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Planocarcinus
Taxonomy
Planocarcinus was named by Luque et al. (2012). Its type is Dakoticancer olssoni.
It was assigned to Necrocarcinidae by Luque et al. (2012) and Karasawa et al. (2014); and to Orithopsidae by Schweitzer et al. (2016), Luque et al. (2017) and Schweitzer et al. (2018).
It was assigned to Necrocarcinidae by Luque et al. (2012) and Karasawa et al. (2014); and to Orithopsidae by Schweitzer et al. (2016), Luque et al. (2017) and Schweitzer et al. (2018).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 2012 | Planocarcinus Luque et al. |
| 2014 | Planocarcinus Karasawa et al. p. 235 |
| 2016 | Planocarcinus Schweitzer et al. p. 355 |
| 2017 | Planocarcinus Luque et al. p. 19 |
| 2018 | Planocarcinus Schweitzer et al. p. 10 |
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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.
G. †Planocarcinus Luque et al. 2012
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†Planocarcinus johnjagti Bermúdez et al. 2013
†Planocarcinus olssoni Rathbun 1937
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. Luque et al. 2012 | Carapace subcircular in outline, slightly wider than long, with distinct cervical, postcervical, and branchiocardiac grooves; fronto-orbital margin as long as posterior margin; rostrum bilobate, spatulate, wider than long; orbits somewhat narrow, upturned, bearing two short orbital fissures; anterolateral margin concave, bearing at least five spines; posterolateral margin convex, lacking spines; posterior margin straight; hepatic region depressed; metabranchial region swollen, lacking nodules or ridges. |