scholarly journals A new species of basal rhynchosaur (Diapsida: Archosauromorpha) from the early Middle Triassic of South Africa, and the early evolution of Rhynchosauria

2015 ◽  
Vol 174 (3) ◽  
pp. 571-588 ◽  
Author(s):  
Richard J. Butler ◽  
Martín D. Ezcurra ◽  
Felipe C. Montefeltro ◽  
Adun Samathi ◽  
Gabriela Sobral
2016 ◽  
Vol 177 (4) ◽  
pp. 1030-1030
Author(s):  
Richard J. Butler ◽  
Martín D. Ezcurra ◽  
Felipe C. Montefeltro ◽  
Adun Samathi ◽  
Gabriela Sobral

PeerJ ◽  
2021 ◽  
Vol 9 ◽  
pp. e12225
Author(s):  
Guang-Hui Xu

The previously alleged ‘perleidid’ genus Peltoperleidus is a stem-neopterygian fish taxon with two or three horizontal rows of notably deepened flank scales. Until recently, members of this genus were known only from the Ladinian (late Middle Triassic) or near the Anisian/Ladinian boundary (~242 Ma) in southern Switzerland and northern Italy. Here, I report the discovery of a new species of the genus, Peltoperleidus asiaticus sp. nov., based on three well-preserved specimens from the Anisian (early Middle Triassic, ~244 Ma) of Luoping, eastern Yunnan, China. The discovery extends the geological range of Peltoperleidus by approximately two million years and documents the first record of the genus in Asia. Similar to its relatives (represented by P. macrodontus) from Europe, P. asiaticus sp. nov. is likely a small-sized durophagous predator with dentition combining grasping and crushing morphologies. Results of a cladistic analysis unite four species of Peltoperleidus as a monophyletic group within the Louwoichthyiformes, and suggest that the presence of two horizontal rows of notably deepened scales was independently evolved in Peltoperleidus and another stem-neopterygian taxon Altisolepis. P. asiaticus sp. nov. is nested at the base of Peltoperleidus, and a new family Peltoperleididae is proposed for the genus, contrasting the previous placement of Peltoperleidus in the poorly defined, paraphyletic ‘Perleididae’. Comparative studies of the basal peltoperleidid from China with its younger relatives from Europe provide new insights into the evolutionary origin and paleogeographic distribution of this clade.


1902 ◽  
Vol 69 (451-458) ◽  
pp. 496-496

I have received from South Africa specimens of blood taken from cattle which contain a new species of Trypanosoma. This new species can be at once distinguished from the Trypanosomas of Surra, Tse-tse Fly Disease, or Rat by its larger size, it being almost twice as large as any of the others. In general appearance it conforms closely to the others in possessing an oval protoplasmic body, a longitudinal fin-like membrane, and a single flagellum.


Zootaxa ◽  
2013 ◽  
Vol 3630 (1) ◽  
pp. 155-164 ◽  
Author(s):  
NAOMI R. DELVENTHAL ◽  
RANDALL D. MOOI

Callogobius winterbottomi new species is described from the 33.8 mm SL holotype and two paratypes (32.2 mm SL and 22.9 mm SL) from the Comoros, Western Indian Ocean. It is distinguished from all other known Callogobius species by the following combination of characters: sensory pores absent, 23–26 scales in lateral series, and sensory papillae pre-opercular row not continuous with transverse opercular row. One additional specimen of Callogobius winterbottomi was located from South Africa. A new standardized naming system for Callogobius sensory papillae rows is presented for identification and clarification of character states among Callogobius species. The new species is tentatively placed among what we term the “sclateri group”, a clade including C. sclateri (Steindachner) and three other species that exhibit a modified female urogenital papilla with lateral distal flaps and elongate ctenii on the caudal peduncle scales. Callogobius tutuilae (Jordan & Seale) is removed from synonymy with C. sclateri because it has partially united pelvic fins (vs separate) and the preopercular sensory papillae row is continuous with the transverse opercular row (vs separate).


1993 ◽  
Vol 97 (6) ◽  
pp. 709-716 ◽  
Author(s):  
Michael J. Wingfield ◽  
P. Schalk Van Wyk

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