G. †Paranorwoodia Rasetti 1945
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: f = family, c = class | |||||
| References: Aberhan et al. 2004, Whittington et al. 1997 | |||||
Age range: base of the Guzhangian to the top of the Tremadocian or 500.50000 to 477.70000 Ma
Collections (68 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Menevian | USA (Utah) | Hardyoides sp. (10572) Hardyoides tenerus, Norwoodia boninoi (230681) | |
| Menevian | USA (South Dakota) | Hardyoides tenerus (8272 8273 8274 8275) | |
| Marjumian | USA (Georgia) | Holcacephalus sp. (64486) | |
| Marjumian | Canada (Quebec) | Holcacephalus tener (235509) | |
| Marjumian | USA (Wisconsin) | Norwoodia sp. (268) | |
| Guzhangian | Canada (Newfoundland) | Norwoodia katherina (198258) | |
| Guzhangian | USA (Texas) | Holcacephalus tenerus (208649 208686 208986 208987) Holcacephalus tenerus, Norwoodia quadrangularis (208668) | |
| Ayusokkanian | Kazakhstan | Holcacephalus bellus (118235 118238 118239) | |
| Taoyuanian | China (Hunan) | Hardyoides sinensis (126658 126688) | |
| Steptoean | USA (Nevada) | Hardyoides mimicus (111322 111323) | |
| Steptoean | USA (Virginia) | Norwoodella saffordi (6960 7099 7106) | |
| Sakian | Kazakhstan | Hardyoides sp. (118305 118309 118310 118312 118313 118328 118330 118332 118333 118339 118341 118342 118344 118345 118346 118348) | |
| Sakian | Russian Federation (Altai (Region)) | Hardyoides sp. (10061 10063) | |
| Dresbachian | Canada (Yukon) | Hardyoides minor (55278) Hardyoides tenerus (55211 55217) Norwoodia chattertoni (55221) Norwoodia occidentalis (55220) | |
| Dresbachian | USA (Utah) | Norwoodia bellaspina (50592) | |
| Dresbachian | USA (Wyoming) | Holcacephalus sp. (224 227) Holcacephalus tenerus (9052 9053 9054 9055 9056 9057) | |
| Dresbachian | USA (Alaska) | Hardyoides aspinosa (64801) | |
| Furongian | Argentina | Levisaspis sp. (115455 115457) | |
| Furongian | China (Hunan) | Hardyoides damaensis (124979) | |
| Merioneth | USA (Pennsylvania) | Holcacephalus tunda (77697) | |
| Sunwaptan | Canada (Newfoundland and Labrador) | Paranorwoodia alpha (81271) Paranorwoodia beta (81285) Paranorwoodia gamma (81269) | |
| Tremadoc | USA (Vermont) | Hardyoides sp. (277) | |
| Tremadoc | Canada (Newfoundland and Labrador) | Levisaspis sp. (78091) | |
| Tremadocian | Canada (Newfoundland and Labrador) | Levisaspis convexus (81290) |