Table 3 Comparison of the Chelydra serpentina genome to other reptile genomes

Species	Common Name	Sequencing Technology	Coverage	Genome size (Gb)	Contig N50 (kb)	Number of Contigs	Scaffold N50 (kb)	Number of Scaffolds	Ref.
Chelydra serpentina	Snapping Turtle	Illumina, PacBio, Nanopore	126X	2.26	872.1	52,731	5590	13,224
Chrysemys picta	Painted Turtle	Sanger, Illumina	18X	2.59	21.3	262,326	5212	78,631	1
Terrapene mexicana	Mexican Box Turtle	Illumina, 10X Genomics	69X	2.57	76.6	106,051	24249	52,260	NCBI
Pelodiscus sinensis	Chinese Softshell Turtle	Illumina	106X	2.21	21.9	265,137	3331	76,151	2
Chelonia mydas	Green Sea Turtle	Illumina	82X	2.24	20.4	561,968	3778	352,958	2
Gopherus agassizii	Desert Tortoise	Illumina	147X	2.4	42.7	106,825	251	42,911	3
Platysternon megacephalum	Big-headed turtle	Illumina	208.9X	2.32	41.8	470,184	7220	360,291	4
Anolis carolinensis	Green anole lizard	Sanger	7.1X	1.8	79.9	41,986	4033	6,645	5
Pogona vitticeps	Australian dragon lizard	Illumina	86X	1.77	31.2	636,524	2291	543,500	6
Gecko japonicus	Japanese gecko	Illumina	131X	2.49	29.6	335,470	708	191,500	7
Eublepharis macularius	Leopard gecko	Illumina	136X	2.02	20		664		8
Shinisaurus crocodilus	Chinese crocodile lizard	Illumina	149X	2.24	11.7		1470		9
Alligator sinensis	Chinese alligator	Illumina	109X	2.27	23.4	177,282	2188	9,317	10
Alligator mississipiensis	American alligator	Illumina	68X	2.17	36	114,159	509	14,645	11
Crocodylus porusus	Saltwater crocodile	Illumina	74X	2.12	32.7	112,407	204	23,365	11
Gavialis gangeticus	Gharial	Illumina	109X	2.88	23.4	177,282	2188	9,317	11

1) Shaffer et al. 2013, 2) Wang et al. 2013, 3) Tollis et al. 2017, 4) Cao et al. 2019, 5) Alföldi et al. 2011, 6) Georges et al. 2015, 7) Liu et al. 2015, 8) Xiong et al. 2016, 9) Gao et al. 2017, 10) Wan et al. 2013, 11) Green et al. 2014.