Basic info | Taxonomic history | Classification | Included Taxa |
Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Achistrum
Taxonomy
Achistrum was named by Etheridge (1881) [Sepkoski's age data: ]. It is considered to be a form taxon. Its type is Achistrum nicholsoni. It is the type genus of Achistridae.
It was synonymized objectively with Achistrulum by Deflandre-Rigaud (1962).
It was assigned to Synaptidae by Deflandre-Rigaud (1952); to Calclamnidae by Gutschick (1959); to Apodida by Sepkoski (2002); and to Achistridae by Langenheim and Epis (1957), Summerson and Campbell (1958), Said and Barakat (1958), Hampton (1958), Kornicker and Imbrie (1958), Fletcher (1962), Frizzell and Exline (1966), Gutschick et al. (1967), Garbowska and Wierzbowski (1967), Górka and Luszczewska (1969), Zawidzka (1971), Kozur and Mostler (1971), Mostler (1971), Mostler (1971), Mostler and Rahimi-Yazd (1976), Wernlund (1977), Soodan (1986), Soodan and Whatley (1987), Gilliland (1992), Henderson et al. (1992), Krainer and Mostler (1997), Reich (1999), Boczarowski (2001), Kalita et al. (2002) and Bohaty and Herbig (2010).
It was synonymized objectively with Achistrulum by Deflandre-Rigaud (1962).
It was assigned to Synaptidae by Deflandre-Rigaud (1952); to Calclamnidae by Gutschick (1959); to Apodida by Sepkoski (2002); and to Achistridae by Langenheim and Epis (1957), Summerson and Campbell (1958), Said and Barakat (1958), Hampton (1958), Kornicker and Imbrie (1958), Fletcher (1962), Frizzell and Exline (1966), Gutschick et al. (1967), Garbowska and Wierzbowski (1967), Górka and Luszczewska (1969), Zawidzka (1971), Kozur and Mostler (1971), Mostler (1971), Mostler (1971), Mostler and Rahimi-Yazd (1976), Wernlund (1977), Soodan (1986), Soodan and Whatley (1987), Gilliland (1992), Henderson et al. (1992), Krainer and Mostler (1997), Reich (1999), Boczarowski (2001), Kalita et al. (2002) and Bohaty and Herbig (2010).
Species
A. (Achistrum), A. (Aduncrum), A. (Cancellrum), A. (Spinrum), A. beckmanni, A. brevis, A. brevis, A. coloculum, A. frizzelli, A. gamma, A. issleri, A. longirostrum, A. ludwigi, A. monochordata (syn. A. bartensteini, A. bichordata, Calcligula huckei), A. multiperforatum, A. nicholsoni (type species), A. permianum, A. pulchrum, A. triassicum, A. tuto, A. varicum
Species lacking formal opinion data
Synonyms
|
Synonymy list
Year | Name and author |
---|---|
1881 | Achistrum Etheridge p. 194 |
1900 | Ancistrum Bather |
1932 | Ancistrum Croneis and McCormack pp. 142-143 |
1952 | Achistrum Deflandre-Rigaud p. 8 |
1957 | Achistrum Langenheim and Epis p. 167 |
1958 | Achistrum Hampton p. 75 |
1958 | Achistrum (Achistrum) Hampton p. 75 |
1958 | Achistrum (Spinrum) Hampton p. 75 |
1958 | Achistrum (Aduncrum) Hampton p. 76 |
1958 | Achistrum (Cancellrum) Hampton p. 76 |
1958 | Achistrum Kornicker and Imbrie p. 96 |
1958 | Achistrum Said and Barakat p. 268 |
1958 | Achistrum Summerson and Campbell p. 967 |
1959 | Achistrum Gutschick p. 132 |
1962 | Achistrum Fletcher p. 323 |
1962 | Achistrum (Achistrum) Fletcher p. 323 |
1962 | Achistrum (Aduncrum) Fletcher p. 323 |
1962 | Achistrum (Cancellrum) Fletcher p. 323 |
1962 | Achistrum (Spinrum) Fletcher p. 323 |
1966 | Achistrum Frizzell and Exline p. U665 |
1966 | Aduncrum Frizzell and Exline p. U665 |
1967 | Achistrum Garbowska and Wierzbowski p. 528 |
1967 | Achistrum (Achistrum) Garbowska and Wierzbowski p. 529 |
1967 | Achistrum (Cancellrum) Garbowska and Wierzbowski p. 530 |
1967 | Achistrum Gutschick et al. p. 1469 |
1969 | Achistrum Górka and Luszczewska p. 381 |
1969 | Achistrum (Achistrum) Górka and Luszczewska p. 381 |
1969 | Achistrum (Cancellrum) Górka and Luszczewska p. 382 |
1971 | Achistrum Kozur and Mostler p. 26 |
1971 | Achistrum Mostler p. 8 |
1971 | Achistrum Zawidzka p. 434 |
1971 | Achistrum (Cancellrum) Zawidzka p. 434 |
1976 | Achistrum Mostler and Rahimi-Yazd p. 12 |
1977 | Achistrum Wernlund p. 42 |
1986 | Achistrum Soodan p. 64 |
1987 | Achistrum Soodan and Whatley p. 167 |
1987 | Achistrum (Achistrum) Soodan and Whatley p. 167 |
1987 | Achistrum (Aduncrum) Soodan and Whatley p. 167 |
1987 | Achistrum (Cancellrum) Soodan and Whatley p. 168 |
1992 | Achistrum Gilliland p. 194 |
1992 | Achistrum Henderson et al. p. 13 |
1992 | Adencrum Henderson et al. p. 13 figs. Pl. 2, L |
1997 | Achistrum Krainer and Mostler p. 8 |
1999 | Achistrum Reich p. 385 |
2001 | Achistrum Boczarowski p. 156 |
2002 | Achistrum Kalita et al. p. 141 |
2002 | Achistrum Sepkoski |
2002 | Aduncrum Sepkoski |
2010 | Achistrum Bohaty and Herbig p. 380 |
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. †Achistrum Etheridge 1881
show all | hide all
†Achistrum beckmanni Kozur and Mostler 1971
†Achistrum brevis Gutschick 1959
†Achistrum brevis Mostler 1971
†Achistrum coloculum Gutschick et al. 1967
†Achistrum frizzelli Langenheim and Epis 1957
†Achistrum gamma Hodson et al. 1956
†Achistrum issleri Croneis and McCormack 1932
†Achistrum longirostrum Mostler 1971
†Achistrum ludwigi Croneis and McCormack 1932
†Achistrum monochordata Hodson et al. 1956
hide
Invalid names: Achistrum bartensteini Frizzell and Exline 1955 [synonym], Achistrum bichordata Fletcher 1962 [synonym], Calcligula huckei Frizzell and Exline 1955 [synonym]
†Achistrum multiperforatum Beckmann 1965
†Achistrum nicholsoni Etheridge 1881
†Achistrum permianum Spandel 1898
†Achistrum pulchrum Kozur 1969
†Achistrum triassicum Frizzell and Exline 1955
†Achistrum tuto Boczarowski 2001
†Achistrum varicum Boczarowski 2001
Invalid names: Achistrum (Achistrum) Hampton 1958 [invalid subgroup], Achistrum (Aduncrum) Hampton 1958 [invalid subgroup], Achistrum (Cancellrum) Hampton 1958 [invalid subgroup], Achistrum (Spinrum) Hampton 1958 [invalid subgroup], Ancistrum Bather 1900 [synonym]
Diagnosis
No diagnoses are available