Alligatorium

Alligatorium; Temporal range: Kimmeridgian-early Tithonian, 157.3–152.3 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
	A. meyeri fossil
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Family:	†Atoposauridae
Genus:	†Alligatorium; Gervais, 1871
Species
	A. meyeri Gervais, 1871 (type);

Alligatorium is an extinct genus of atoposaurid crocodylomorph from Late Jurassic marine deposits in France.

Systematics

The type species is A. meyeri, named in 1871 from a single specimen from Cerin, eastern France. Two more nominal species, A. franconicum, named in 1906, and A paintenense, named in 1961, are based on now-missing specimens from Bavaria, southern Germany, and were synonymized into a single species, for which A. franconicum has priority.[1] A 2016 review of Atoposauridae removed A. franconicum from Alligatorium and placed at Neosuchia incertae sedis.[2]

Alligatorium depereti, described in 1915, was reassigned to its own genus, Montsecosuchus, in 1988.[3]

gollark: Using my patented ***ALGORITHM*** of basic statistics and wild guessing™.

gollark: That's basically what I said (the extra volume of halloween stuff mucks up the ratios).

gollark: Any opinions on my theory of what's going on with the pricing? Basically, I said that if extra dragons are introduced to the total but not the rest of the system (golds, whatever else), then rarer stuff's ratios will be affected more than common stuff, so the gold pricing goes crazy and nebulae stay the same.

gollark: 3.

gollark: My theory of what's up, copied from the forum thread:If many new eggs are being introduced to the system, then that will most affect the stuff which is rarest, by making it rarer by comparison, but commons will stay the same. As for why it happened now? Weekly updates, possibly.Example:Imagine there are 200 dragons, 5 of which are golds.The ratio of golds to total dragons is now 5:200 = 1:40. If the target ratio is 1:50 then prices will be higher to compensate.Now imagine there are an extra 200 dragons added, none of which are golds.The ratio would then be 5:400 = 1:80. Then, assuming the same target, prices will drop.This is of course simplified, and the ratios may not work like this, but this matches observed behavior pretty well.

References

Tennant, Jonathan P.; Mannion, Philip D. (2014). "Revision of the Late Jurassic crocodyliformAlligatorellus, and evidence for allopatric speciation driving high diversity in western European atoposaurids". PeerJ. 2: e599. doi:10.7717/peerj.599. ISSN 2167-8359. PMC 4179893. PMID 25279270.
Tennant, Jonathan P.; Mannion, Philip D.; Upchurch, Paul (2016). "Evolutionary relationships and systematics of Atoposauridae (Crocodylomorpha: Neosuchia): implications for the rise of Eusuchia" (PDF). Zoological Journal of the Linnean Society. 177 (4): 854–936. doi:10.1111/zoj.12400. ISSN 1096-3642.
Buscalioni, A. D.; Sanz, J. L. (1988). "Phylogenetic relationships of the Atoposauridae". Historical Biology. 1 (3): 233–250. doi:10.1080/08912968809386477.

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[1] Tennant, Jonathan P.; Mannion, Philip D. (2014). "Revision of the Late Jurassic crocodyliformAlligatorellus, and evidence for allopatric speciation driving high diversity in western European atoposaurids". PeerJ. 2: e599. doi:10.7717/peerj.599. ISSN 2167-8359. PMC 4179893. PMID 25279270.

[2] Tennant, Jonathan P.; Mannion, Philip D.; Upchurch, Paul (2016). "Evolutionary relationships and systematics of Atoposauridae (Crocodylomorpha: Neosuchia): implications for the rise of Eusuchia" (PDF). Zoological Journal of the Linnean Society. 177 (4): 854–936. doi:10.1111/zoj.12400. ISSN 1096-3642.

[BS88-3] Buscalioni, A. D.; Sanz, J. L. (1988). "Phylogenetic relationships of the Atoposauridae". Historical Biology. 1 (3): 233–250. doi:10.1080/08912968809386477.