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Palaeoaxinidium
Taxonomy
Palaeoaxinidium was named by McKay (1991). It is not extant. Its type is Palaeoaxinidium orapensis. It is the type genus of Palaeoaxinidiini.
It was assigned to Palaeoaxinidiini by McKay (1991).
It was assigned to Palaeoaxinidiini by McKay (1991).
Species
P. orapensis (type species)
Synonymy list
| Year | Name and author |
|---|---|
| 1991 | Palaeoaxinidium McKay p. 3 |
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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.
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| I. J. McKay 1991 | The elongate, pedunculate, convex body together with the elongated mouth parts, and the narrow legs with the protibiae only expanded slightly distally, are typical of the subfamily Promecognathinae (Basilewsky, 1958).
Elytra of the fossil differ from those of extant genera as they are unfused terminally and have distinct stria. Resembles Promecognathus with respect to the terminal segment of its maxillary palps which are unexpanded or only slightly expanded (the Axinidiini have the terminal segment distinctly expanded) and the frontal grooves which are well developed (the Axinidiini have frontal grooves which are reduced). Palaeoaxinidium has no characters in common with the Axinidiini that it does not share with Promecognathus. |
Measurements
No measurements are available
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| Source: c = class, p = phylum | |||||
| References: Kiessling 2004, Bush and Bambach 2015 | |||||