| Anatomy (SEE ALSO: Brain and Nervous System; Circulatory System; Digestive System; Embryology; Endocrinology; Growth Rates; Histology; Myology; Pathology; Respiratory System; Skeleton; Urogenital System; and under species) | 
				
				
				
				
					
					|  | x |  |  | 1891 | Flower & Lydekker (gen. acc.; 212-214.) |  | 
				
				
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					| Captivity, Sirenians in (SEE ALSO: Hunting and Capture; Weed Control) | 
				
				
				
				
					
					|  | x |  |  | 1891 | Flower & Lydekker (Trichechus; Brighton; m216, 218.) |  | 
				
				
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					| Crassitherium Van Beneden, 1871 (= Halitherium, in part; ?Reptilia, in part) | 
				
				
				
				
					
					|  | x |  |  | 1891 | Flower & Lydekker (m223.) |  | 
				
				
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					| Desmostylus Marsh, 1888 | 
				
				
				
				
					
					|  | x | D |  | 1891 | Flower & Lydekker ("Desmotylus"; in Halicoridae; m223.) |  | 
				
				
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					| Dioplotherium Cope, 1883 | 
				
				
				
				
					
					|  | x |  |  | 1891 | Flower & Lydekker (considered incertae sedis; 223.) |  | 
				
				
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					| Economic Uses (SEE ALSO: Archeological Sites, Sirenia at; Hunting and Capture; Medicinal Applications; Religious, Superstitious, or Ornamental Use or Observance; Weed Control) | 
				
				
				
				
					
					|  | x |  |  | 1891 | Flower & Lydekker (DD; Australia; oil; 221.) |  | 
				
				
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					| Eotherium aegyptiacum Owen, 1875 (= Eotheroides aegyptiacum) | 
				
				
				
				
					
					|  | x |  |  | 1891 | Flower & Lydekker ("E. egyptiacum"; morphology; 224.) |  | 
				
				
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					| Felsinotherium Capellini, 1872 (= Metaxytherium) | 
				
				
				
				
					
					|  | x |  |  | 1891 | Flower & Lydekker (syn. of Halitherium; 223.) |  | 
				
				
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					| Food (SEE ALSO: Behavior, Ingestive; Captivity, Sirenians in; Digestive System; Food Plants; Weed Control) (NOTE: Plants reported as part of the captive but not the natural diet of sirs. will not necessarily be found under Food Plants. Papers referring to them are, however, indexed here.) | 
				
				
				
				
					
					|  | x |  |  | 1891 | Flower & Lydekker (Trichechus; in capt., Brighton; 218.) |  | 
				
				
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					| Halicore Illiger, 1811 (= Dugong) | 
				
				
				
				
					
					|  | x |  |  | 1891 | Flower & Lydekker (anatomy, 213-214, 220-221; m223.) |  | 
				
				
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					| Halicore australis (Retzius, 1794) Owen, 1847 (= Dugong dugon) | 
				
				
				
				
					
					|  | x |  |  | 1891 | Flower & Lydekker (econ. use; 221.) |  | 
				
				
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					| Halicore dugong (Gmelin, 1788) Illiger, 1811 (= Dugong dugon) | 
				
				
				
				
					
					|  | x |  |  | 1891 | Flower & Lydekker (m221.) |  | 
				
				
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					| Halicore tabernaculi Rüppell, 1834 (= Dugong dugon) | 
				
				
				
				
					
					|  | x |  |  | 1891 | Flower & Lydekker (m221.) |  | 
				
				
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					| Halicoridae Gray, 1825 (family; = Dugongidae) | 
				
				
				
				
					
					|  | x |  |  | 1891 | Flower & Lydekker (in classification, m220; m223.) |  | 
				
				
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					| Halitheriidae Gill, 1872 (family; = Halitheriinae) | 
				
				
				
				
					
					|  | x |  |  | 1891 | Flower & Lydekker (m222.) |  | 
				
				
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					| Halitherium Kaup, 1838 | 
				
				
				
				
					
					|  | x |  |  | 1891 | Flower & Lydekker (anatomy; 213, 222-224.) |  | 
				
				
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					| Halitherium fossile (Holl, 1829) Gervais, 1847 (= Metaxytherium medium) | 
				
				
				
				
					
					|  | x |  |  | 1891 | Flower & Lydekker (teeth illustrated; 223.) |  | 
				
				
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					| Manatidae Gray, 1821 (family; = Trichechidae) | 
				
