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Synapsids

A. Cladistics

Comparsions between humans and synapsids are tough because the synapsid reptiles had long muzzles like modern dogs 1. Humans have a face that is pushed in without a muzzle E. Amniote Egg 1.

Mesozoic Geology Beginning of the Modern World

The Amniotes Classified based on skull structure Diapsids (Includes lizards, dinosaurs & birds)) Synapsids (Includes mammals) Anapsids (Includes turtles)

The Denucleation of the Mammalian Erythrocyte: An ...

(4) At the same time, the majority of Synapsids – the class of animals to which mammals belong – became extinct, and lost their position as the dominant terrestrial vertebrates.

Amniotes Amniote Advantages

Pro to-mammals: Therapsids •In the Permian, a group of Synapsids appear that are ancestors of all modern mammals • Therapsids •Were very reptile-like, with sprawling gates and scaly skin •Had canine tusks and incisor teeth, some had muzzles with possible whiskers •Some groups may have had hair ...

The Mesozoic I Geology and marine life

Rifting produced basins that filled with sediments These lacustrineenvironments preserve many terrestrial organisms, including synapsids and diapsids Newark Supergroup rocks

STUDY GUIDE VERTEBRATE EVOLUTION AND DIVERSITY CHAPTER 34

... postanal tail coelocanth cutaneous cranium vertebral column (vertebrae) endoskeleton hinged jaws paired appendages cartilage lateral line system oviparous ovoviviparous viviparous operculum swim bladder tetrapod extraembryonic membranes scales teeth amniotic egg (amniotes) ectothermic endothermic placenta synapsids scales ...

THE ORIGIN OF MAMMALS

Eardrum - malleus - incus - stapes - inner ear A Brief Overview on Ear-Jaw Evolution among Mammals The oldest reptiles having mammal-like features, the synapsids, occur in rocks of Pennsylvanian age formed about 305 mya.

When the Ice was green and growing

Paleo From page 1 See Paleo on page 7 Looking bback ~ 750 million years ago Antarctica and North America connected. ~500 million years ago Antarctica is at the Earth's equator. ~245 million years ago Synapsids, an evolutionary link between reptiles and mammals, coexist in Antarctica with giant amphibians, some ...

DISCOVERY: WHALES IN TRANSITION STUDENT HANDOUT

All evidence to date places the emergence of all mammals from a group of terrestrial pre-dinosaur tetrapods, called synapsids, about 200 million years ago.

Phylum Hemicordata (Cambrian-recent)

... Cambrian-modern) Subphylum Vertebrata (Cambrian?, Ordovician-modern) Agnathids/Ostracoderms (Cambrian?, Ordovician-modern) Gnathostomes (Late Silurian-recent) Amphibians (Devonian-modern) Amniotes (eCarb.-modern) anapsids (Permian-modern) euryapsids (Triassic-Creatcaeous) diapsids (Carb- modern) synapsids ...