| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Micragnostus
Taxonomy
Micragnostus was named by Howell (1935) [Sepkoski's age data: Cm Dres-u O Llvi-l Sepkoski's reference number: 16,721,1066]. It is not extant. Its type is Agnostus calvus.
It was reranked as Geragnostus (Micragnostus) by Lu and Lin (1980).
It was assigned to Geragnostus by Lu and Lin (1980); to Agnostidae by Whittington et al. (1997), Bao and Jago (2000); and to Agnostida by Sepkoski (2002).
It was reranked as Geragnostus (Micragnostus) by Lu and Lin (1980).
It was assigned to Geragnostus by Lu and Lin (1980); to Agnostidae by Whittington et al. (1997), Bao and Jago (2000); and to Agnostida by Sepkoski (2002).
Species
Geragnostus (Micragnostus) acrolebes, Geragnostus (Micragnostus) bilobus, Geragnostus (Micragnostus) chengcunensis, M. brevispinus, M. calviformis, M. calvus, M. chiushuensis, M. curvata, M. elongatus, M. insolitus, M. mutabilis, M. orientalis, M. pehuenchensis (syn. M. intermedius), M. quadratiformis, M. serus, M. strictus, M. vilonii
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1935 | Micragnostus Howell |
| 1980 | Geragnostus (Micragnostus) Lu and Lin |
| 1997 | Micragnostus Whittington et al. p. 342 |
| 2000 | Micragnostus Bao and Jago pp. 887. 890 |
| 2002 | Micragnostus Sepkoski |
Is something missing? Join the Paleobiology Database and enter the data
|
|
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.
G. †Micragnostus Howell 1935
show all | hide all
†Geragnostus (Micragnostus) acrolebes Shergold 1971
†Geragnostus (Micragnostus) bilobus Qiu 1984
†Geragnostus (Micragnostus) chengcunensis Qiu 1984
†Micragnostus brevispinus Lermontova 1951
†Micragnostus calviformis Harrington and Leanza 1957
†Micragnostus calvus Lake 1906
†Micragnostus chiushuensis Kobayashi 1931
†Micragnostus curvata Robison and Pantoja-Alor 1968
†Micragnostus elongatus Chien 1961
†Micragnostus insolitus Grant 1965
†Micragnostus mutabilis Ergaliev 1980
†Micragnostus orientalis Lu and Lin 1980
†Micragnostus pehuenchensis Rusconi 1953
hide
Invalid names: Micragnostus intermedius Palmer 1968 [synonym]
†Micragnostus quadratiformis Ergaliev and Ergaliev 2008
†Micragnostus serus Fortey 1980
†Micragnostus strictus Sun 1989
†Micragnostus vilonii Harrington and Leanza 1957
Diagnosis
No diagnoses are available
Measurements
No measurements are available
|
|
||||
|
|
||||
|
|
||||
|
|
||||
|
|||||
|
|
||||
|
|||||
|
|
||||
| Source: g = genus, f = family, o = order | |||||
| References: Hendy 2009, Kiessling 2004 | |||||
Age range: base of the Taoyuanian to the top of the Lancefieldian or 495.20000 to 474.90000 Ma
Collections (202 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Paibian | China (Hunan) | Geragnostus chiushuensis (124977) | |
| Maentwrogian | Australia (Tasmania) | M. sp.1 (8087) M. sp.2 (8084) | |
| Franconian | Canada (Yukon) | M. chiushuensis (55304) | |
| Franconian - Trempealeauan | Australia (Queensland) | Geragnostus acrolebes (198276 198277 198279 198283) | |
| Furongian | Argentina | M. vilonii (115454 115455 115456 115457 115458 223798) M. vilonii, M. calviformis (235392 235393) | |
| Furongian | Argentina (Jujuy) | M. vilonii (115418 115420 115422 115423 115424 115429 115430 115433 115434 115436 115437 115438 115439 115440) | |
| Furongian | Argentina (Salta) | M. vilonii (199753) | |
| Furongian | United Kingdom | M. sp. (229505 229507) | |
| Furongian | Argentina (La Rioja) | M. vilonii, M. calviformis (42518) | |
| Furongian | South Korea | M. intermedius (74269) M. sp. (232036 232037 232038 232039) | |
| Merioneth | Argentina (Mendoza) | Homagnostus pehuenchensis (9818) | |
