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Gumuaspidae
Taxonomy
Gumuaspidae was named by Gai et al. (2018). Its type is Gumuaspis.
It was assigned to Polybranchiaspidiformes by Gai et al. (2018).
It was assigned to Polybranchiaspidiformes by Gai et al. (2018).
Subtaxa
Synonymy list
| Year | Name and author |
|---|---|
| 2018 | Gumuaspidae Gai et al. p. 5 |
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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.
Fm. †Gumuaspidae Gai et al. 2018
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| Z. Gai et al. 2018 | Medium to large-sized polybranchiaspiform; head-shield with a robust rostral process like a lute in outline; median dorsal opening ovate or near circular in shape; orbits dor- sally placed; pineal opening closed; corner absent; inner corner broad leaf-shaped, end of inner corner beyond the posterior margin of the head-shield; polybranchiaspid-type sensory canal system; posterior supraorbital canal developed and V-shaped; 6–9 pairs of branchial fos- sae; ornamentation comprising stellate-like or coarse-granular tubercles. |
Measurements
No measurements are available
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| Source: subp = subphylum, p = phylum | |||||
| References: Carroll 1988, Kiessling 2004 | |||||
Age range: base of the Telychian to the top of the Lochkovian or 438.50000 to 410.80000 Ma
Collections (4 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Telychian | China (Xinjiang) | Platylomaspis serratus (182524) | |
| Lochkovian | China (Yunnan) | Laxaspis rostrata (162781 173380) | |
| Early/Lower Devonian | China (Guangxi) | Nanningaspis zengi (223840) |