| Palmettaspis | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | † Trilobita |
| Order: | † Olenellida |
| Genus: | † Palmettaspis Fritz, 1995 |
Palmettaspis is an extinct genus of trilobite in the order Olenellida. There are at least two described species in Palmettaspis. [1] [2]
These two species belong to the genus Palmettaspis:
Coronaviruses are a group of related viruses that cause diseases in mammals and birds. In humans, coronaviruses cause respiratory tract infections that can be mild, such as some cases of the common cold, and others that can be lethal, such as SARS, MERS, and COVID-19. Symptoms in other species vary: in chickens, they cause an upper respiratory tract disease, while in cows and pigs they cause diarrhea. There are yet to be vaccines or antiviral drugs to prevent or treat human coronavirus infections.
Emys is a small genus of turtles in the family Emydidae. The genus is endemic to Europe and North America.
Box turtles are North American turtles of the genus Terrapene. Although box turtles are superficially similar to tortoises in terrestrial habits and overall appearance, they are actually members of the American pond turtle family (Emydidae). The twelve taxa which are distinguished in the genus are distributed over four species. They are largely characterized by having a domed shell which is hinged at the bottom, allowing the animal to retract its head and legs and close its shell tightly to protect itself from predators.
Macrochelys is a genus of very large freshwater turtles in the family Chelydridae from Southeastern United States. Only a single extant species was recognized until a 2014 study divided it into several species.
Lissemys is a genus of turtles of the family Trionychidae. The genus is endemic to southern Asia. Indian Flapshell are widespread more common in South Asia.
Pelochelys is a genus of giant softshell turtles in the family Trionychidae.
Pelusios is a genus of African side-necked turtles. With 17 described species, it is one of the most diverse genera of the turtle order (Testudines).
Cyclanorbis is a genus of softshell turtles in the family Trionychidae. The genus is endemic to Africa.
Cycloderma is a genus of softshell turtles in the family Trionychidae. The genus is endemic to Africa.
The Burmese peacock softshell turtle is a species of softshell turtle in the Trionychidae family. It is one of five species in the genus Nilssonia.
The painted terrapin, painted batagur, or saw-jawed turtle is a species of turtles in the family Geoemydidae. It was formerly in its own genus, Callagur, but has been reclassified to the genus, Batagur.
The Namoi River snapping turtle, also commonly known as Bell's turtle, the Namoi River elseya, or Bell's saw-shelled turtle, is a species of turtle in the family Chelidae. The species is endemic to New South Wales, Australia.
The big-headed turtle is a species of turtle in the family Platysternidae from Southeast Asia and southern China.
The spider tortoise is a species of tortoise in the family Testudinidae.
Siebenrockiella is a small genus of black marsh turtles. It used to be monotypic but now has two species with the addition of the Philippine forest turtle. The genus was originally erected in 1869 by John Edward Gray under the name Bellia, commemorating Thomas Bell, but this name is a junior homonym of Bellia Milne-Edwards, 1848, a crustacean genus. The replacement name, Siebenrockiella, was published in 1929 by Wassili Adolfovitch Lindholm, and commemorates Friedrich Siebenrock.
Nevadella is an extinct genus of trilobites, fossil marine arthropods, with species of average size. It lived during the late Atdabanian stage, which lasted from 530 to 524 million years ago during the early part of the Cambrian Period.
Cyclemys is a genus of freshwater turtles, commonly referred to as Asian leaf turtles, from the family Geoemydidae. The genus occurs throughout Southeast and South Asia, and currently contains seven species.
Batagur is a genus of large turtles from South and Southeast Asia. All members of the genus are seriously threatened. With a recent merger with members from two other genera, this genus has six described species.
Macrocheles is a genus of mites in the family Macrochelidae. There are more than 100 described species in Macrocheles.
The southern giraffe, also known as two-horned giraffe, is a proposed species of giraffe native to Southern Africa. However, the IUCN currently recognizes only one species of giraffe with nine subspecies.
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