Rhamphodontia

## Taxonomy

Polypodia

Sarcopodia

Neopoda

Osteopoda

Polyschia

Platydontia

Edaphotheria

Eurycheiridae

Lystrocheiridae

Trypanocheiridae

**Rhamphodontia**

## Immediate subtaxa

Eurhamphodontia

Oryctocheiridae

**Rhamphodontia** (lit. "beak teeth") is a clade of Trypanocheiridae and one of the four classes of osteopods.

## Description

The rhamphodonts have evolved “helpers at the nest” instead of dispersing to begin their own broods once they’re sufficiently developed, the offspring stay with their mother and help her care for the next clutch of young. The juveniles also help the mother dig and maintain the burrow, occasionally unearthing roots and tubers for them to feed on.

The rhamphodonts only leave the safety of the burrow at night, and even then, they stay very close to the burrow entrance. As they forage for tylophytes and small prey, one member of the group takes on the role of sentinel to keep watch for predators because leaving the burrow and dispersing in search of new mates is very dangerous, both because of the inhospitable terrain and because of predators like the theropterans and amphidonts. To aid in this rhamphodonts are able to produce high-pitched chirping sounds to help them stay in contact and to alert each other to danger.

Regarding reproduction, only their males are semelparous. Occasionally, a mother rhamphodont’s burrow may be visited by a mature male in search of females to fertilize. If any of her young attempt to mate with the male newcomer, she’ll attack them and possibly exile them from the burrow. if the mother dies, the most dominant of her offspring will take over the burrow (undergoing protandry if they’re male).

One clade of rhamphodonts evolved eusociality and phenotypic plastic reproduction, becoming the Oryctocheiridae.

Rhamphodonts are notable for being one of the few clades of Osteopod to survive the mass extinction event, later diversifying into the vast majority of megafauna on TIRA 292b.

## Navigation

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												* File:StenopsidaeEvo.pngArchestenopsidae
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* **Chemophyta**
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										+ Aphyllophyta
									* Zygophyta
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											- Zygodendrales
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						* Pagophyta
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					- Archexylophytacaea
					- Coelophyta
				+ Nodophyta
			* Altiphyta†
				+ *Trilobophyllus axidenti*†

 † = Extinct