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Lytoloma
Taxonomy
Lytoloma was named by Cope (1870). Its type is Lytoloma angusta.
It was assigned to Chelydrinae by Cope (1870); to Propleuridae by Cope (1884); to Chelonidae by Lydekker (1889); to Thalassemydidae by Hay (1902), Hay (1908) and Hay (1930); to Osteopyginae by Kuhn (1966); and to Cheloniidae by Hirayama and Tong (2003).
It was assigned to Chelydrinae by Cope (1870); to Propleuridae by Cope (1884); to Chelonidae by Lydekker (1889); to Thalassemydidae by Hay (1902), Hay (1908) and Hay (1930); to Osteopyginae by Kuhn (1966); and to Cheloniidae by Hirayama and Tong (2003).
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.
G. †Lytoloma Cope 1870
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†Lytoloma bruxelliensis Dollo 1909
†Lytoloma cantabrigiense Lydekker 1889
†Lytoloma crassa Bergounioux 1952
†Lytoloma elegans Bergounioux 1952
Lytoloma jeanesii Cope 1870
†Lytoloma wemmeliensis Dollo 1909
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| O. P. Hay 1908 | Lower jaw with broad, flat crushing-surface and long symphysis; the tip not beaked. Carapace resembling that of Caretta caretta but less pointed behind. None of the anterior peripherals suturally articulated with the costal plates, rib-pits of most of the peripherals in the hinder half of these bones. The eleventh peripheral with pit for rib of eighth costal. Plastron not well known, but believed to have a narrower connection with the carapace than in Osteopygis. Limbs not well known, the humerus and femur supposed to have about equal development, with tendencies toward the structure of the same parts in Cheloniidae. |
Measurements
No measurements are available
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| Source: superf = superfamily, subo = suborder, c = class, subp = subphylum | |||||
| References: Bush and Bambach 2015, Uetz 2005, Carroll 1988, Hendy et al. 2009 | |||||
Age range
Maximum range based only on fossils: base of the Late/Upper Albian to the top of the Lutetian or 105.30000 to 41.30000 Ma
Minimum age of oldest fossil (stem group age): 99.6 Ma
Minimum age of oldest fossil (stem group age): 99.6 Ma
Collections (9 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Albian | United Kingdom (England) | L. cantabrigiense (94210) | |
| Late/Upper Maastrichtian | USA (New Jersey) | L. jeanesii (88034 167780) | |
| Early/Lower Eocene | Tunisia (Gafsa) | L. crassa, Thalassochelys phosphatica (151620) | |
| Lutetian | Belgium (Brussels) | L. bruxelliensis (188451) | |
| Lutetian | United Kingdom (England) | L. sp. (41992 41994 41996 41998) |