92 results found

Search Results for: reptiles

Amphibians & Early Reptiles

Amphibia Definition (Science: zoology) Amphibia is one of the classes of vertebrates. The amphibia are distinguished by... Read More

Why Is The Mary River Turtle Endangered

The Mary River Turtle  (Elusor macrurus) has been named recently as one of the species on the brink of extinction. That is... Read More

Mammalian Ancestors

Humans are mammals, the most successful taxonomic class of organisms to colonize the Earth. The word mammal derives from the... Read More

Parthenogenesis

To reproduce, by definition, means to produce new offspring. The process is referred to as reproduction, which is one of the... Read More

Reptiles

reptile 1. (Science: zoology) An animal that crawls, or moves on its belly, as snakes, or by means of small, short legs, as... Read More

SENI Biometric Analysis on the extinct Scincidae species: Macroscincus coctei (underlined)

Brian L. Schnirel Leeway Corucia Research Center (LCRC) Courtesy: Polyphemos (2004)   Introduction: It has been... Read More

Chordata

Chordata Definition What is Chordata? Chordata is the phylum of the animal kingdom that includes a large number of animal... Read More

Animal

Animal Definition An animal (plural: animals) refers to any of the eukaryotic multicellular organisms of the biological... Read More

Substrate

Substrate Definition What is a "substrate"? The underlying substances or layers are termed as substrate. The definitions of... Read More

Allantois

Definition noun, plural: allantoises or allantoides An embryonic diverticulum of the hindgut of reptiles, birds, and... Read More

Life

Life Definition noun, plural: lives (1) A distinctive characteristic of a living organism from dead organism or non-living... Read More

Amnion

Definition noun, plural: amnions The innermost membrane of the extraembryonic or the fetal membranes of amniotes surrounding... Read More

Asexual reproduction

Asexual Reproduction Definition What is asexual reproduction? Asexual reproduction is a mode of reproduction that does not... Read More

Northern Africa and biodiversity

Northern Africa and biodiversity Content Partner: United Nations Environment Programme (other articles) Article Topics:... Read More

Amniote

Definition noun, plural: amniotes Any of the tetrapod vertebrates belonging to Amniota in which an amnion is formed during... Read More

Crocodilia

Definition noun (taxonomy) A taxonomic order that includes the crocodilian species Supplement The order Crocodilia is... Read More

Paraphyletic

Definition adjective A biological taxonomy that pertains to a certain group of organisms does include some but not all of... Read More

Anamniote

Definition noun, plural: anamniotes Any of the vertebrates that do not belong to the Amniota, and in which an amnion does... Read More

Crocodile

Definition noun, plural: crocodiles Any of the amphibious reptile species of the subfamily Crocodylinae Supplement The... Read More

Herpetology

Definition noun The branch of zoology that deals with reptiles and amphibians Supplement Herpetology is a sub-discipline of... Read More

Sphenodon guntheri

Definition The tuatara species of the genus Sphenodon that inhabits one small island of New Zealand, i.e. Brothers... Read More

Chromatophore

Definition noun, plural: chromatophores A pigment-containing cell or light-reflecting structure, especially found in fish,... Read More

The Dinosaurs

Everyone has heard about the dinosaurs. No doubt one of the reasons why is because of their size, another being the fact... Read More

Molecular Basis of Temperature-Dependent Gender of Red-Eared Slider Turtle

Imagine a child inside a womb with a sex yet to be decided not by the pair of sex chromosomes but by the ambient temperature... Read More

Fragmentation

Fragmentation Definition What is fragmentation? In general, fragmentation refers to the state or the process of breaking... Read More

Melatonin

Definition noun, plural: melatonin or melatonins The hormone involved in the regulation of several physiological mechanisms... Read More

Thorax

thorax 1. (Science: anatomy) The part of the trunk between the neck and the abdomen, containing that part of the body cavity... Read More

New Zealand’s Unique Fauna

By: Maria Victoria Gonzaga In the previous lesson, we learned about the high biodiversity of New Zealand and how... Read More

Gamete

Definition of Gamete What is a gamete? A gamete is the mature reproductive or sex cell that contains a haploid number of... Read More

Aves

Aves Definition What are birds classified as? Birds constitute the class Aves of the kingdom Animalia. How to define Aves?... Read More

Pinealocyte

Definition noun, plural: pinealocytes The major cell type component of the pineal gland, and is involved in the production... Read More

Amniotic sac

Definition noun, plural: amniotic sacs Fluid-filled sac where the embryo or fetus is suspended in the uterus or in the of... Read More

Pigment

pigment 1. Any material from which a dye, a paint, or the like, may be prepared; particularly, the refined and purified... Read More

Flatworm

Definition noun, plural: flatworms Any of the worms (e.g. tapeworms, trematodes, planarians, etc.) belonging to the phylum... Read More

Ecosystem

Ecosystem Definition An ecosystem is a system consisting of biotic and abiotic components that function together as a unit.... Read More

Agnathan

Definition noun, plural: agnathans Any of the jawless fish species belonging to the taxonomic superclass Agnatha of the... Read More

Invertebrate zoology

Definition noun A sub-discipline of zoology that particularly deals with the invertebrates Supplement Invertebrate zoology... Read More

Skin

Definition noun, plural: skins (anatomy) The external membranous integument of the body; the outer protective covering of... Read More

Superclass

Definition noun, plural: superclasses (taxonomy) A taxon rank subordinate to a phylum (or a subphylum) and superior to a... Read More

Tuatara

Definition noun, plural: tuatara or tuataras A nocturnal lizard-like reptile of the genus Sphenodon that is native to New... Read More