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Hutchemys
Taxonomy
Hutchemys was named by Joyce et al. (2009). Its type is Hutchemys rememdium.
It was assigned to Plastomeninae by Joyce et al. (2009); to Plastomenidae by Vitek and Joyce (2015) and Lyson et al. (2021); and to Plastomenini by Jasinski et al. (2022).
It was assigned to Plastomeninae by Joyce et al. (2009); to Plastomenidae by Vitek and Joyce (2015) and Lyson et al. (2021); and to Plastomenini by Jasinski et al. (2022).
Species
Synonyms
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Synonymy list
Year | Name and author |
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1908 | Aspideretes nassau Hay p. 499 figs. Text-fig. 653 |
1930 | Aspideretes nassau Hay p. 109 |
2009 | Derrisemys Hutchison |
2009 | Plastomenoides Hutchison |
2009 | Hutchemys Joyce et al. |
2013 | Derrisemys Hutchison et al. |
2015 | Hutchemys Vitek and Joyce |
2021 | Hutchemys Lyson et al. |
2022 | Hutchemys Jasinski et al. |
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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. †Hutchemys Joyce et al. 2009
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†Hutchemys acupictus Hay 1907
†Hutchemys arctochelys Joyce et al. 2009
†Hutchemys rememdium Joyce et al. 2009
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Invalid names: Plastomenoides lamberti Hutchison 2009 [synonym]
†Hutchemys sterea Hutchison 2009
†Hutchemys tetanetron Hutchison 2009
†Hutchemys walkerorum Jasinski et al. 2022
Invalid names: Aspideretes nassau Hay 1908 [nomen dubium], Derrisemys Hutchison 2009 [synonym], Plastomenoides Hutchison 2009 [synonym]
Diagnosis
Reference | Diagnosis | |
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J. H. Hutchison 2009 (Plastomenoides) | Small to moderately large size; plastron without
post-entoplastral fontanelles in adults; hyoplastron, hypoplastron and xiphiplastron rigidly sutured and completely calloused ventrally; epiplastron subtriangular with short but distinct lateral arm, epiplastron well calloused; entoplastron transversely elongate with a relatively straight anterior margin, calloused, recessed into hyoplastra and sutured to hyoplastra laterally and posteriorly in adults; interclavicular alae inserted into grooves on the dorsal side of the hyoplastra; hyoplastron tapers laterally to a single point and expanded anteriorly to enclose the lateral margin of the entoplastron; peripheral ossifications apparently absent in mature adults; pelvis extending beyond the bony confines of the carapace; carapace broadly domed and oval to subrectangular; eight costals that thicken and terminate abruptly; rib ends compressed, short and may not extend beyond the costal margins; C8 moderate in size; nuchal not smoothly contiguous with costal margins and marked by a small spur or distinct change in angle near the suture; nuchal wide and shallow and distinctly emarginate; preneural present or absent. |