Table 1.

Cellular composition of Artiodactyla brains.

	Sus scrofa domesticus	Antidorcas marsupialis	Damaliscus dorcas phillipsi	Tragelaphus stripceros	Giraffa camelopardalis
MBD, kg	∼100	25	60	218	470
MBR, g	57.758	102.102	155.066	308.522	528.026
MCXT, g	35.780	62.814	109.044	212.004	389.616
MHP, g	1.928	3.434	n.a.	10.936	7.486
MCB, g	8.128	11.458	13.402	31.776	67.730
MRoB, g	13.850	27.830	32.620	64.742	70.680
MD + BG, g	6.728	13.814	n.a.	30.418	33.322
MMES, g	2.338	5.304	n.a.	15.928	15.928
MP + M, g	4.784	8.312	n.a.	18.396	21.430
MOB, g	0.822	1.200	n.a.	5.546	2.052
NBR	2.22 × 109	3.06 × 109	3.90 × 109	6.09 × 109	11.21 × 109
NCXT	292.96 × 106	375.49 × 106	548.58 × 106	793.07 × 106	1.67 × 109
NGM	207.75 × 106	293.77 × 106	361.95 × 106	615.87 × 106	1.33 × 109
NHP	12.91 × 106	20.48 × 106	n.a.	28.36 × 106	58.59 × 106
NCB	1.86 × 109	2.26 × 109	2.40 × 109	4.04 × 109	8.88 × 109
NRoB	58.71 × 106	70.48 × 106	92.24 × 106	106.28 × 106	150.65 × 106
ND+BG	34.40 × 106	40.12 × 106	n.a.	58.88 × 106	34.32 × 106
NMES	12.43 × 106	7.52 × 106	n.a.	26.07 × 106	26.63 × 106
NP + M	11.88 × 106	22.84 × 106	n.a.	21.64 × 106	47.44 × 106
NOB	9.20 × 106	16.00 × 106	58.71 × 106	38.33 × 106	24.68 × 106
DNCXT	8,118	5,978	5,031	3,741	4,283
DNGM	7,375	7,051	5,142	4,798	5,882
DNHP	6,695	5,965	n.a.	2,594	7,826
DNCB	228,632	196,999	179,206	127,218	131,080
DNRoB	4,238	2,532	2,828	1,642	2,131
DND + BG	5,113	2,904	n.a.	1,936	1,030
DNMES	5,317	1,418	n.a.	1,637	1,672
DNP + M	2,483	2,748	n.a.	1,176	2,214
DNOB	11,187	13,332	n.a.	6,912	12,026
O/NBR	2.076	3.251	3.989	2.481	3.252
O/NCXT	10.361	10.834	11.956	14.625	15.949
O/NGM	8.544	7.239	8.356	8.443	7.764
O/NHP	10.334	10.111	n.a.	17.868	10.628
O/NCB	0.188	0.207	0.184	0.313	0.622
O/NRoB	18.682	18.710	24.842	32.076	32.333
O/ND + BG	17.779	19.408	n.a.	31.841	38.841
O/NMES	15.667	30.250	n.a.	30.546	41.017
O/NP + M	24.452	13.706	n.a.	34.088	23.631
O/NOB	8.434	6.576	n.a.	8.523	9.417

Cellular composition of the five artiodactyl species. M, mass of body (M_BD) or brain structure; N, number of neurons; DN, neuronal density (in neurons/mg); O/N, ratio between numbers of other (non-neuronal) cells and neurons. BR, whole brain (excluding the olfactory bulb); CXT, whole cerebral cortex (gray matter, white matter, and hippocampus); HP, hippocampus; CB, cerebellum; RoB, rest of brain (the sum of diencephalon + basal ganglia, mesencephalon, and pons + medulla); D + BG, diencephalon + basal ganglia; MES, mesencephalon; P + M, pons + medulla; OB, olfactory bulb. All values refer to the two hemispheres together.