| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Tropidelasma
Taxonomy
Tropidelasma was named by Cooper and Grant (1969) [Sepkoski's age data: P Asse-l P Guad-u Sepkoski's reference number: 7]. Its type is Tropidelasma culmenatum.
It was assigned to Streptorhynchinae by Williams et al. (2000); and to Strophomenida by Sepkoski (2002).
It was assigned to Streptorhynchinae by Williams et al. (2000); and to Strophomenida by Sepkoski (2002).
Species
Erismatina cooperi, T. anthicum, T. corniculum, T. costellatum, T. culmenatum (type species), T. curtum, T. daijiagouensis, T. elongata, T. furcillatum, T. gregarium, T. perattenuatum, T. ptomatis, T. pygmaeum, T. rhamphodes, T. robertsi, T. strobilum, T. triangularis, T. undulatum, T. yamasugensis, T. zhongliangshanensis
Entered
by J. Sepkoski on 2003-01-23; modified by M. Clapham on 2013-10-27
Synonyms
|
Synonymy list
| Year | Name and author |
|---|---|
| 1969 | Tropidelasma Cooper and Grant p. 3 |
| 1983 | Erismatina Waterhouse p. 117 |
| 1985 | Parageyerella He and Zhu p. 201 |
| 2000 | Tropidelasma Williams et al. |
| 2002 | Erismatina Sepkoski |
| 2002 | Parageyerella Sepkoski |
| 2002 | Tropidelasma 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. †Tropidelasma Cooper and Grant 1969
show all | hide all
†Tropidelasma anthicum Cooper and Grant 1974
†Tropidelasma corniculum Cooper and Grant 1974
†Tropidelasma costellatum Cooper and Grant 1974
†Tropidelasma culmenatum Cooper and Grant 1969
†Tropidelasma curtum Cooper and Grant 1974
†Tropidelasma daijiagouensis He and Zhu 1985
†Tropidelasma elongata Chen and Liao 2007
†Tropidelasma furcillatum Cooper and Grant 1974
†Tropidelasma gregarium Girty 1909
†Tropidelasma perattenuatum Girty 1909
†Tropidelasma ptomatis Grant 1995
†Tropidelasma pygmaeum Girty 1909
†Tropidelasma rhamphodes Cooper and Grant 1974
†Tropidelasma robertsi Cooper and Grant 1974
†Tropidelasma strobilum Cooper and Grant 1974
†Tropidelasma triangularis Shen and Shi 2007
†Tropidelasma undulatum King 1931
†Tropidelasma yamasugensis Tazawa 2010
†Tropidelasma zhongliangshanensis He and Zhu 1985
Invalid names: Erismatina Waterhouse 1983 [synonym], Parageyerella He and Zhu 1985 [synonym]
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 66 | 18.6 | 3.00 | 58.6 | 20.2 | 13.6 | |
| valve height | 1 | 16.5 | - | - | - | - |
|
|
||||
|
|
||||
|
|||||
|
|
||||
|
|
||||
| Source: c = class, p = phylum, uc = unranked clade | |||||
| References: Aberhan et al. 2004, Nesnidal et al. 2013 | |||||
Age range: base of the Gzhelian to the top of the Changhsingian or 303.70000 to 251.90200 Ma
Collections (134 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Gzhelian | USA (Texas) | T. culmenatum (43488 105974) T. sp. 2 (43507) | |
| Asselian | USA (Texas) | T. culmenatum (43468 43469 43474 43475 43478 43479 43481 75952) T. sp. (75953) | |
| Sakmarian | USA (Texas) | T. strobilum (43542 43546 43606) | |
| Artinskian | USA (Texas) | Streptorhynchus pygmaeum (150119) T. rhamphodes (43559 43577 43581 43594 75886 75931 105685) T. sp. 5, T. costellatum (43545) T. strobilum (43533 43540 43568 105720) | |
| Artinskian - Kungurian | USA (Texas) | T. sp. 3 (105972) | |
| Kungurian | Japan | T. curtum (181933) T. yamasugensis (125087) | |
| Kungurian | USA (Texas) | Streptorhynchus pygmaeum (108399 149783) Streptorhynchus pygmaeum, Streptorhynchus undulatum (149931) Streptorhynchus undulatum (149777 149987 150115) T. corniculum (43513) T. costellatum (43496) T. rhamphodes (43565) T. robertsi (75924 106162) T. sp. 1, T. rhamphodes (105689) T. sp. 3 (75926) T. sp. 4 (101785) | |
| Kungurian | USA (New Mexico) | T. curtum (94875) | |
| Roadian | USA (Texas) | Streptorhynchus pygmaeum (149786) Streptorhynchus pygmaeum, Streptorhynchus sp. a (108862) T. anthicum (43548 43551 43553 81650 102605 105592 105726 105932 106123) T. corniculum (43465 43554 43563 81640 101781 101783 102607 102610 102615 102621 105874 105875 106107 106109) T. furcillatum (81693) T. sp., T. furcillatum (101767 102602) | |
| Roadian | Mexico (Coahuila) | Streptorhynchus gregarium (63057 133175) | |
| Roadian | Mexico (Chiapas) | T. furcillatum (198600) | |
| Roadian - Wordian | USA (Texas) | Streptorhynchus pygmaeum (149944 150118) | |
| Roadian - Capitanian | USA (Texas) | Streptorhynchus perattenuatum, Streptorhynchus pygmaeum (108827) | |
| Wordian | USA (Texas) | T. anthicum (43550 105821 105977) T. gregarium (101867 102619 106108 106138) T. sp. (106105) | |
| Capitanian | USA (Texas) | Streptorhynchus gregarium (108812) T. gregarium (81517 81589 81590 81591 81593 81609 81615 81618 81626 81631 81698 81706 101798 101809 102618 105893 105894 105895 105993 106243) T. sp. (106246) | |
| Capitanian | USA (New Mexico) | T. gregarium (81620 81629 102625 102628 105989) | |
| Wuchiapingian | Greece | T. ptomatis (42460 42461 64171) | |
| Changhsingian | China (Sichuan) | Parageyerella sp., Parageyerella daijiagouensis (95646) | |
| Changhsingian | Japan | T. sp. (107624) | |
| Changhsingian | Thailand | Erismatina cooperi (8145 42776 42777) | |
| Changhsingian | China (Guangxi) | T. elongata (74731 97023) T. zhongliangshanensis (206156) | |
| Changhsingian | China (Chongqing) | Parageyerella zhongliangshanensis (126979) T. triangularis (138390 138455) T. zhongliangshanensis (94985 138488) T. zhongliangshanensis, T. triangularis (94984 138387) | |
| Changhsingian | China (Guizhou) | T. zhongliangshanensis (117481) |