PLATE 46Trionyx muticus muticus, dorsal views.Top—Adult males; left, TU 14606 (×3/10), White River, Cotter, Marion County, Arkansas; right, KU 48237 (×1/3), 8 mi. S Hanover, Washington County, Kansas.Bottom—Females (×1/4), 2 mi. E Manhattan, in Pottawatomie County, Kansas; left, KU 48229; right, KU 48238.
PLATE 46
Trionyx muticus muticus, dorsal views.Top—Adult males; left, TU 14606 (×3/10), White River, Cotter, Marion County, Arkansas; right, KU 48237 (×1/3), 8 mi. S Hanover, Washington County, Kansas.Bottom—Females (×1/4), 2 mi. E Manhattan, in Pottawatomie County, Kansas; left, KU 48229; right, KU 48238.
PLATE 47Trionyx muticus calvatus, dorsal views.Top—Juvenile, TU 17303 (× 12/5), Pearl River, Varnado, Washington Parish, Louisiana.Bottom—Left, adult male, KU 47118 (×3/10), Pearl River within 4 mi. of Monticello, Lawrence County, Mississippi; right, adult female, TU 17306 (×2/9), Pearl River, 9 mi. S Monticello, Lawrence County, Mississippi.
PLATE 47
Trionyx muticus calvatus, dorsal views.Top—Juvenile, TU 17303 (× 12/5), Pearl River, Varnado, Washington Parish, Louisiana.Bottom—Left, adult male, KU 47118 (×3/10), Pearl River within 4 mi. of Monticello, Lawrence County, Mississippi; right, adult female, TU 17306 (×2/9), Pearl River, 9 mi. S Monticello, Lawrence County, Mississippi.
PLATE 48Fig. 1.Habitat ofT. s. pallidus, Little River, 6.5 mi. S Broken Bow, McCurtain County, Oklahoma, September 7, 1953.Fig. 2.Habitat ofT. s. emoryi, Río Mesquites, 2 mi. W Nadadores, Coahuila, México, July 27, 1959. Twoemoryiwere trapped in hoop nets set in quiet water to left of what is believed to be a muskrat house.
PLATE 48
Fig. 1.Habitat ofT. s. pallidus, Little River, 6.5 mi. S Broken Bow, McCurtain County, Oklahoma, September 7, 1953.
Fig. 2.Habitat ofT. s. emoryi, Río Mesquites, 2 mi. W Nadadores, Coahuila, México, July 27, 1959. Twoemoryiwere trapped in hoop nets set in quiet water to left of what is believed to be a muskrat house.
PLATE 49Fig. 1.General habitat ofT. s. pallidusandT. m. muticus, Lake Texoma, in a period of low water, 2 mi. E Willis, Marshall County, Oklahoma, February 24, 1951.Fig. 2.Type locality ofT. ater, Tío Candido, 16 km. S Cuatro Ciénegas, Coahuila, México, July 30, 1959. An adult male ofT. s. emoryiwas also netted here.
PLATE 49
Fig. 1.General habitat ofT. s. pallidusandT. m. muticus, Lake Texoma, in a period of low water, 2 mi. E Willis, Marshall County, Oklahoma, February 24, 1951.
Fig. 2.Type locality ofT. ater, Tío Candido, 16 km. S Cuatro Ciénegas, Coahuila, México, July 30, 1959. An adult male ofT. s. emoryiwas also netted here.
PLATE 50Fig. 1.General habitat ofT. s. asperandT. m. calvatus, Escambia River, 2 mi. E,1/2mi. N Century, Escambia County, Florida, June 1, 1954. Three nests ofcalvatusfound on sand bar in foreground.Fig. 2.Nest site ofT. m. calvatus(excavated by investigator) on open sand bar shown above in Fig. 1, June 1, 1954. Note tracks of turtle in foreground leading toward and away from disturbed area at left.
PLATE 50
Fig. 1.General habitat ofT. s. asperandT. m. calvatus, Escambia River, 2 mi. E,1/2mi. N Century, Escambia County, Florida, June 1, 1954. Three nests ofcalvatusfound on sand bar in foreground.
Fig. 2.Nest site ofT. m. calvatus(excavated by investigator) on open sand bar shown above in Fig. 1, June 1, 1954. Note tracks of turtle in foreground leading toward and away from disturbed area at left.
PLATE 51Fig. 1.Eggs ofT. m. calvatus in situ, June 1, 1954, approximately six inches below surface, from nest shown inFig. 2, Pl. 50. Note sandy substrate and seemingly irregular arrangement of eggs.Fig. 2.Eggs ofT. m. calvatus in situ, June 1, 1954; nest located at brim of incline shown in foreground ofFig. 1, Pl. 50. Note gravelly substrate (in foreground) and symmetrical arrangement of eggs.
