blue

IMG_4791, a photo by ∞intimation∞ on Flickr.

Diefenbunker CBC Broadcast Room

Diefenbunker CBC Broadcast Room, a photo by ciao-chow on Flickr.

snails

snails, a set on Flickr.

Mollusca

Mollusca

Soft

Mollusks / molluscs

Muscular foot and mantle round shell

112,000[8]

 

Tardigrades

 

 

Tardigrades are one of the neatest examples of life on Earth.  There are many lifelong enthusiasts of these microscopic magesteria… Tardigrades are the new dinosaurs.

Here is the Genome http://www.ncbi.nlm.nih.gov/nuccore/317134319?report=graph

Arthropoda Jointed foot Arthropods Chitin exoskeleton 1,134,000+

Arthropoda

Jointed foot

Arthropods

Chitin exoskeleton

1,134,000+

Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Subkingdom:	Eumetazoa
Superphylum:	Ecdysozoa
Phylum:	Arthropoda Latreille, 1829
Subphyla and Classes
Subphylum Trilobitomorpha Trilobita – trilobites (extinct) Subphylum Chelicerata Arachnida – spiders, scorpions, etc. Xiphosura – horseshoe crabs, etc. Pycnogonida – sea spiders Eurypterida – sea scorpions (extinct) Subphylum Myriapoda Chilopoda – centipedes Diplopoda – millipedes Pauropoda Symphyla Subphylum Crustacea Branchiopoda – brine shrimp etc. Remipedia Cephalocarida – horseshoe shrimp Maxillopoda – barnacles, fish lice, etc. Ostracoda – seed shrimp Malacostraca – lobsters, crabs, shrimp, etc. Subphylum Hexapoda Insecta – insects Entognatha

Annelida

 

Annelida

Little ring

Segmented worms

Multiple circular segment

16,300 extant approx

This is a subject of but small importance; and I know not whether it will interest any readers, but it has interested me.
December 30, 2010 12:20 AM    Subscribe

Pileated Woodpecker (Dryocopus pileatus)

Pileated Woodpecker, a set on Flickr.

Acanthocephala

1. Historical account

• A.  Acanthocephala not noticed until beginning of the 18th century, not distinguished until Koelreuther (1771) proposes the name Acanthocephala.
• B.  Muller (1776) unaware,of Koelreuther’s work calls them Echinorhynchus.
• C.  Rudolphi (1809) formally gives them the name Acanthocephala.
• D.  Many species were described in the 19th century and all were placed under one generic name- Echinorhynchus.
• E.  Position of Acanthocephala was very uncertain; placed among flatworms, roundworms, chaetognatha, and finally lumped into the Aschelminthes.
• F.  Hyman removes Acanthocephala from the Aschelminthes making them into a separate phylum.

Earth and Life

Phylum	Meaning	Common name	Distinguishing characteristic	Species described
Acanthocephala	Thorny headed worms	Thorny-headed worms	Reversible spiny proboscis	756 approx.
Acoelomorpha	Without gut	Acoels	No mouth or alimentary canal (alimentary canal = digestive tract in digestive system)
Annelida	Little ring	Segmented worms	Multiple circular segment	16,300 extant approx.
Arthropoda	Jointed foot	Arthropods	Chitin exoskeleton	1,134,000+
Brachiopoda	Arm foot	Lamp shells	Lophophore and pedicle	300-500 extant
Bryozoa	Moss animals	Moss animals, sea mats	Lophophore, no pedicle, ciliated tentacles	5,000 extant
Chaetognatha	Longhair jaw	Arrow worms	Chitinous spines either side of head, fins	100 extant approx.
Chordata	Cord	Chordates	Hollow dorsal nerve cord, notochord, pharyngeal slits, endostyle, post-anal tail	100,000+ approx.
Cnidaria	Stinging nettle	Coelenterates	Nematocysts (stinging cells)	11,000 approx.
Ctenophora	Comb bearer	Comb jellies	Eight “comb rows” of fused cilia	100 extant approx.
Cycliophora	Wheel carrying	Symbion	Circular mouth surrounded by small cilia	3+
Echinodermata	Spiny skin	Echinoderms	Fivefold radial symmetry in living forms, mesodermal calcified spines	7,000 extant approx.; 13,000 extinct approx.
Echiura	Spine tail	Spoon worms	Set of hooks at posterior end	140 approx.
Entoprocta	Inside anus	Goblet worm	Anus inside ring of cilia	150 approx.
Gastrotricha	Hair stomach	Meiofauna	Two terminal adhesive tubes	690 approx.
Gnathostomulida	Jaw orifice	Jaw worms		100 approx.
Hemichordata	Half cord	Acorn worms, pterobranchs	Stomochord in collar, pharyngeal slits	100 extant approx.
Kinorhyncha	Motion snout	Mud dragons	Eleven segments, each with a dorsal plate	150 approx.
Loricifera	Corset bearer	Brush heads	Umbrella-like scales at each end	122 approx.
Micrognathozoa	Tiny jaw animals	—	Accordion like extensible thorax	1
Mollusca	Soft	Mollusks / molluscs	Muscular foot and mantle round shell	112,000[8]
Nematoda	Thread like	Round worms	Round cross section, keratin cuticle	80,000–1,000,000
Nematomorpha	Thread form	Horsehair worms		320 approx.
Nemertea	A sea nymph	Ribbon worms		1,200 approx.
Onychophora	Claw bearer	Velvet worms	Legs tipped by chitinous claws	200 extant approx.
Orthonectida	Straight swim		Single layer of ciliated cells surrounding a mass of sex cells	20 approx.
Phoronida	Zeus’s mistress	Horseshoe worms	U-shaped gut	20
Placozoa	Plate animals			1
Platyhelminthes	Flat worms	Flat worms		25,000 approx.[9]
Porifera*	Pore bearer	Sponges	Perforated interior wall	5,000+ extant
Priapulida	Little Priapus			16
Rhombozoa	Lozenge animal	—	Single axial cell surrounded by ciliated cells	75
Rotifera	Wheel bearer	Rotifers	Anterior crown of cilia	2,000 approx.
Sipuncula	Small tube	Peanut worms	Mouth surrounded by invertible tentacles	144–320
Tardigrada	Slow step	Water bears	Four segmented body and head	1,000+
Xenoturbellida	Strange flatworm	—	Ciliated deuterostome	2
Total: 36				2,000,000-

	Protostome	Bilateria
	Deuterostome
	Basal/disputed
	Other

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