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Aspidodiadematidae
Taxonomy
Aspidodiademinae was named by Duncan (1889). It is extant. 
It was reranked as the family Aspidodiadematidae by Duncan (1889), Fell (1966), Smith (1995), Kroh and Smith (2010), Smith (2015).
It was assigned to Diadematoida by Duncan (1889), Fell (1966), Smith (1995); and to Aspidodiadematoida by Kroh and Smith (2010), Smith (2015).
It was reranked as the family Aspidodiadematidae by Duncan (1889), Fell (1966), Smith (1995), Kroh and Smith (2010), Smith (2015).
It was assigned to Diadematoida by Duncan (1889), Fell (1966), Smith (1995); and to Aspidodiadematoida by Kroh and Smith (2010), Smith (2015).
Synonymy list
| Year | Name and author | 
|---|---|
| 1889 | Aspidodiadematidae Duncan | 
| 1966 | Aspidodiadematidae Fell p. U352 | 
| 1995 | Aspidodiadematidae Smith p. 744 | 
| 2010 | Aspidodiadematidae Kroh and Smith p. 170 | 
| 2015 | Aspidodiadematidae Smith p. 42 | 
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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. Aspidodiadematidae Duncan 1889
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  G. Aspidodiadema Agassiz 1878
  G. †Tiaridia Pomel 1883
  
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: c = class, p = phylum | |||||
| References: Kiessling 2004, Aberhan 1992 | |||||
Age range
Maximum range based only on fossils:  base of the Spinatum to the top of the Early/Lower Oxfordian or 192.90000 to 154.80000 Ma
Minimum age of oldest fossil (stem group age): 184.2 Ma
Minimum age of oldest fossil (stem group age): 184.2 Ma
Collections (8 total)
| Time interval | Ma | Country or state | Original ID and collection number | 
|---|---|---|---|
| Spinatum | United Kingdom (Yorkshire) | Gymnotiara sp. (38101) | |
| Scissum - Murchisonae | United Kingdom (Gloucestershire) | Culozoma baroini (196227) | |
| Sauzei | United Kingdom (England) | Gymnotiara dumortieri (196231) | |
| Late/Upper Callovian | United Kingdom (Oxfordshire) | Eosalenia jessoni (93214) | |
| Late/Upper Callovian | United Kingdom (Buckinghamshire) | Eosalenia jessoni (196232) | |
| Early/Lower Oxfordian | United Kingdom (Cambridgeshire) | Eosalenia jessoni (93211 93213) | |
| Early/Lower Oxfordian | United Kingdom (England) | Pseudodiadema jessoni (191840) |