Prehistoric Models: Worms

What many people call “worms” could be the larval stage of some insect species. True worms are diverse and are classified in many different phylum and class groupings. The “earth worms” we all know and love are classified in the Phylum Annelid along with leeches. The most common worm fossils are “worm tubes” and imprints.

To see my worm fossils click here. To see my moderm worm tube specimen click here.

Domain: Eukarya – Kingdom: Animalia – Subkingdom: Eumetazoa – Clade: ParaHoxozoa – Clade: Bilateria – Clade: Nephrozoa – (unranked): Protostomia – (unranked): Spiralia – Superphylum: Lophotrochozoa – Phylum: Annelida

(Annelida meaning “little ring”, ringed worms, or segmented worms)

Early Ordovician to Holocene

Genus: Lumbricus terrestris “Common Earthworm”

Classification: Phylum: Annelida – Class: Clitellata – Order: Opisthopora- Suborder: Lumbricina

Diet: Herbivore (Sediment Feeder)

Period: Holocene, Recend

Life Span: Up to 6 years

Size: Up to 14 imches

Domain: Eukarya – Kingdom: Animalia – Subkingdom: Eumetazoa – Clade: ParaHoxozoa – Clade: Bilateria – Clade: Nephrozoa – (unranked): Protostomia – Superphylum: Ecdysozoa – Clade: Scalidophora – Phylum: Priapulida

(penis worms)

Late Pennsylvanian to Holocene (Stem-group from Cambrian)

Genus and Species: Ottoia prolifica

Classification: Phylum: Priapulida – Family: Ottoiidae

Described by: Walcott, 1911

Period: Middle Cambrian 505 million years ago

Locality: Burgess Shale of Brittish Columbia

Size: 8 cm

Genus and Species: Ottoia prolifica

Classification: Phylum: Priapulida – Family: Ottoiidae

Described by: Walcott, 1911

Period: Middle Cambrian 505 million years ago

Locality: Burgess Shale of Brittish Columbia

Size: 8 cm

Domain: Eukarya – Kingdom: Animalia – Subkingdom: Eumetazoa – Clade: ParaHoxozoa – Clade: Bilateria – Clade: Nephrozoa – (unranked): Protostomia – Superphylum: Ecdysozoa – (unranked): Panarthropoda – Scalidophora – Phylum: “Lobopodia”

(“lobopodia” meaning “blunt feet”)

Cambrian to Pennsylvanian (Euarthropoda to Holocene)

Genus: Hallucigenia

Classification: Phylum: “Lobopodia” – Clade: Hallucishaniids – Family: Hallucigeniidae

Described by: Walcott, 1911

Period: Middle Cambrian 505 million years ago

Locality: Burgess Shale type deposits

Size: 0.5 to 5.5 cm

Genus: Hallucigenia

Classification: Phylum: “Lobopodia” – Clade: Hallucishaniids – Family: Hallucigeniidae

Described by: Walcott, 1911

Period: Middle Cambrian 505 million years ago

Locality: Burgess Shale type deposits

Size: 0.5 to 5.5 cm

Genus: Aysheaia 

Classification: Phylum: “Lobopodia” – Class: Xenusia – Order: Protonychophora – Family: Aysheaiidae

Described by: Walcott, 1911

Period: Middle Cambrian 505 million years ago

Locality: Cambrian Burgess shale of British Columbia

Size: 1 to 6 cm

The video below is from my YouTube Jurassic James 65:

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