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| Definitions of the following characters are given here. |
| Species: Lithobates sierramadrensis | |
| Genus: Lithobates |
| Family: Ranidae |
| Species in Frost database: Lithobates sierramadrensis |
| ID information: KX423512.1 / smf99711 |
| NCBI name: Rana sierramadrensis |
| Ecomorphological guild (s): benthic |
| Collector: G. Köhler |
| Country: Mexico |
| Locality 1: Oaxaca |
| Locality 2: Rio Sal, 3 km N San Gabriel Mixtepec |
| Coordinate 1: 16° 5.992' N |
| Coordinate 2: 97° 3.961' W |
| Aquatic habitat: lotic |
| Gosner stage: 35 |
| Total length: 74.659 mm |
| Body length: 25.864 mm |
| Tail length: 48.795 mm |
| Maximum body heigth: 13.67 mm |
| Maximum body width: 16.251 mm |
| Snout-nostril-distance: 2.962 mm |
| Snout-spiraculum-distance: 15.134 mm |
| Eye diameter: 4.076 mm |
| Internostrial distance: 5.331 mm |
| Interorbital distance: 8.806 mm |
| Maximum height of tail: 14.907 mm |
| Maximum heigth of dorsal fin: 5.093 mm |
| Maximum heigth of ventral fin: 3.526 mm |
| Maximum height of tail muscle: 10.165 mm |
| Maximum width of tail muscle: 9.321 mm |
| Oral disc width: 6.611 mm |
| Position of oral disc: ventral |
| Disc emarginated: no |
| LKRF: 6(2-6)/3(1) |
| Anterior keradont rows: 6 |
| Posterior keradont rows: 3 |
| Anterior gaps: yes |
| Anterior rows with gaps: 5 |
| Posterior gaps: yes |
| Posterior rows with gaps: 1 |
| Relative length of anterior rows: 1>2>3>4>5>6 |
| Relative length of posterior rows: 1>2>3 |
| Anterior papillae: 1 |
| Posterior papillae: 1-2 |
| MPRF: (1)/2-3/1-2 |
| Shape of marginal papillae: conical |
| Submarginal papillae: yes |
| Jaw sheaths present: yes |
| Jaw sheaths serrated: finely |
| Upper jaw sheath shape: moderately arched |
| Lower jaw sheath shape: broadly v |
| Thickness of jaw sheaths: massive |
| Nostrils present: yes |
| Position of nostrils: anterolateral |
| Direction of nostrils: anterolaterally |
| Shape of nostrils: round |
| Nostrils with structure: half torus |
| Position of eyes: dorsolaterally |
| Direction of eyes: dorsolaterally |
| Position of spiracle: -1 |
| Shape of spiracle: slight ridge |
| Position of vent tube: medial b |
| Shape of vent tube: displaced dorsally |
| Attachment of vent tube to ventral fin: b |
| Lateral line system visible: no |
| Position of lateral line system: absent |
| Relative heigth of fins: d>v |
| Dorsal fin reaches onto body: no |
| Margin of ventral fin: a |
| Margin of dorsal fin: a |
| Tail tip: triangular |
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