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Entomaspididae
Taxonomy
Entomaspididae is a family. Its type is Entomaspis. It was considered paraphyletic by Beech and Lamsdell (2021).
It was synonymized subjectively with Harpetidae by Adrain (2011).
It was assigned to Harpetida by Kiessling (2009) and Beech and Lamsdell (2021).
It was synonymized subjectively with Harpetidae by Adrain (2011).
It was assigned to Harpetida by Kiessling (2009) and Beech and Lamsdell (2021).
Subtaxa
Synonymy list
| Year | Name and author |
|---|---|
| 2009 | Entomaspididae Kiessling |
| 2021 | Entomaspididae Beech and Lamsdell p. 2220 |
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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 | |
|---|---|---|
| J. D. Beech and J. C. Lamsdell 2021 | Exoskeleton small. Cephalon semicircular, characterized by anterior and posterior sections of facial sutures close to each other, both directed outward and backward; librigenae fused together through doublure, consisting of narrow dorsal strips connecting eyes to margin and to genal spines (modified from Fortey & Owens 1997). |
Measurements
No measurements are available
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| Source: c = class | |||||
| Reference: Aberhan et al. 2004 | |||||
Age range: base of the Guzhangian to the top of the Stairsian or 500.50000 to 478.60000 Ma
Collections (40 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Guzhangian | China (Hunan) | Baikadamaspis linearis (49182) Baikadamaspis linearis, Baikadamaspis granulosa (49181) Baikadamaspis paibiensis (107050) Baikadamaspis sp. (49184 128933) | |
| Paibian | China (Hunan) | Baikadamaspis granulosa (126147) Baikadamaspis paibiensis (49191 49195 107051 126130 126136 126139 126140) Baikadamaspis sinensis (126142 126143) | |
| Sakian | Kazakhstan | Baikadamaspis proprius (118252 118253 118254 118255 118260 118262 118263 118264 118304 118305 118309 118310 118312 118313 118328 118330 118332) | |
| Trempealeauan | USA (Missouri) | Entomaspis radiatus (98343) | |
| Trempealeauan | USA (Wisconsin) | Entomaspis sp. (256) | |
| Stairsian | USA (Idaho) | Hypothetica rawi (103822 106389 228261 228262) Hypothetica sp. (228263 228264) |