| Taoyuanian | Russian Federation (Sakha) | Eurudagnostus brevispinus (133606 133607 133609) | |
| Taoyuanian | South Korea | M. elongatus (133443 133445 133447 133448 133449 133450 133451 133452 133453) M. intermedius (133458 133464 133465 133467 133471 133474) M. intermedius, M. elongatus (133444 133446) | |
| Taoyuanian | China (Liaoning) | M. sp. (126813) | |
| Taoyuanian | China (Shandong) | M. strictus (126777) | |
| Taoyuanian - Niuchehean | China (Zhejiang) | Geragnostus orientalis (125522 125523 125524 125566 125567) | |
| Taoyuanian - Niuchehean | China (Anhui) | Geragnostus sp. (127320) | |
| Sunwaptan | Argentina | M. pehuenchensis (235994) | |
| Sunwaptan | Canada (Newfoundland and Labrador) | M. insuetus (81272) M. intermedius (81277 81284) | |
| Sunwaptan | Canada (Alberta) | M. insolitus (54093 81300 81303 81305 81307) | |
| Aksaian | Kazakhstan | M. curvata (118481 118486 118488 118880 118881 118883 118884 118885) M. curvata, M. brevispinus (118487 118872 118878) M. intermedius (118382 118387 118393 118394 118397 118401 118402 118403 118404 118442 118443 118444 118445 118460 118463 118465) M. intermedius, M. brevispinus (118458 118467 118475 118476) | |
| Batyrbaian | Kazakhstan | M. brevispinus (118899) M. brevispinus, M. elongatus (118900) M. elongatus (118892 118894 118896 118898 118901) M. intermedius (118895) M. mutabilis (118909 118910) M. mutabilis, M. quadratiformis (118906 118908) M. quadratiformis (118907) | |
| Payntonian | Australia (Northern Territory) | Geragnostus sp. (77416 77530) | |
| Niuchehean | Türkiye | M. sp. (133722 133723) | |
| Niuchehean | China (Liaoning) | M. chiushuensis (126774) | |
| Niuchehean | China (Zhejiang) | Geragnostus chiushuensis (125701) | |
| Niuchehean | China (Anhui) | Geragnostus chengcunensis, Geragnostus bilobus (127322) Geragnostus sp. (127321 127324) | |
| Niuchehean | China (Hunan) | M. chiushuensis (107332 107335 126679 126730) M. sp. (126724) | |
| Niuchehean | China (Hebei) | Geragnostus chiushuensis (129659) M. chiushuensis (126775) | |
| Niuchehean | China (Jilin) | M. chiushuensis (126776) | |
| Payntonian - Datsonian | Australia (Tasmania) | M. sp. (62280) | |
| Stage 10 | Argentina | M. vilonii (115453) | |
| Trempealeauan | Canada (Yukon) | M. insolitus (55305 55307) M. sp. (55308 55310) | |
| Trempealeauan | USA (Wyoming) | M. insolitus (9771 9772) | |
| Ibexian | Norway (Spitsbergen) | M. serus (106471 106475) M. sp. A, M. serus (106472) | |
| Datsonian | Australia (Northern Territory) | Geragnostus sp. (77619) | |
| Tremadocian | Canada (Newfoundland and Labrador) | M. intermedius (81289) | |
| Tremadocian | Argentina | M. chiushuensis (156001) | |
| Tremadocian | United Kingdom | Agnostus calvus (208218 208223 208225) | |
| Cressagian | United Kingdom (England) | M. sp. (3711 3712) | |
| Tremadoc | Argentina | M. sp. (8866 8897) | |
| Tremadoc | Bolivia | M. chayasaensls (8802) M. hoeki (8804) M. sp. (8801 8803 8837 8838) | |
| Tremadoc | Canada (Alberta) | Geragnostus chiushuensis (10923 10996 11001 11031 11046 11050) | |
| Tremadoc | Canada (Northwest Territories) | M. intermedius (192761) | |
| Tremadoc | Mexico (Oaxaca) | Geragnostus curvata (9831 9832 9833 9834) Geragnostus intermedius (9823 9824 9825 9827 9829 9830 9836 9837 9838 9839 9840 9841 9842 9843 9844 9846 9847 9848 9851) | |
| Lancefieldian | Australia (Victoria) | M. hoeki (165725) | |
| Migneintian | United Kingdom (England) | Agnostus calvus (3710) | |
| Arenig | Norway (Spitsbergen) | M. sp. (76646) | |
| Arenig | Argentina | M. sp. (8872 8878) | |
| Arenigian | France (Alsace) | M. languedocensis (64526) | |
| Billingen | Norway (Spitsbergen) | M. serus (106473) |