Template:Bat timeline table1

Embryonic Bat Stages *Carollia perspicillata*^[1]
Stage	Key features	Somites	Age (dpc)	Uterus diameter (mm)	Crown-rump length (mm)	Mass (mg)
12	Forelimb buds form; tail bud forms; caudal neuropore closes; 3 pharyngeal arches.	21-29	40	5.75 (+/- 0.64)	3.4 (+/- 0.42)	4.3 (+/- 1.7)
14	Retinal pigment; nasal pits; end of somitogenesis; propatagium and plagiopatagium primordia; hindlimb AER.	36-40	44	6.95 (+/- 0.44)	5.35 (+/- 0.24)	24.6 (+/- 3.6)
15	Hand plate and footplate form; lens vesicle; auditory hillocks; premaxillary centers.		46	8.65 (+/- 1.20)	7.45 (+/- 0.92)	56 (+/- 13)
16	Nose-leaf primordium; pinna and tragus form; forelimb digital condensations, uropatagium primordium.		50	12.06 (+/- 1.45)	8.66 (+/- 1.05)	110 (+/- 30)
17	Tongue protruding; cervical flexure straightens; hindlimb interdigit tissue receding; eyes begin to close.		54	13.45 (+/- 1.34)	9.15 (+/- 1.34)	114 (+/- 45)
18	Free thumb; head and body smoother, rounder; eyes half-closed; postaxial flexure at wrist; calcar.		60	16.32 (+/- 0.98)	12.35 (+/- 1.16)	278 (+/- 83)
20	Distal forelimbs overlap over face; head larger; eyelids cover pigmented retina; claw primordia form.		70	20.0 (+/- 3.54)	16.35 (+/- 1.06)	617 (+/- 156)
22	Prominent, triangular nose-leaf; eyelids reopening; wing membranes corrugated; claws pigmented, hooked.		80	23.03 (+/- 2.68)	20.02 (+/- 0.26)	1527 (+/- 208)
24	Fetal period commences; eyes completely open; face and nose-leaf pigmenting.		90	23.53 (+/- 0.64)	21.13 (+/- 0.06)	2097 (+/- 199)
Values are mean n= 2-6, +/- standard deviation, original table contains more detailed data.

↑ Cretekos CJ, Weatherbee SD, Chen CH, Badwaik NK, Niswander L, Behringer RR & Rasweiler JJ. (2005). Embryonic staging system for the short-tailed fruit bat, Carollia perspicillata, a model organism for the mammalian order Chiroptera, based upon timed pregnancies in captive-bred animals. Dev. Dyn. , 233, 721-38. PMID: 15861401 DOI.