				
				
				
					
					|  | x |  |  | 1891 | Flower & Lydekker (in classification; m215.) |  | 
				
				
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					| Manatus Brünnich, 1771 (= Trichechus) | 
				
				
				
				
					
					|  | x |  |  | 1891 | Flower & Lydekker (anatomy; 213, 215-220, 224.) |  | 
				
				
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					| Manatus americanus (Link, 1795) Illiger, 1815 (= Trichechus manatus; also used by many authors for T. inunguis) | 
				
				
				
				
					
					|  | x |  |  | 1891 | Flower & Lydekker (anatomy; 216, 219-220.) |  | 
				
				
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					| Manatus australis Retzius, 1794 (= Trichechus manatus, in part; Trichechus senegalensis, in part; also used by many authors for T. inunguis) | 
				
				
				
				
					
					|  | x |  |  | 1891 | Flower & Lydekker (syn. of M. americanus; m220.) |  | 
				
				
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					| Manatus inunguis Natterer in von Pelzeln, 1883 (= Trichechus inunguis) | 
				
				
				
				
					
					|  | x |  |  | 1891 | Flower & Lydekker (m220.) |  | 
				
				
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					| Manatus latirostris Harlan, 1824 (= Trichechus manatus) | 
				
				
				
				
					
					|  | x |  |  | 1891 | Flower & Lydekker (syn. of M. americanus; m220.) |  | 
				
				
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					| Manatus senegalensis Desmarest, 1817 (homonym of Trichechus senegalensis Link, 1795) | 
				
				
				
				
					
					|  | x |  |  | 1891 | Flower & Lydekker (anatomy; 217, 220.) |  | 
				
				
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					| Miosiren Dollo, 1889 | 
				
				
				
				
					
					|  | x |  |  | 1891 | Flower & Lydekker (teeth; 223.) |  | 
				
				
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					| Pachyacanthus Brandt, 1873 (Cetacea) | 
				
				
				
				
					
					|  | x |  |  | 1891 | Flower & Lydekker (m224.) |  | 
				
				
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					| Prohalicore Flot, 1887 | 
				
				
				
				
					
					|  | x |  |  | 1891 | Flower & Lydekker (m223.) |  | 
				
				
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					| Prorastomidae Cope, 1889 (family) | 
				
				
				
				
					
					|  | x |  |  | 1891 | Flower & Lydekker ("Prorastomatidae", unjustified emendation; m224.) |  | 
				
				
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					| Prorastomus sirenoides Owen, 1855 | 
				
				
				
				
					
					|  | x |  |  | 1891 | Flower & Lydekker (anatomy; 224.) |  | 
				
				
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					| Rytina Illiger, 1811 (= Hydrodamalis. Spelled Rhytina by Berthold, 1827, and most later authors; this is an unjustified emendation.) | 
				
				
				
				
					
					|  | x |  |  | 1891 | Flower & Lydekker (anatomy; 213, 221-222.) |  | 
				
				
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					| Rytina stelleri (Retzius, 1794) Desmarest, 1819 (= Hydrodamalis gigas) | 
				
				
				
				
					
					|  | x |  |  | 1891 | Flower & Lydekker ("Rhytina"; m214, 221-222.) |  | 
				
				
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					| Rytiodus Lartet, 1866 (Spelled Rhytiodus by Delfortrie, 1872, and many later authors; this is an unjustified emendation.) | 
				
				
				
				
					
					|  | x |  |  | 1891 | Flower & Lydekker (anatomy; 223-224.) |  | 
				
				
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					| Sound Production | 
				
				
				
				
					
					|  | x |  |  | 1891 | Flower & Lydekker (Trichechus; in capt.; no sounds produced; 219.) |  | 
				
				
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					| Trachytherium Gervais, 1849 (= Halitherium) | 
				
				
				
				
					
					|  | x |  |  | 1891 | Flower & Lydekker (?syn. of Rytiodus; m224.) |  | 
				
				
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					| Trichechus Linnaeus, 1758 | 
				
				
				
				
					
					|  | x |  |  | 1891 | Flower & Lydekker (synonymy; m215.) |  | 
				
				
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					| Prorastomatidae Flower & Lydekker, 1891 (family; = Prorastomidae) | 
				
				
				
				
					
					|  | x |  | * | 1891 | Flower & Lydekker (unjustified emendation of Prorastomidae; 224.) |  | 
				
				
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