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Taxonomy
Floridatragulus was named by White (1940). Its type is Floridatragulus dolichanthereus. It is the type genus of Floridatragulinae.
It was assigned to Camelidae by White (1940) and Carroll (1988); and to Floridatragulinae by Maglio (1966), Honey et al. (1998) and Prothero et al. (2023).
It was assigned to Camelidae by White (1940) and Carroll (1988); and to Floridatragulinae by Maglio (1966), Honey et al. (1998) and Prothero et al. (2023).
Species
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1940 | Floridatragulus White |
| 1942 | Hypermekops White |
| 1966 | Floridatragulus Maglio p. 3 |
| 1988 | Floridatragulus Carroll |
| 1998 | Floridatragulus Honey et al. p. 444 |
| 2023 | Floridatragulus Prothero et al. pp. 534 - |
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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. †Floridatragulus White 1940
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†Floridatragulus dolichanthereus White 1940
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Invalid names: Floridatragulus barbouri White 1947 [synonym], Hypermekops olseni White 1942 [synonym]
†Floridatragulus nanus Patton 1969
†Floridatragulus texanus Patton 1969
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Invalid names: Floridatragulus hesperus Patton 1969 [synonym]
Invalid names: Hypermekops White 1942 [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| D. R. Prothero et al. 2023 | (modified from Honey et al. 1998, p. 446) Low skull with a long narrow almost cylindrical rostrum, which is straight and parallel-sided from the front to about P2, then begins to flare widely between P2 to the level of M3, where the rostrum is more than twice the width of the anterior snout. I1-3 large, subequal in size and caniniform, and spaced along the lateral margin of the palate with diastemata between them. Canine is variable in size, either smaller or larger than I3, and separated by a diastema from P1. P1 variably present because it might be a retained dP1, and when present, separated from P2 by a long diastema. P2-4 relatively small with simple crowns, decreasing in anteroposterior length towards the P4 (unusual for camelids). Brachydont upper molars with a quadrate shape, with prominent parastyles, mesostyles, and metastyles, and distinct lingual intercolumnar tubercles. Like all camelids, it has an inflated auditory bulla filled with cancellous bone, and divided by a tympanohyal pit and groove. Steep occiput with prominent sagittal and lambdoid crests. Postorbital bar incomplete. Lower canine is small, and separated from p1 by a diastema longer than the length of m1-2. The p2 is longer anteroposteriorly than p4, and separated from p3 by a diastema that is shorter than the length of m3. The p3-4 are small, with p4 smaller than p3. Brachydont lower molars with low elongated intercolumnar tubercles. The m3 hypoconulid divided into lingual and labial selenes. (Most of these features are known only from the type species, because the remaining species are known only from lower jaw fragments or isolated teeth). |
Measurements
No measurements are available
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| Source: f = family, o = order, subc = subclass, c = class, subp = subphylum | |||||
| References: Carroll 1988, Nowak 1991, Hendy et al. 2009, Lillegraven 1979, Nowak 1999 | |||||
Age range: base of the Barstovian to the top of the Hemingfordian or 16.30000 to 15.97000 Ma
Collections (8 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Hemingfordian | Panama (Panama City) | F. nanus (144879) | |
| Hemingfordian | USA (Florida) | F. barbouri, F. dolichanthereus (18597) F. sp. (18586) | |
| Hemingfordian | USA (Texas) | F. nanus (18635) F. sp. (75945) | |
| Barstovian | USA (Texas) | F. hesperus (18619) F. texanus (18627) | |
| Barstovian | USA (Nebraska) | F. sp. (18442) |