PLATE 51
Fig. 1.Eggs ofT. m. calvatus in situ, June 1, 1954, approximately six inches below surface, from nest shown inFig. 2, Pl. 50. Note sandy substrate and seemingly irregular arrangement of eggs.
Fig. 2.Eggs ofT. m. calvatus in situ, June 1, 1954; nest located at brim of incline shown in foreground ofFig. 1, Pl. 50. Note gravelly substrate (in foreground) and symmetrical arrangement of eggs.
PLATE 52Lectotype ofTrionyx spiniferLesueur, Museum d'Histoire Naturelle, Paris, No. 8808 (×1/5); obtained by C. A. Lesueur from the Wabash River, New Harmony, Posey County, Indiana.Top—Dorsal view.Bottom—Ventral view.
PLATE 52
Lectotype ofTrionyx spiniferLesueur, Museum d'Histoire Naturelle, Paris, No. 8808 (×1/5); obtained by C. A. Lesueur from the Wabash River, New Harmony, Posey County, Indiana.Top—Dorsal view.Bottom—Ventral view.
PLATE 53Lectotype ofTrionyx muticusLesueur, Museum d'Histoire Naturelle, Paris, No. 8813 (×1/2); obtained by C. A. Lesueur from the Wabash River, New Harmony, Posey County, Indiana.Top—Dorsal view.Bottom—Ventral view.
PLATE 53
Lectotype ofTrionyx muticusLesueur, Museum d'Histoire Naturelle, Paris, No. 8813 (×1/2); obtained by C. A. Lesueur from the Wabash River, New Harmony, Posey County, Indiana.Top—Dorsal view.Bottom—Ventral view.
PLATE 54Skull of holotype ofPlatypeltis agassiziBaur (=T. s. asper), MCZ 37172 (× 1), Savannah River, Georgia.Top—Dorsal view.Bottom—Ventral view.
PLATE 54
Skull of holotype ofPlatypeltis agassiziBaur (=T. s. asper), MCZ 37172 (× 1), Savannah River, Georgia.Top—Dorsal view.Bottom—Ventral view.
28-7818
UNIVERSITY OF KANSAS PUBLICATIONSMUSEUM OF NATURAL HISTORY
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Transcriber's NotesAll obvious typographical error were corrected. Due to variant usage of hyphens, "soft-shelled" and "crystal-clear" were used as the standard for variants of those terms. All other variant spellings of "softshell(s)" and where variant spellings occur in quoted text or literature titles they were retained. Variants in accented and non-accented words may exist. Paragraphs split by tables or illustrations were rejoined.For those using screen readers, here is a text version of graphic onpage 586.Pliocene Pleistocene Recent==========================================================================+--F-----------------------------------F (ferox)|| +---------Mm (muticus muticus)| +--M------------------+| | +---------Mc (muticus calvatus)| |FMSA-+ | +--Ss (spinifer spinifer)| | +------+| | | +--Sh (spinifer hartwegi)| | +--Ssha-++--MSA-+ | || | +---------Sa (spinifer asper)| || +--S---+ +--Sp (spinifer pallidus)| | | +--Spg-+| | | | +--Sg (spinifer guadalupensis)+--SA--+ +--Sepg-+| || +--Se-----Se (spinifer emoryi)|+--A---------------------A (ater)--------------------------------------------------------------------------Typographical CorrectionsPageCorrection494OrdinanceSchool Proving Ground → Ordnance494Pl.12, top → Pl. 42, top567Pl.52, Fig. 2 → Pl. 51, Fig. 2576Agkistrodonpiscivorous→piscivorus595Carettochlydae→ Carettochelyidae
Transcriber's Notes
All obvious typographical error were corrected. Due to variant usage of hyphens, "soft-shelled" and "crystal-clear" were used as the standard for variants of those terms. All other variant spellings of "softshell(s)" and where variant spellings occur in quoted text or literature titles they were retained. Variants in accented and non-accented words may exist. Paragraphs split by tables or illustrations were rejoined.
For those using screen readers, here is a text version of graphic onpage 586.
Pliocene Pleistocene Recent==========================================================================+--F-----------------------------------F (ferox)|| +---------Mm (muticus muticus)| +--M------------------+| | +---------Mc (muticus calvatus)| |FMSA-+ | +--Ss (spinifer spinifer)| | +------+| | | +--Sh (spinifer hartwegi)| | +--Ssha-++--MSA-+ | || | +---------Sa (spinifer asper)| || +--S---+ +--Sp (spinifer pallidus)| | | +--Spg-+| | | | +--Sg (spinifer guadalupensis)+--SA--+ +--Sepg-+| || +--Se-----Se (spinifer emoryi)|+--A---------------------A (ater)--------------------------------------------------------------------------
Typographical Corrections