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Plesiosaurus grandis
Taxonomy
Plesiosaurus grandis was named by Owen (1840). 
It was synonymized subjectively with Pliosaurus macromerus by Lydekker (1889); it was recombined as Pliosaurus grandis by Owen (1842), Owen (1869), Perrier (1928), Swinton (1934).
It was synonymized subjectively with Pliosaurus macromerus by Lydekker (1889); it was recombined as Pliosaurus grandis by Owen (1842), Owen (1869), Perrier (1928), Swinton (1934).
  Sister species lacking formal opinion data
  
Synonymy list
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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.
 †Plesiosaurus grandis Owen 1840
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: o = order | |||||
| Reference: Kiessling 2004 | |||||
Age range: base of the Kimmeridgian to the top of the Early/Lower Tithonian or 154.80000 to 145.06000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number | 
|---|---|---|---|
| Kimmeridgian - Early/Lower Tithonian | United Kingdom (England) | Plesiosaurus grandis (74931) |