A Redescription of the Snake Calamodontophis paucidens

Bailey, Joseph R.

doi:10.2307/1441425

Cited by 11 publications

(5 citation statements)

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“…dorsatus , Ta. ocellata , and by extension also A. orestes , mostly those regarding colour, defensive behaviour, and diet (Bailey, 1966b; Pagini & Lema, 1987; Harvey & Muñoz, 2004; Franco et al, 2006). These snakes are specialists in preying on soft‐bodied invertebrates (“goo‐eaters”) (Gallardo, 1972; Cechin, 1989; Bizerra et al, 2005; Franco et al, 2006), although not confirmed for A. orestes ; and, consequently, they share one or a set of common features associated to a specialized diet, such as a maxillary anterior diastema, reduction on the number of dentary teeth, pronounced enlarged rear fang, fewer maxillary teeth, and maxillary bone reduction (Taub, 1966; Laporta‐Ferreira et al, 1988; Sazima, 1989; Oliveira et al, 2008).…”

Section: Discussionmentioning

confidence: 99%

“…The tribe has been characterized as a monophyletic assemblage of rear‐fanged, viviparous snakes, with a distinctive dark postocular stripe, and a general cryptic colouration pattern (Bailey, 1966a; Franco et al, 2017; Zaher et al, 2009). Its traditional morphology‐based definition (Bailey, 1966b, 1967; Ferrarezzi, 1994) have been corroborated by recent molecular studies, supporting the monophyletic status of the tribe, and its placement in the subfamily Xenodontinae (Grazziotin et al, 2012; Vidal et al, 2010; Zaher et al, 2009; Zaher et al, 2018).…”

Section: Introductionmentioning

confidence: 87%

“…The general similar morphotype shown by Thamnodynastes and Tachymenis contrasts with the striking presence of unique morphological traits in Calamodontophis , Tomodon , Gomesophis , and Ptychophis (Amaral, 1935; Bailey, 1966b; Cechin, 1989; Franco et al, 2006; Pagini & Lema, 1987). This morphological disparity mirrors the distinct biological patterns exhibited by the group: the generalist species present a common generalized morphotype, while the specialists have extremely derived morphological traits (e.g., very long fangs, number of teeth and maxillary reduction, dislocated eyes and nostrils position, etc.)…”

Section: Introductionmentioning

confidence: 89%

“…This morphological disparity mirrors the distinct biological patterns exhibited by the group: the generalist species present a common generalized morphotype, while the specialists have extremely derived morphological traits (e.g., very long fangs, number of teeth and maxillary reduction, dislocated eyes and nostrils position, etc.) (Bailey, 1966b; Bizerra et al, 2005; Gonzalez et al, 2014; Harvey & Muñoz, 2004).…”

Section: Introductionmentioning

confidence: 99%

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The systematics of Tachymenini (Serpentes, Dipsadidae): An updated classification based on molecular and morphological evidence

et al. 2022

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Despite the recent advances in the systematics of snakes, the diversity of several Neotropical groups of species remains poorly understood. The lack of studies focused on the phylogenetic relationship within most of the 20 tribes of Dipsadidae precludes a better understanding of the evolution of this diverse family. Here, we present a comprehensive phylogenetic analysis of Tachymenini, a heterogeneous tribe that comprises 36 viviparous species of dipsadids, grouped in seven genera based on morphological similarities. The tribe is widely distributed throughout South America presenting very distinctive phenotypes, habitats, and behaviours. The phylogenetic relationship among tachymenins is a well‐recognized challenge regarding the systematics of the South American dipsadids. The similar morphotype of some generalist species, combined with the very derived morphology of some strict specialists, creates a complexity of traits that has prevented the comprehension of the systematics of the group. To address such a challenge, we combine molecular (six loci) and morphological (70 characters) datasets in an integrative phylogenetic approach. The resultant phylogenetic trees indicate, with strong support, that three of the seven current recognized genera (Tachymenis, Tomodon, and Thamnodynastes) are non‐monophyletic and, consequently, we propose a new systematic arrangement for Tachymenini. We revalidate two genera, Dryophylax and Mesotes, and we describe three additional monotypic genera, Apographon gen. n., Tachymenoides gen. n., and Zonateres gen. n. to accommodate Tomodon orestes, Tachymenis affinis, and Thamnodynastes lanei, respectively. We also include Tomodon ocellatus and Pseudotomodon trigonatus in Tachymenis and describe a new genus, Galvarinus gen. n., to accommodate the Tachymenis chilensis species group. Furthermore, we also provide an evolutionary scenario for the speciation events based on a time‐calibrated tree, commenting on the diversification and origin of the tribe, and on the probable existence of undescribed species of Mesotes and Dryophylax.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 87%

Section: Introductionmentioning

confidence: 89%

Section: Introductionmentioning

confidence: 99%

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The systematics of Tachymenini (Serpentes, Dipsadidae): An updated classification based on molecular and morphological evidence

et al. 2022

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“…Posteriormente, Bailey (1966a) reavaliou a descrição de Amaral (1935), fornecendo a seguinte diagnose corrigida e ampliada: 7+2 dentes maxilares, seis dentes palatinos e 10 pterigóideos; 135 ventrais; escama cloacal dividida; 32 subcaudais; sete supralabiais (3ª e 4ª em contato com olho); nasal inteira; escamas dorsais lisas com 15 fileiras contínuas e uma fosseta apical. Pagini & Lema (1987) encontraram o segundo exemplar da espécie e corrigiram e complementaram, por sua vez, o trabalho de Bailey (1966a). Estes autores identificaram também uma característica importante, a coloração escura (preta) da mucosa oral e cloacal (Pagini & Lema, 1987;Franco et al, 2006).…”

Section: Calamodontophisunclassified

Sistemática da tribo Tachymenini Bailey, 1967 (Serpentes, Dipsadidae, Xenodontinae)

Trevine¹

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MacromolecularN‐nitroso‐acylamines as initiators for polyreactions. I. Synthesis of block copolymers from polycondensates and olefinic monomers,

Craubner

1980

J. Polym. Sci. Polym. Chem. Ed.

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The synthesis of block copolymers in three‐step reactions from linear polycondensates (e.g., nylon 6. nylon 6,6, nylon 6,10 and polyurethane) and olefinic monomers (e.g., styrene, acrylic acid and acrylonitrile, methyl methacrylate, vinyl acetate, vinyl chloride, and isoprene) is reported. Macromolecular radicals are formed by the thermal decomposition of partly nitrosated peptide group containing polycondensates at elevated temperatures (60–200°C). These polyradicals initiate the copolymerization of the olefinic monomers. The conversion and reaction rates were generally high (up to 100% within a few hours). Most of the block copolymers prepared were soluble in organic solvents. Some, however, were insoluble or rubberlike. The reaction mechanism involved are analyzed. Applications are discussed.

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A Redescription of the Snake Calamodontophis paucidens

Cited by 11 publications

References 0 publications

The systematics of Tachymenini (Serpentes, Dipsadidae): An updated classification based on molecular and morphological evidence

The systematics of Tachymenini (Serpentes, Dipsadidae): An updated classification based on molecular and morphological evidence

Sistemática da tribo Tachymenini Bailey, 1967 (Serpentes, Dipsadidae, Xenodontinae)

MacromolecularN‐nitroso‐acylamines as initiators for polyreactions. I. Synthesis of block copolymers from polycondensates and olefinic monomers,

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